Ngu\u1ed3n \u0111i\u1ec7n song song: Ba c\u00e1ch an to\u00e0n \u0111\u1ec3 k\u1ebft h\u1ee3p hai ngu\u1ed3n \u0111i\u1ec7n nh\u1eb1m t\u0103ng d\u00f2ng \u0111i\u1ec7n ho\u1eb7c \u0111\u1ea3m b\u1ea3o d\u1ef1 ph\u00f2ng<\/title>\n<\/head>\n<body>\n\n<div class=\"bd-post\">\n <style>\n \/* fonts: BLOG scope only \u2014 \u54c1\u724c Standard Blog CSS Header \u9010\u5b57\u7167\u6284 *\/\n @import url('https:\/\/fonts.googleapis.com\/css2?family=Manrope:wght@400;600;700&family=Roboto:wght@600;700&display=swap');\n\n .bd-post {\n font-family: \"Manrope\", sans-serif;\n font-size: 16px;\n font-weight: 400;\n line-height: 1.6;\n color: var(--text-primary);\n background: var(--body-bg);\n box-sizing: border-box;\n max-width: 100%;\n padding: 40px;\n \/* \u54c1\u724c header system palette\uff08\u9010\u5b57\u7167\u6284\uff09+ \u672c\u7bc7 plan \u89d2\u8272 token\uff08hex \u552f\u4e00\u6765\u6e90 = design-plan.md\uff09*\/\n --text-primary: #333333;\n --heading-ink: #000000;\n --text-secondary: #6E6E6E;\n --accent: #479DE2;\n --accent-deep: #2A76B4;\n --accent-hot: #FD9649;\n --body-bg: #FFFFFF;\n --inverse-bg: #1E1E1E;\n --inverse-text: #FFFFFF;\n --inverse-secondary: #B8B8B8;\n --card-fill: #FFFFFF;\n --card-border: #E0E0E0;\n --navy-bg: #0D3972;\n --navy-text: #FFFFFF;\n --navy-secondary: #C9D6E8;\n --btn-white: #FFFFFF;\n --btn-ink: #1E1E1E;\n \/* \u4e09\u5173\u7cfb\u5916\u8ddd token + \u4e24\u6863\u5185\u8ddd\uff08fixed standard\uff09 *\/\n --gap-attach: 16px;\n --gap-normal: 32px;\n --gap-section: 48px;\n --pad-compact: 16px;\n --pad-standard: 24px;\n \/* \u5355\u680f *\/\n --prose-width: 720px;\n }\n .bd-post a { overflow-wrap: anywhere; word-break: break-word; }\n .bd-post p, .bd-post li { overflow-wrap: break-word; }\n \/* \u951a\u70b9\u8bb8\u53ef\u8868\uff1a\u89c6\u89c9\u5c5e\u6027\u53ea\u5141\u8bb8 p a \/ li a \/ blockquote a \/ td a *\/\n .bd-post p a, .bd-post li a, .bd-post blockquote a, .bd-post td a { color: var(--accent-deep); text-decoration: underline; text-underline-offset: 3px; }\n .bd-post .bd-post-article { max-width: var(--prose-width); margin: 0 auto; }\n\n \/* \u6807\u9898\uff08\u54c1\u724c header LAW\uff09*\/\n .bd-post h2 { font-family: \"Roboto\", sans-serif; font-weight: 700; font-size: 34px; line-height: 1.2; color: var(--heading-ink); margin: 48px 0 16px; transform-origin: left; }\n .bd-post h3 { font-family: \"Roboto\", sans-serif; font-weight: 700; font-size: 24px; line-height: 1.25; color: var(--heading-ink); margin: 32px 0 12px; }\n\n \/* PROSE SPACING \u2014 fixed standard *\/\n .bd-post p { margin: 0 0 1em; }\n .bd-post ul, .bd-post ol { margin: 0 0 1em; padding-left: 1.5em; }\n .bd-post li { margin-bottom: 0.5em; }\n .bd-post strong { font-weight: 700; }\n\n \/* box-sizing \u5141\u8bb8 catch-all\uff1bbox-model \u4e00\u5f8b\u5177\u4f53\u7c7b *\/\n .bd-post [class*=\"bp-\"], .bd-post [class*=\"rich-\"] { box-sizing: border-box; }\n\n \/* ============ BP-1 \u56db\u8def\u5224\u5b9a\u56fe\uff08navy \u7b7e\u540d\u5757 \/ \u8bb0\u5fc6\u94a9\u5b50\uff09 ============ *\/\n .bd-post .bp-b1-judge {\n background: var(--navy-bg);\n border-radius: 10px;\n padding: var(--pad-standard);\n display: grid;\n grid-template-columns: repeat(4, 1fr);\n column-gap: 24px;\n row-gap: 16px;\n margin: var(--gap-section) 0;\n }\n .bd-post .bp-b1-lane { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; min-width: 0; }\n .bd-post .bp-b1-lane-dead { outline: 1px dashed var(--accent-hot); outline-offset: 6px; border-radius: 10px; padding: 4px 8px 8px; }\n .bd-post .bp-b1-chip {\n width: 44px; height: 44px; border-radius: 50%;\n display: flex; align-items: center; justify-content: center; flex: 0 0 auto;\n }\n .bd-post .bp-b1-chip-live { background: var(--btn-white); }\n .bd-post .bp-b1-chip-live svg { color: var(--accent-deep); width: 20px; height: 20px; }\n .bd-post .bp-b1-chip-dead { background: var(--accent-hot); }\n .bd-post .bp-b1-chip-dead svg { color: var(--btn-ink); width: 20px; height: 20px; }\n .bd-post .bp-b1-lane-title { color: var(--navy-text); font-size: 15px; font-weight: 700; line-height: 1.35; }\n .bd-post .bp-b1-lane-dead .bp-b1-lane-title { text-decoration: line-through; }\n .bd-post .bp-b1-lane-sub { color: var(--navy-secondary); font-size: 13px; line-height: 1.45; }\n\n \/* ============ BP-2 \u5197\u4f59\u7b97\u672f\u5361 ============ *\/\n .bd-post .bp-b2-ratio {\n background: var(--card-fill);\n border: 1px solid var(--card-border);\n border-radius: 10px;\n padding: var(--pad-standard);\n display: grid;\n grid-template-columns: repeat(2, minmax(0, 1fr));\n column-gap: 24px;\n row-gap: 16px;\n margin: var(--gap-normal) 0;\n }\n .bd-post .bp-b2-col { display: flex; flex-direction: column; gap: 8px; min-width: 0; }\n .bd-post .bp-b2-head { color: var(--text-secondary); font-size: 13px; font-weight: 700; }\n .bd-post .bp-b2-row { display: flex; gap: 8px; align-items: baseline; }\n .bd-post .bp-b2-num { color: var(--accent-deep); font-weight: 700; font-size: 14.5px; flex: 0 0 auto; }\n .bd-post .bp-b2-desc { color: var(--text-primary); font-size: 14.5px; line-height: 1.5; }\n\n \/* ============ BP-3 L0 \u5f15\u8bed\u5757 ============ *\/\n .bd-post .bp-b3-pin {\n margin: var(--gap-normal) 0;\n padding: 0 0 0 20px;\n border-left: 4px solid var(--accent-deep);\n color: var(--heading-ink);\n font-size: 20px;\n line-height: 1.45;\n font-weight: 600;\n }\n\n \/* ============ BP-cta-end\uff08\u9875\u811a\u6df1\u9762\u677f\u8f6c\u5316\uff09 ============ *\/\n .bd-post .bp-cta-end {\n background: var(--inverse-bg);\n border-radius: 10px;\n padding: var(--pad-standard);\n display: flex;\n flex-direction: column;\n align-items: center;\n gap: 14px;\n text-align: center;\n margin: var(--gap-section) 0;\n }\n .bd-post .bp-cta-end-title {\n font-family: \"Roboto\", sans-serif;\n color: var(--inverse-text);\n font-size: 24px;\n font-weight: 700;\n line-height: 1.25;\n margin: 0;\n }\n .bd-post .bp-cta-end-icon { display: inline-flex; vertical-align: -0.2em; margin-right: 10px; }\n .bd-post .bp-cta-end-icon svg { color: var(--accent); width: 24px; height: 24px; }\n .bd-post .bp-cta-end-sub { color: var(--inverse-secondary); font-size: 15px; line-height: 1.55; max-width: 560px; margin: 0; }\n .bd-post .bp-cta-end-btn {\n display: inline-block;\n background: var(--accent-hot);\n color: var(--btn-ink);\n font-weight: 600;\n font-size: 16px;\n line-height: 1.2;\n padding: 12px 26px;\n border-radius: 8px;\n text-decoration: none;\n transition: background .2s ease-out, color .2s ease-out, transform .2s ease-out;\n }\n .bd-post .bp-cta-end-btn:hover {\n background: var(--btn-white);\n color: var(--accent-deep);\n transform: translateY(-2px);\n }\n\n \/* ============ RICH \u6e32\u67d3 ============ *\/\n \/* Callout-Single Warning\uff08\u4f4e tier\uff1a\u767d\u5361 + \u5168\u8fb9\u6846 + \u6df1\u84dd\u5de6\u6761 + \u5757\u7ea7\u56fe\u6807\uff09 *\/\n .bd-post .rich-callout {\n background: var(--card-fill);\n border: 1px solid var(--card-border);\n border-left: 4px solid var(--accent-deep);\n border-radius: 8px;\n padding: var(--pad-compact);\n display: flex;\n align-items: flex-start;\n gap: 12px;\n margin: var(--gap-attach) 0 var(--gap-normal);\n }\n .bd-post .rich-callout .rich-callout-icon { flex: 0 0 auto; display: flex; align-items: center; }\n .bd-post .rich-callout .rich-callout-icon svg { color: var(--accent-deep); width: 20px; height: 20px; }\n .bd-post .rich-callout .rich-callout-body { color: var(--text-primary); font-size: 15px; line-height: 1.55; margin: 0; }\n\n \/* ComparisonTable\uff08\u00a73 \u573a\u666f\u77e9\u9635\uff09 *\/\n .bd-post .table-wrapper { overflow-x: auto; margin: 0 0 1em; }\n .bd-post .rich-table { width: 100%; border-collapse: collapse; margin: 0; }\n .bd-post .rich-table-title { color: var(--heading-ink); font-family: \"Roboto\", sans-serif; font-weight: 700; font-size: 18px; line-height: 1.3; margin: 0 0 12px; }\n .bd-post .rich-table th {\n color: var(--text-primary);\n font-weight: 700;\n font-size: 15px;\n text-align: left;\n background: var(--card-fill);\n border-bottom: 2px solid var(--accent-deep);\n padding: 12px 14px;\n }\n .bd-post .rich-table td {\n color: var(--text-primary);\n font-size: 15px;\n line-height: 1.5;\n border-bottom: 1px solid var(--card-border);\n padding: 12px 14px;\n vertical-align: top;\n }\n\n \/* Card-Checklist\uff08\u00a75 \u7ec4\u5408\u6e05\u5355\uff09 *\/\n .bd-post .rich-checklist {\n background: var(--card-fill);\n border: 1px solid var(--card-border);\n border-radius: 10px;\n padding: var(--pad-standard);\n margin: var(--gap-normal) 0;\n }\n .bd-post .rich-checklist-title {\n color: var(--heading-ink);\n font-family: \"Roboto\", sans-serif;\n font-weight: 700;\n font-size: 18px;\n line-height: 1.3;\n margin: 0 0 16px;\n }\n .bd-post .rich-checklist-icon { display: inline-flex; vertical-align: -0.2em; margin-right: 8px; }\n .bd-post .rich-checklist-icon svg { color: var(--accent-deep); width: 20px; height: 20px; }\n .bd-post .rich-checklist-item { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px; }\n .bd-post .rich-checklist-item:last-child { margin-bottom: 0; }\n .bd-post .rich-checklist-check {\n flex: 0 0 auto;\n width: 20px; height: 20px;\n border: 1px solid var(--card-border);\n border-radius: 50%;\n display: flex; align-items: center; justify-content: center;\n margin-top: 1px;\n }\n .bd-post .rich-checklist-check svg { color: var(--accent-deep); width: 12px; height: 12px; }\n .bd-post .rich-checklist-text { color: var(--text-primary); font-size: 14.5px; line-height: 1.5; margin: 0; }\n\n \/* References\uff08.bd-refs \u89c4\u8303\uff1a14px \/ #6E6E6E \/ \u94fe\u63a5 #2A76B4\uff09 *\/\n .bd-post .bd-refs { font-size: 14px; color: var(--text-secondary); }\n .bd-post .bd-refs li { margin-bottom: 0.5em; }\n\n \/* ============ SANCTIONED MOTION ============ *\/\n @media (prefers-reduced-motion: no-preference) {\n .bd-post h2 { transition: color .2s ease-out, transform .2s ease-out; }\n .bd-post h2:hover { color: var(--accent-deep); transform: scale(1.02); }\n .bd-post .bp-b2-ratio { transition: transform .2s ease-out, box-shadow .2s ease-out; }\n .bd-post .bp-b2-ratio:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0,0,0,0.08); }\n @supports (animation-timeline: view()) {\n .bd-post .bd-reveal { animation: bd-fade-in linear both; animation-timeline: view(); animation-range: entry 0% entry 35%; }\n @keyframes bd-fade-in { from { opacity: 0; } to { opacity: 1; } }\n }\n }\n\n @media (max-width: 768px) {\n .bd-post { padding: 16px; }\n .bd-post h2 { font-size: 26px; margin-top: 32px; }\n .bd-post h3 { font-size: 20px; margin-top: 24px; }\n .bd-post .bp-b1-judge { grid-template-columns: 1fr; row-gap: 18px; }\n .bd-post .bp-b1-lane { flex-direction: row; align-items: center; }\n .bd-post .bp-b1-lane-dead { padding: 8px; }\n .bd-post .bp-b1-lane-text { min-width: 0; }\n .bd-post .bp-b1-chip { width: 28px; height: 28px; }\n .bd-post .bp-b1-chip svg { width: 16px; height: 16px; }\n .bd-post .bp-b2-ratio { grid-template-columns: 1fr; }\n .bd-post .bp-cta-end-title { font-size: 20px; }\n .bd-post .bp-cta-end-icon svg { width: 20px; height: 20px; }\n }\n <\/style>\n <article class=\"bd-post-article\">\n <p>C\u00f3 th\u1ec3 n\u1ed1i c\u00e1c b\u1ed9 ngu\u1ed3n song song v\u1edbi nhau kh\u00f4ng? C\u00f3, nh\u01b0ng h\u1ea7u nh\u01b0 kh\u00f4ng bao gi\u1edd theo c\u00e1ch m\u00e0 m\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng th\u1eed \u0111\u1ea7u ti\u00ean. Vi\u1ec7c n\u1ed1i c\u00e1c c\u1ef1c d\u01b0\u01a1ng c\u1ee7a hai b\u1ed9 ngu\u1ed3n th\u00f4ng th\u01b0\u1eddng v\u1edbi nhau ch\u00ednh l\u00e0 h\u00e0nh \u0111\u1ed9ng duy nh\u1ea5t c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng c\u1ea3 hai. Tuy nhi\u00ean, vi\u1ec7c k\u1ebft h\u1ee3p hai b\u1ed9 ngu\u1ed3n m\u1ed9t c\u00e1ch an to\u00e0n l\u00e0 c\u00f4ng vi\u1ec7c th\u01b0\u1eddng th\u1ea5y t\u1ea1i c\u00e1c x\u01b0\u1edfng s\u1eeda ch\u1eefa, b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t, v\u00ec v\u1eady b\u1ea1n n\u00ean n\u1eafm r\u00f5 c\u00e1c quy t\u1eafc tr\u01b0\u1edbc khi ch\u1ea1m v\u00e0o b\u1ea5t k\u1ef3 c\u1ef1c n\u1ed1i n\u00e0o.<\/p>\n\n <img decoding=\"async\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/09\/DIN-rail-supplies.webp\" style=\"width: 512px; height: 384px; max-width: 100%; object-fit: cover; border-radius: 12px; margin: 30px auto; display: block; box-shadow: 10px 10px 60px 0px rgba(210, 221, 224, 0.35); transition: all 0.3s ease; cursor: pointer;\" onmouseover=\"this.style.transform='translateY(-5px) scale(1.03)'; this.style.boxShadow='15px 25px 80px 0px rgba(210, 221, 224, 0.45)'\" onmouseout=\"this.style.transform='translateY(0) scale(1)'; this.style.boxShadow='10px 10px 60px 0px rgba(210, 221, 224, 0.35)'\"> \n\n <h2>C\u00f3 th\u1ec3 n\u1ed1i c\u00e1c b\u1ed9 ngu\u1ed3n theo ch\u1ebf \u0111\u1ed9 song song kh\u00f4ng? T\u1ea1i sao c\u00e2u tr\u1ea3 l\u1eddi hi\u1ec3n nhi\u00ean l\u1ea1i l\u00e0 \u201cKh\u00f4ng\u201d?<\/h2>\n <p>K\u1ebft n\u1ed1i c\u00e1c c\u1ef1c + v\u00e0 \u2212 c\u1ee7a hai ngu\u1ed3n \u0111i\u1ec7n m\u1ed9t chi\u1ec1u th\u00f4ng th\u01b0\u1eddng v\u1edbi m\u1ed9t t\u1ea3i, v\u00e0 ngu\u1ed3n c\u00f3 \u0111i\u1ec7n \u00e1p cao h\u01a1n s\u1ebd l\u00e0 ngu\u1ed3n ch\u00ednh. M\u1ed9t b\u1ed9 ngu\u1ed3n chuy\u1ec3n m\u1ea1ch \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p c\u1ed1 \u0111\u1ecbnh: b\u1ed9 A duy tr\u00ec 24,0 V, b\u1ed9 B duy tr\u00ec 24,2 V. B\u1ed9 B kh\u00f4ng th\u1ec3 \u0111\u1ea9y ng\u01b0\u1ee3c l\u1ea1i \u0111\u01b0\u1eddng bus m\u00e0 b\u1ed9 A \u0111ang duy tr\u00ec, do \u0111\u00f3 n\u00f3 s\u1ebd k\u00edch ho\u1ea1t c\u01a1 ch\u1ebf b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng, ho\u1eb7c t\u1ec7 h\u01a1n, h\u00fat d\u00f2ng \u0111i\u1ec7n t\u1eeb b\u1ed9 A. Hai ngu\u1ed3n \u0111i\u1ec1u ch\u1ec9nh song song \u0111\u01a1n gi\u1ea3n l\u00e0 s\u1ebd xung \u0111\u1ed9t v\u1edbi nhau: m\u1ed7i b\u1ed9 \u0111\u1ecdc gi\u00e1 tr\u1ecb tr\u00ean \u0111\u01b0\u1eddng bus, nh\u1eadn th\u1ea5y gi\u00e1 tr\u1ecb sai v\u00e0 \u0111i\u1ec1u ch\u1ec9nh theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i.<\/p>\n <p>Thi\u1ebft b\u1ecb c\u00f3 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra cao nh\u1ea5t t\u1ea5t nhi\u00ean s\u1ebd cung c\u1ea5p d\u00f2ng \u0111i\u1ec7n cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u1ebfn gi\u1edbi h\u1ea1n c\u1ee7a ch\u00ednh n\u00f3, sau \u0111\u00f3 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng, khi\u1ebfn h\u1ec7 th\u1ed1ng thi\u1ebfu h\u1ee5t d\u00f2ng \u0111i\u1ec7n c\u1ea7n thi\u1ebft (<a href=\"https:\/\/www.digikey.com\/en\/articles\/properly-configure-parallel-power-supplies\">DigiKey<\/a>, 2016). Ch\u1ec9 c\u1ea7n s\u1ef1 ch\u00eanh l\u1ec7ch v\u00e0i ch\u1ee5c miliv\u00f4n l\u00e0 \u0111\u1ee7 \u0111\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y, v\u00e0 c\u00e1c b\u00e1o c\u00e1o th\u1ef1c t\u1ebf ghi nh\u1eadn c\u00e1c tr\u01b0\u1eddng h\u1ee3p t\u1eeb vi\u1ec7c ng\u1eaft m\u1ea1ch b\u1ea3o v\u1ec7 l\u1eb7p \u0111i l\u1eb7p l\u1ea1i cho \u0111\u1ebfn h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb.<\/p>\n <p>\u1ede \u0111\u00e2y, v\u00ed d\u1ee5 v\u1ec1 pin kh\u00f4ng ph\u00f9 h\u1ee3p. M\u1ed9t t\u1ebf b\u00e0o pin \u0111\u00e3 c\u1ea1n ki\u1ec7t s\u1ebd c\u00f3 \u0111i\u1ec7n \u00e1p gi\u1ea3m xu\u1ed1ng v\u00e0 nh\u1eadn \u0111i\u1ec7n t\u00edch t\u1eeb m\u1ed9t t\u1ebf b\u00e0o pin c\u00f2n t\u1ed1t h\u01a1n; trong khi \u0111\u00f3, b\u1ed9 ngu\u1ed3n chuy\u1ec3n m\u1ea1ch l\u1ea1i ch\u1ee7 \u0111\u1ed9ng duy tr\u00ec m\u1ee9c \u0111i\u1ec7n \u00e1p c\u00e0i \u0111\u1eb7t. V\u00e0 n\u1ebfu b\u1ea1n t\u00ecm ki\u1ebfm c\u00e1c c\u00f4ng th\u1ee9c v\u1ec1 m\u1ea1ch n\u1ed1i ti\u1ebfp so v\u1edbi m\u1ea1ch song song, vi\u1ec7c n\u1ed1i song song c\u00e1c b\u1ed9 UPS, ho\u1eb7c c\u00e1c ch\u1ebf \u0111\u1ed9 k\u00eanh b\u00ean trong c\u1ee7a b\u1ed9 ngu\u1ed3n th\u00ed nghi\u1ec7m: \u0111\u00f3 l\u00e0 nh\u1eefng ch\u1ee7 \u0111\u1ec1 kh\u00e1c; b\u00e0i vi\u1ebft n\u00e0y n\u00f3i v\u1ec1 vi\u1ec7c k\u1ebft h\u1ee3p c\u00e1c \u0111\u1ea7u ra DC.<\/p>\n\n \n <div class=\"rich-callout\">\n <span class=\"rich-callout-icon\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"m21.73 18-8-14a2 2 0 0 0-3.48 0l-8 14A2 2 0 0 0 4 21h16a2 2 0 0 0 1.73-3Z\"\/><path d=\"M12 9v4\"\/><path d=\"M12 17h.01\"\/><\/svg><\/span>\n <div class=\"rich-callout-body\">Kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i song song tr\u1ef1c ti\u1ebfp hai ngu\u1ed3n \u0111i\u1ec7n th\u00f4ng th\u01b0\u1eddng (+ v\u1edbi +, \u2212 v\u1edbi \u2212) tr\u1eeb khi b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00eau r\u00f5 r\u1eb1ng m\u1eabu s\u1ea3n ph\u1ea9m \u0111\u00f3 h\u1ed7 tr\u1ee3 ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng song song. Ch\u1ec9 c\u1ea7n ch\u00eanh l\u1ec7ch \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra v\u00e0i ch\u1ee5c miliv\u00f4n l\u00e0 \u0111\u1ee7 \u0111\u1ec3 khi\u1ebfn m\u1ed9t thi\u1ebft b\u1ecb ph\u1ea3i g\u00e1nh to\u00e0n b\u1ed9 t\u1ea3i trong khi thi\u1ebft b\u1ecb c\u00f2n l\u1ea1i ng\u1eebng ho\u1ea1t \u0111\u1ed9ng \u2014 ho\u1eb7c d\u1eabn d\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c tr\u1edf l\u1ea1i thi\u1ebft b\u1ecb b\u1ecb h\u1ecfng.<\/div>\n <\/div>\n\n <p>\u0110\u1ed1i v\u1edbi ph\u1ea7n l\u1edbn \u0111\u1ed9c gi\u1ea3, c\u00e2u h\u1ecfi quan tr\u1ecdng kh\u00f4ng ph\u1ea3i l\u00e0 \u201ct\u00f4i c\u00f3 th\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c kh\u00f4ng\u201d m\u00e0 l\u00e0 \u201cc\u00e1ch n\u00e0o an to\u00e0n \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau c\u1ee7a m\u00ecnh\u201d. Hai trong ba c\u00e2u tr\u1ea3 l\u1eddi d\u01b0\u1edbi \u0111\u00e2y h\u1ea7u nh\u01b0 kh\u00f4ng t\u1ed1n k\u00e9m g\u00ec.<\/p>\n\n <h2>Ba c\u00e1ch an to\u00e0n \u0111\u1ec3 k\u1ebft n\u1ed1i song song c\u00e1c b\u1ed9 ngu\u1ed3n \u2014 v\u00e0 m\u1ed9t c\u00e1ch d\u1eabn \u0111\u1ebfn th\u1ea5t b\u1ea1i<\/h2>\n <p>Tr\u01b0\u1edbc h\u1ebft, h\u00e3y ph\u00e2n bi\u1ec7t hai m\u1ee5c ti\u00eau th\u01b0\u1eddng b\u1ecb nh\u1ea7m l\u1eabn v\u1edbi nhau. <strong>M\u1edbi h\u01a1n<\/strong> c\u00f3 ngh\u0129a l\u00e0 t\u1ea3i th\u1ef1c s\u1ef1 v\u01b0\u1ee3t qu\u00e1 kh\u1ea3 n\u0103ng cung c\u1ea5p c\u1ee7a m\u1ed9t ngu\u1ed3n v\u00e0 c\u00e1c thi\u1ebft b\u1ecb s\u1ebd chia s\u1ebb t\u1ea3i \u0111\u00f3. <strong>D\u1ef1 ph\u00f2ng<\/strong> c\u00f3 ngh\u0129a l\u00e0 t\u1ea3i c\u00f3 th\u1ec3 n\u1eb1m g\u1ecdn trong m\u1ed9t \u0111\u01a1n v\u1ecb, v\u00e0 \u0111\u01a1n v\u1ecb th\u1ee9 hai s\u1ebd \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng v\u1eabn ho\u1ea1t \u0111\u1ed9ng n\u1ebfu \u0111\u01a1n v\u1ecb \u0111\u1ea7u ti\u00ean g\u1eb7p s\u1ef1 c\u1ed1. C\u00e1c l\u1ed9 tr\u00ecnh c\u00f3 ph\u1ea7n tr\u00f9ng l\u1eb7p, nh\u01b0ng c\u00e1c l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m l\u1ea1i kh\u00e1c nhau: t\u00ednh d\u1ef1 ph\u00f2ng ch\u00ednh l\u00e0 l\u00fac vi\u1ec7c t\u00e1ch bi\u1ec7t ph\u1ea7n c\u1ee9ng ph\u00e1t huy t\u00e1c d\u1ee5ng.<\/p>\n <p><strong>Ng\u00f5 c\u1ee5t: song song c\u1ee9ng tr\u1ef1c ti\u1ebfp.<\/strong> \u0110\u00e3 \u0111\u1ec1 c\u1eadp \u1edf tr\u00ean. C\u00e1c v\u1eadt t\u01b0 m\u00e0 <em>l\u00e0<\/em> C\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ea1y song song l\u00e0 h\u1ee3p l\u1ec7; \u0111\u00f3 l\u00e0 Ph\u01b0\u01a1ng \u00e1n 3. M\u1ed9t ngu\u1ed3n c\u1ea5p th\u00f4ng th\u01b0\u1eddng kh\u00f4ng c\u00f3 h\u1ed7 tr\u1ee3 ch\u1ea1y song song \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 th\u00ec kh\u00f4ng th\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n ch\u1ec9 b\u1eb1ng c\u00e1ch c\u1ed1 g\u1eafng nhi\u1ec1u h\u01a1n.<\/p>\n <p><strong>Ph\u01b0\u01a1ng \u00e1n 1 \u2014 Chia t\u1ea3i thay v\u00ec chia d\u00f2ng \u0111i\u1ec7n.<\/strong> Khi hai thi\u1ebft b\u1ecb nh\u1ecf h\u01a1n thay th\u1ebf cho m\u1ed9t thi\u1ebft b\u1ecb l\u1edbn h\u01a1n b\u1ecb h\u1ecfng, gi\u1ea3i ph\u00e1p an to\u00e0n v\u00e0 ti\u1ebft ki\u1ec7m nh\u1ea5t th\u01b0\u1eddng l\u00e0 kh\u00f4ng n\u1ed1i song song: n\u1ed1i c\u00e1c c\u1ef1c \u00e2m l\u1ea1i v\u1edbi nhau \u0111\u1ec3 t\u1ea1o \u0111i\u1ec3m tham chi\u1ebfu chung v\u00e0 c\u1ea5p m\u1ed9t n\u1eeda t\u1ea3i t\u1eeb m\u1ed7i c\u1ef1c d\u01b0\u01a1ng. Kh\u00f4ng c\u1ea7n linh ki\u1ec7n b\u1ed5 sung, kh\u00f4ng c\u00f3 d\u00f2ng \u0111i\u1ec7n tu\u1ea7n ho\u00e0n, v\u00e0 c\u00f3 th\u1ec3 b\u1ea3o tr\u00ec b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb n\u00e0o m\u00e0 kh\u00f4ng c\u1ea7n ng\u1eaft n\u1eeda t\u1ea3i c\u00f2n l\u1ea1i. \u0110i\u1ec3m c\u1ea7n l\u01b0u \u00fd: t\u1ea3i c\u1ee7a b\u1ea1n ph\u1ea3i \u0111\u01b0\u1ee3c chia r\u00f5 r\u00e0ng th\u00e0nh, v\u00ed d\u1ee5 nh\u01b0, hai khu v\u1ef1c, hai \u0111\u1ed9ng c\u01a1 ho\u1eb7c hai nh\u00f3m thi\u1ebft b\u1ecb.<\/p>\n <p><strong>Ph\u01b0\u01a1ng \u00e1n 2 \u2014 T\u00e1ch ngu\u1ed3n ra b\u1eb1ng \u0111i-\u1ed1t.<\/strong> L\u1eafp m\u1ed9t \u0111i-\u1ed1t c\u00f4ng su\u1ea5t v\u00e0o \u0111\u01b0\u1eddng d\u00e2y + c\u1ee7a m\u1ed7i b\u1ed9 ngu\u1ed3n tr\u01b0\u1edbc thanh d\u1eabn chung, \u0111\u1ec3 d\u00f2ng \u0111i\u1ec7n ch\u1ec9 ch\u1ea3y ra kh\u1ecfi thi\u1ebft b\u1ecb, kh\u00f4ng bao gi\u1edd ch\u1ea3y ng\u01b0\u1ee3c tr\u1edf l\u1ea1i. N\u1ebfu m\u1ed9t thi\u1ebft b\u1ecb b\u1ecb h\u1ecfng v\u1edbi \u0111\u1ea7u ra b\u1ecb \u0111o\u1ea3n m\u1ea1ch, \u0111i-\u1ed1t c\u1ee7a n\u00f3 s\u1ebd ng\u0103n kh\u00f4ng cho thi\u1ebft b\u1ecb c\u00f2n ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed5 d\u00f2ng v\u00e0o \u0111i\u1ec3m s\u1ef1 c\u1ed1. N\u00ean s\u1eed d\u1ee5ng lo\u1ea1i \u0111i-\u1ed1t Schottky \u0111\u1ec3 c\u00f3 \u0111i\u1ec7n \u00e1p s\u1ee5t gi\u1ea3m thu\u1eadn th\u1ea5p h\u01a1n v\u00e0 ch\u1ecdn lo\u1ea1i c\u00f3 \u0111\u1ecbnh m\u1ee9c \u00edt nh\u1ea5t g\u1ea5p 1,5 l\u1ea7n \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n d\u1ef1 ki\u1ebfn cho m\u1ed7i thi\u1ebft b\u1ecb. S\u1ef1 s\u1ee5t \u00e1p qua c\u00e1c \u0111i-\u1ed1t kho\u1ea3ng 0,3\u20130,5 V, con s\u1ed1 n\u00e0y \u0111\u00e1ng k\u1ec3 tr\u00ean \u0111\u01b0\u1eddng ngu\u1ed3n 5 V nh\u01b0ng c\u00f3 th\u1ec3 b\u1ecf qua tr\u00ean \u0111\u01b0\u1eddng ngu\u1ed3n 24 V. C\u00e0i \u0111\u1eb7t \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra c\u1ee7a c\u1ea3 hai b\u1ed9 ngu\u1ed3n g\u1ea7n nh\u01b0 b\u1eb1ng nhau v\u00e0 d\u1ef1 ki\u1ebfn t\u1ef7 l\u1ec7 ph\u00e2n chia kh\u00f4ng \u0111\u1ec1u: t\u1ef7 l\u1ec7 chia 40:60 l\u00e0 th\u1ef1c t\u1ebf v\u00e0 ph\u00f9 h\u1ee3p cho m\u1ee5c \u0111\u00edch d\u1ef1 ph\u00f2ng, trong khi t\u1ef7 l\u1ec7 chia \u0111\u1ec1u 50:50 kh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c theo c\u00e1ch n\u00e0y (<a href=\"https:\/\/www.pulspower.com\/cam\/blog\/parallel-connection-and-redundancy-of-power-supplies-what-is-the-difference\/\">PULS<\/a>, 2022). Khi ho\u1ea1t \u0111\u1ed9ng \u1edf d\u00f2ng \u0111i\u1ec7n th\u1ef1c t\u1ebf, c\u00e1c \u0111i-\u1ed1t s\u1ebd n\u00f3ng l\u00ean. H\u00e3y l\u1eafp ch\u00fang l\u00ean b\u1ed9 t\u1ea3n nhi\u1ec7t ho\u1eb7c t\u1ea5m kim lo\u1ea1i, kh\u00f4ng n\u00ean b\u1ecdc ch\u00fang trong d\u00e2y c\u00e1p b\u1eb1ng m\u00e0ng co.<\/p>\n <p><strong>Ph\u01b0\u01a1ng \u00e1n 3 \u2014 S\u1eed d\u1ee5ng ph\u1ea7n c\u1ee9ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 chia s\u1ebb.<\/strong> C\u00e1c danh m\u1ee5c s\u1ea3n ph\u1ea9m DIN-rail c\u00f4ng nghi\u1ec7p ph\u00e2n lo\u1ea1i c\u00e1c b\u1ed9 ngu\u1ed3n th\u00e0nh c\u00e1c thi\u1ebft b\u1ecb th\u00f4ng th\u01b0\u1eddng v\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng song song. C\u00e1c m\u1eabu c\u00f3 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng song song \u0111\u01b0\u1ee3c trang b\u1ecb t\u00ednh n\u0103ng chia s\u1ebb d\u00f2ng \u0111i\u1ec7n: c\u00e1c \u0111\u1ea7u n\u1ed1i CS\/share, li\u00ean k\u1ebft chia s\u1ebb droop, ho\u1eb7c ghi r\u00f5 \u201cho\u1ea1t \u0111\u1ed9ng song song l\u00ean \u0111\u1ebfn N thi\u1ebft b\u1ecb\u201d. C\u00e1c m\u00f4-\u0111un d\u1ef1 ph\u00f2ng \u0111\u01b0\u1ee3c \u0111\u1eb7t gi\u1eefa hai ho\u1eb7c nhi\u1ec1u b\u1ed9 ngu\u1ed3n v\u00e0 \u0111\u01b0\u1eddng bus, gi\u00fap c\u00e1ch ly ch\u00fang v\u1edbi nhau v\u00e0 b\u1ed5 sung m\u1ed9t ti\u1ebfp \u0111i\u1ec3m r\u01a1le DC-OK \u0111\u1ec3 gi\u00e1m s\u00e1t; c\u00e1c m\u00f4-\u0111un DIN hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng MOSFET thay v\u00ec \u0111i-\u1ed1t \u0111\u1ec3 gi\u1ea3m nhi\u1ec7t v\u00e0 t\u1ed5n th\u1ea5t \u0111i\u1ec7n \u00e1p (d\u00f2ng s\u1ea3n ph\u1ea9m DRDN20\/40 c\u1ee7a MEAN WELL h\u1ed7 tr\u1ee3 d\u1ef1 ph\u00f2ng 1+1 v\u00e0 1+N \u1edf m\u1ee9c 20 A ho\u1eb7c 40 A v\u1edbi hai ti\u1ebfp \u0111i\u1ec3m DC-OK) (<a href=\"https:\/\/www.meanwell.com\/newsInfo.aspx?c=5&i=847\">C\u00d3 \u00dd T\u1ed0T<\/a>, 2020). Ph\u01b0\u01a1ng \u00e1n n\u00e0y t\u1ed1n chi ph\u00ed v\u00e0 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf to\u00e0n di\u1ec7n t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i; ph\u1ea7n ti\u1ebfp theo s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1ch l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng \u00e1n n\u00e0y.<\/p>\n\n \n <div class=\"bp-b1-judge bd-reveal\">\n <div class=\"bp-b1-lane bp-b1-lane-dead\">\n <span class=\"bp-b1-chip bp-b1-chip-dead\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M18 6 6 18\"\/><path d=\"m6 6 12 12\"\/><\/svg><\/span>\n <span class=\"bp-b1-lane-text\">\n <span class=\"bp-b1-lane-title\">Song song c\u1ee9ng<\/span>\n <span class=\"bp-b1-lane-sub\">Hai ng\u01b0\u1eddi ch\u01a1i b\u00ecnh th\u01b0\u1eddng, m\u1ed9t chi\u1ebfc xe bu\u00fdt \u2014 ng\u01b0\u1eddi n\u00e0o cao h\u01a1n s\u1ebd th\u1eafng cho \u0111\u1ebfn khi m\u1ed9t trong hai ng\u01b0\u1eddi b\u1ecf cu\u1ed9c.<\/span>\n <\/span>\n <\/div>\n <div class=\"bp-b1-lane\">\n <span class=\"bp-b1-chip bp-b1-chip-live\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span>\n <span class=\"bp-b1-lane-text\">\n <span class=\"bp-b1-lane-title\">Chia nh\u1ecf t\u1ea3i tr\u1ecdng<\/span>\n <span class=\"bp-b1-lane-sub\">C\u1ef1c \u00e2m chung; m\u1ed7i thi\u1ebft b\u1ecb c\u1ea5p ngu\u1ed3n cho m\u1ed9t n\u1eeda.<\/span>\n <\/span>\n <\/div>\n <div class=\"bp-b1-lane\">\n <span class=\"bp-b1-chip bp-b1-chip-live\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span>\n <span class=\"bp-b1-lane-text\">\n <span class=\"bp-b1-lane-title\">T\u00e1ch ngu\u1ed3n b\u1eb1ng \u0111i\u1ed1t<\/span>\n <span class=\"bp-b1-lane-sub\">M\u1ed7i \u0111\u01b0\u1eddng + c\u00f3 m\u1ed9t \u0111i\u1ed1t Schottky, s\u1ee5t \u00e1p 0,3\u20130,5 V.<\/span>\n <\/span>\n <\/div>\n <div class=\"bp-b1-lane\">\n <span class=\"bp-b1-chip bp-b1-chip-live\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span>\n <span class=\"bp-b1-lane-text\">\n <span class=\"bp-b1-lane-title\">C\u00e1c thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 chia s\u1ebb<\/span>\n <span class=\"bp-b1-lane-sub\">\u0110\u1ea7u cu\u1ed1i CS ho\u1eb7c t\u1ef7 l\u1ec7 gi\u1ea3m; t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt \u0111\u00e3 n\u00eau r\u00f5 nh\u01b0 v\u1eady.<\/span>\n <\/span>\n <\/div>\n <\/div>\n\n <h2>L\u1ef1a ch\u1ecdn c\u1ea5u h\u00ecnh ngu\u1ed3n \u0111i\u1ec7n d\u1ef1 ph\u00f2ng: 1+1 so v\u1edbi N+1, v\u00e0 c\u00e1ch \u0111\u1ecdc th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1ec1 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng song song<\/h2>\n <p>Khi m\u1ee5c ti\u00eau l\u00e0 \u0111\u1ea3m b\u1ea3o d\u1ef1 ph\u00f2ng, c\u00f3 hai ph\u01b0\u01a1ng \u00e1n \u0111\u00e1nh s\u1ed1 ch\u1ee7 y\u1ebfu, v\u00e0 ch\u00fang \u0111\u1eb7t ra c\u00e1c y\u00eau c\u1ea7u kh\u00e1c nhau \u0111\u1ed1i v\u1edbi s\u1ea3n ph\u1ea9m.<\/p>\n\n <h3>1+1 so v\u1edbi N+1: c\u00f3 bao nhi\u00eau ngu\u1ed3n cung c\u1ea5p v\u00e0 m\u1ee9c x\u1ebfp h\u1ea1ng nh\u01b0 th\u1ebf n\u00e0o<\/h3>\n <p><strong>C\u01a1 ch\u1ebf d\u1ef1 ph\u00f2ng 1+1<\/strong> s\u1eed d\u1ee5ng hai b\u1ed9 ngu\u1ed3n gi\u1ed1ng h\u1ec7t nhau, m\u1ed7i b\u1ed9 \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i to\u00e0n b\u1ed9 m\u1ed9t m\u00ecnh, k\u00e8m theo c\u01a1 ch\u1ebf t\u00e1ch r\u1eddi. V\u00ec kh\u00f4ng c\u00f3 b\u1ed9 ngu\u1ed3n n\u00e0o b\u1ecb y\u00eau c\u1ea7u ph\u1ea3i v\u01b0\u1ee3t qu\u00e1 c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c c\u1ee7a n\u00f3, n\u00ean ph\u01b0\u01a1ng ph\u00e1p \u201c1+1\u201d c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi c\u00e1c b\u1ed9 ngu\u1ed3n th\u00f4ng th\u01b0\u1eddng (kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng song song), mi\u1ec5n l\u00e0 ch\u00fang \u0111\u01b0\u1ee3c t\u00e1ch r\u1eddi (<a href=\"https:\/\/www.pulspower.com\/cam\/blog\/parallel-connection-and-redundancy-of-power-supplies-what-is-the-difference\/\">PULS<\/a>, 2022).<\/p>\n <p><strong>D\u1ef1 ph\u00f2ng N+1<\/strong> l\u1eafp \u0111\u1eb7t th\u00eam m\u1ed9t thi\u1ebft b\u1ecb d\u1ef1 ph\u00f2ng so v\u1edbi s\u1ed1 l\u01b0\u1ee3ng c\u1ea7n thi\u1ebft. B\u1edfi v\u00ec h\u1ec7 th\u1ed1ng ch\u1ec9 \u0111\u1ea1t \u0111\u01b0\u1ee3c tr\u1ea1ng th\u00e1i c\u00e2n b\u1eb1ng khi c\u00e1c thi\u1ebft b\u1ecb chia s\u1ebb d\u00f2ng \u0111i\u1ec7n, <strong>N+1 y\u00eau c\u1ea7u c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn r\u00f5 r\u00e0ng l\u00e0 ph\u00f9 h\u1ee3p cho ho\u1ea1t \u0111\u1ed9ng song song<\/strong>. M\u1ed9t \u0111\u01a1n v\u1ecb th\u00f4ng th\u01b0\u1eddng kh\u00f4ng th\u1ec3 \u0111\u1ea3m nh\u1eadn vai tr\u00f2 n\u00e0y (<a href=\"https:\/\/www.pulspower.com\/cam\/blog\/parallel-connection-and-redundancy-of-power-supplies-what-is-the-difference\/\">PULS<\/a>, 2022). Sau khi gh\u00e9p song song, l\u1ea5y 90% c\u1ee7a c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c t\u1ed5ng h\u1ee3p l\u00e0m gi\u1edbi h\u1ea1n t\u1ed1i \u0111a c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng (<a href=\"https:\/\/meanwellpowersupplies.com\/technical-articles\/faq\/what-are-the-requirements-of-parallel-connections-what-are-the-differences-between-parallel-and-redundant\/\">C\u00d3 \u00dd T\u1ed0T<\/a>, (kh\u00f4ng ghi n\u0103m).<\/p>\n\n \n <div class=\"bp-b2-ratio bd-reveal\">\n <div class=\"bp-b2-col\">\n <div class=\"bp-b2-head\">1+1 \u2014 c\u1eb7p d\u1ef1 ph\u00f2ng<\/div>\n <div class=\"bp-b2-row\"><span class=\"bp-b2-num\">2 \u00d7 t\u1ea3i \u0111\u1ea7y \u0111\u1ee7<\/span><span class=\"bp-b2-desc\">m\u1ed7i chi\u1ebfc xe c\u00f3 th\u1ec3 ch\u1edf to\u00e0n b\u1ed9 h\u00e0nh kh\u00e1ch tr\u00ean xe bu\u00fdt m\u1ed9t m\u00ecnh<\/span><\/div>\n <div class=\"bp-b2-row\"><span class=\"bp-b2-num\">Xe bu\u00fdt s\u1ed1 10 A<\/span><span class=\"bp-b2-desc\">hai b\u1ed9 ph\u1eadn 10 A; m\u1ed9t b\u1ed9 ph\u1eadn c\u00f2n ho\u1ea1t \u0111\u1ed9ng mang m\u00e3 100%<\/span><\/div>\n <div class=\"bp-b2-row\"><span class=\"bp-b2-num\">B\u1ea5t k\u1ef3 lo\u1ea1i ngu\u1ed3n cung n\u00e0o<\/span><span class=\"bp-b2-desc\">C\u00e1c \u0111\u01a1n v\u1ecb th\u00f4ng th\u01b0\u1eddng v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng khi \u0111\u01b0\u1ee3c t\u00e1ch r\u1eddi<\/span><\/div>\n <\/div>\n <div class=\"bp-b2-col\">\n <div class=\"bp-b2-head\">N+1 \u2014 chia s\u1ebb v\u1edbi m\u1ed9t ng\u01b0\u1eddi d\u1ef1 ph\u00f2ng<\/div>\n <div class=\"bp-b2-row\"><span class=\"bp-b2-num\">N+1 \u00d7 t\u1ea3i \u00f7 N<\/span><span class=\"bp-b2-desc\">m\u1ed7i \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 m\u1ed9t ph\u1ea7n, c\u1ed9ng th\u00eam m\u1ed9t ph\u1ea7n d\u1ef1 ph\u00f2ng<\/span><\/div>\n <div class=\"bp-b2-row\"><span class=\"bp-b2-num\">Xe bu\u00fdt tuy\u1ebfn 60A<\/span><span class=\"bp-b2-desc\">b\u1ed1n b\u1ed9 20 A, m\u1ed7i b\u1ed9 ph\u00e2n chia d\u00f2ng \u0111i\u1ec7n kho\u1ea3ng 15 A<\/span><\/div>\n <div class=\"bp-b2-row\"><span class=\"bp-b2-num\">Ch\u1ec9 d\u00e0nh cho c\u00f4ng su\u1ea5t song song<\/span><span class=\"bp-b2-desc\">C\u00e1c thi\u1ebft b\u1ecb ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng song song<\/span><\/div>\n <\/div>\n <\/div>\n\n <h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh li\u1ec7u m\u1ed9t ngu\u1ed3n c\u1ea5p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i song song hay kh\u00f4ng<\/h3>\n <p>H\u00e3y \u0111\u1ecdc b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt nh\u01b0 m\u1ed9t danh s\u00e1ch ki\u1ec3m tra:<\/p>\n <ul>\n <li><strong>Giao di\u1ec7n chia s\u1ebb d\u00f2ng \u0111i\u1ec7n.<\/strong> CS ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb chia s\u1ebb t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i b\u1eb1ng d\u00e2y gi\u1eefa c\u00e1c \u0111\u01a1n v\u1ecb (m\u1ed9t s\u1ed1 gia \u0111\u00ecnh g\u1ecdi ch\u00fang l\u00e0 P, LP ho\u1eb7c PLINK), ho\u1eb7c m\u1ed9t ch\u1ee9c n\u0103ng chia s\u1ebb droop \u0111\u00e3 \u0111\u01b0\u1ee3c ghi ch\u00e9p r\u00f5 r\u00e0ng m\u00e0 kh\u00f4ng c\u1ea7n d\u00e2y k\u1ebft n\u1ed1i.<\/li>\n <li><strong>M\u1ed9t h\u1ec7 th\u1ed1ng x\u1ebfp h\u1ea1ng song song r\u00f5 r\u00e0ng.<\/strong> \u201cHo\u1ea1t \u0111\u1ed9ng song song t\u1ed1i \u0111a N thi\u1ebft b\u1ecb\u201d v\u1edbi s\u1ed1 l\u01b0\u1ee3ng t\u1ed1i \u0111a; h\u1ea7u h\u1ebft c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec1u gi\u1edbi h\u1ea1n s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb trong m\u1ed9t m\u1ea3ng t\u1eeb b\u1ed1n \u0111\u1ebfn s\u00e1u thi\u1ebft b\u1ecb.<\/li>\n <li><strong>M\u1ed9t ti\u1ebfp \u0111i\u1ec3m DC-OK \/ b\u00e1o \u0111\u1ed9ng.<\/strong> N\u1ebfu kh\u00f4ng c\u00f3 n\u00f3, b\u1ea1n s\u1ebd kh\u00f4ng th\u1ec3 th\u00f4ng b\u00e1o cho PLC bi\u1ebft r\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb \u0111\u00e3 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng.<\/li>\n <li><strong>Im l\u1eb7ng c\u00f3 ngh\u0129a l\u00e0 \u201ckh\u00f4ng\u201d.<\/strong> N\u1ebfu b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt li\u1ec7t k\u00ea c\u00e1c th\u00f4ng s\u1ed1 nh\u01b0 qu\u00e1 t\u1ea3i \u1edf ch\u1ebf \u0111\u1ed9 gi\u1eadt, \u0111\u1ed9 dao \u0111\u1ed9ng v\u00e0 d\u1ea3i nhi\u1ec7t \u0111\u1ed9 nh\u01b0ng kh\u00f4ng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c k\u1ebft n\u1ed1i song song, h\u00e3y coi thi\u1ebft b\u1ecb \u0111\u00f3 l\u00e0 lo\u1ea1i ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng \u0111\u01a1n l\u1ebb. \u0110\u00f3 l\u00e0 t\u00ecnh tr\u1ea1ng chung c\u1ee7a h\u1ea7u h\u1ebft c\u00e1c b\u1ed9 ngu\u1ed3n DIN-rail m\u1ecfng thu\u1ed9c d\u1ea3i c\u00f4ng su\u1ea5t 15\u2013480 W: \u0111\u00e2y l\u00e0 nh\u1eefng thi\u1ebft b\u1ecb t\u1ed1t, m\u1ed7i bus ch\u1ec9 n\u00ean l\u1eafp m\u1ed9t chi\u1ebfc.<\/li>\n <\/ul>\n <p>C\u00e1c quy t\u1eafc n\u1ed1i d\u00e2y c\u0169ng quan tr\u1ecdng kh\u00f4ng k\u00e9m th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt. H\u00e3y \u0111\u1ea3m b\u1ea3o ch\u00eanh l\u1ec7ch \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 0,2 V, v\u00e0 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb v\u1edbi nhau b\u1eb1ng d\u00e2y ng\u1eafn, c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn <em>tr\u01b0\u1edbc \u0111\u00f3<\/em> k\u1ebft n\u1ed1i m\u1ed9t c\u1eb7p d\u00e2y d\u1eabn v\u1edbi t\u1ea3i. Ngo\u00e0i ra, h\u00e3y \u0111\u1ea3m b\u1ea3o t\u1ed5ng t\u1ea3i lu\u00f4n \u1edf m\u1ee9c cao h\u01a1n kho\u1ea3ng 10% so v\u1edbi c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb: n\u1ebfu th\u1ea5p h\u01a1n m\u1ee9c \u0111\u00f3, c\u00e1c t\u00edn hi\u1ec7u \u201cpower-good\u201d v\u00e0 c\u1ea3nh b\u00e1o c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng b\u1ea5t th\u01b0\u1eddng d\u00f9 th\u1ef1c t\u1ebf kh\u00f4ng c\u00f3 s\u1ef1 c\u1ed1 n\u00e0o x\u1ea3y ra (<a href=\"https:\/\/meanwellpowersupplies.com\/technical-articles\/faq\/what-are-the-requirements-of-parallel-connections-what-are-the-differences-between-parallel-and-redundant\/\">C\u00d3 \u00dd T\u1ed0T<\/a>, (kh\u00f4ng ghi n\u0103m).<\/p>\n\n \n <div class=\"rich-table-title\">C\u00e1ch b\u1ed1 tr\u00ed song song n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi b\u1ed1i c\u1ea3nh c\u1ee7a b\u1ea1n?<\/div>\n <div class=\"table-wrapper\">\n <table class=\"rich-table\">\n <thead>\n <tr>\n <th>K\u1ecbch b\u1ea3n<\/th>\n <th>C\u00e0i \u0111\u1eb7t \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/th>\n <th>C\u1ea7n ki\u1ec3m tra nh\u1eefng g\u00ec<\/th>\n <th>Khi n\u00e0o n\u00ean chuy\u1ec3n sang<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>M\u1edf r\u1ed9ng v\u0129nh vi\u1ec5n (t\u1ea3i tr\u1ecdng v\u01b0\u1ee3t qu\u00e1 m\u1ed9t \u0111\u01a1n v\u1ecb)<\/td>\n <td>C\u00e1c thi\u1ebft b\u1ecb c\u00f3 c\u00f4ng su\u1ea5t song song (2\u20134) ho\u1eb7c chia t\u1ea3i<\/td>\n <td>C\u00f9ng m\u1eabu v\u00e0 c\u00f9ng l\u00f4; c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i CS \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i; t\u1ed5ng c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c \u226490%; ch\u00eanh l\u1ec7ch \u0111i\u1ec7n \u00e1p d\u01b0\u1edbi 0,2 V<\/td>\n <td>Khi t\u1ea3i gi\u1ea3m, h\u00e3y gi\u1ea3m xu\u1ed1ng c\u00f2n m\u1ed9t \u0111\u01a1n v\u1ecb<\/td>\n <\/tr>\n <tr>\n <td>T\u1ee7 m\u1edbi, th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt d\u1ef1 ph\u00f2ng 1+1<\/td>\n <td>C\u1eb7p thi\u1ebft b\u1ecb song song, ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb th\u00f4ng th\u01b0\u1eddng + m\u00f4-\u0111un d\u1ef1 ph\u00f2ng<\/td>\n <td>M\u1ed7i thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 ch\u1ecbu t\u1ea3i \u0111\u1ea7y \u0111\u1ee7 m\u1ed9t m\u00ecnh; ti\u1ebfp \u0111i\u1ec3m DC-OK k\u1ebft n\u1ed1i v\u1edbi PLC; c\u00e1c ngu\u1ed3n c\u1ea5p AC ri\u00eang bi\u1ec7t<\/td>\n <td>Ki\u1ec3m tra xem t\u1eebng thi\u1ebft b\u1ecb c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1edf c\u00f4ng su\u1ea5t t\u1ed1i \u0111a \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1ee7 hay kh\u00f4ng<\/td>\n <\/tr>\n <tr>\n <td>D\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t, N+1<\/td>\n <td>Ch\u1ec9 \u00e1p d\u1ee5ng cho c\u00e1c thi\u1ebft b\u1ecb c\u00f3 c\u00f4ng su\u1ea5t song song (ph\u1ea3i h\u1ed7 tr\u1ee3 chia s\u1ebb)<\/td>\n <td>\u0110\u00e1nh gi\u00e1 c\u1ee7a N \u0111\u01a1n v\u1ecb \u2265 1,1 l\u1ea7n t\u1ea3i tr\u1ecdng; duy tr\u00ec bi\u00ean \u0111\u1ed9 an to\u00e0n cho m\u1ed7i \u0111\u01a1n v\u1ecb<\/td>\n <td>N\u1ebfu kh\u00f4ng c\u00f2n ch\u1ed7 tr\u1ed1ng trong t\u1ee7, h\u00e3y h\u1ea1 c\u1ea5p xu\u1ed1ng g\u00f3i 1+1<\/td>\n <\/tr>\n <tr>\n <td>Thay th\u1ebf t\u1ea1m th\u1eddi (thi\u1ebft b\u1ecb ch\u00ednh b\u1ecb h\u1ecfng, thi\u1ebft b\u1ecb d\u1ef1 ph\u00f2ng \u0111ang \u0111\u01b0\u1ee3c \u0111\u1eb7t h\u00e0ng)<\/td>\n <td>Chia t\u1ea3i, ho\u1eb7c c\u00e1c m\u1ea1ch th\u00f4ng th\u01b0\u1eddng + t\u00e1ch t\u00edn hi\u1ec7u b\u1eb1ng \u0111i-\u1ed1t<\/td>\n <td>T\u1ea3i ph\u1ea3i \u0111\u01b0\u1ee3c chia th\u00e0nh hai ph\u1ea7n, ho\u1eb7c m\u1ee9c s\u1ee5t \u00e1p ph\u1ea3i \u1edf m\u1ee9c ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c<\/td>\n <td>Khi ph\u1ee5 t\u00f9ng thay th\u1ebf \u0111\u1ebfn, h\u00e3y chuy\u1ec3n v\u1ec1 tr\u1ea1ng th\u00e1i ch\u1ec9 c\u00f3 m\u1ed9t \u0111\u01a1n v\u1ecb<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <h3>Ngu\u1ed3n \u0111i\u1ec7n h\u1ed7 tr\u1ee3 ch\u1ebf \u0111\u1ed9 song song, hay ngu\u1ed3n \u0111i\u1ec7n th\u00f4ng th\u01b0\u1eddng k\u1ebft h\u1ee3p v\u1edbi m\u00f4-\u0111un d\u1ef1 ph\u00f2ng?<\/h3>\n <p>\u0110\u1ed1i v\u1edbi t\u1ee7 m\u1edbi, h\u00e3y mua theo th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt: b\u1ed9 ngu\u1ed3n h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i song song cho c\u1ea5u h\u00ecnh N+1, v\u00e0 \u0111\u1ed1i v\u1edbi c\u1ea5u h\u00ecnh 1+1 th\u00ec c\u00f3 th\u1ec3 ch\u1ecdn c\u1eb7p b\u1ed9 ngu\u1ed3n h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i song song ho\u1eb7c c\u00e1c b\u1ed9 ngu\u1ed3n th\u00f4ng th\u01b0\u1eddng k\u1ebft h\u1ee3p v\u1edbi m\u00f4-\u0111un d\u1ef1 ph\u00f2ng. \u0110\u1ed1i v\u1edbi t\u1ee7 \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t s\u1eb5n, gi\u1ea3i ph\u00e1p n\u00e2ng c\u1ea5p g\u1ea7n nh\u01b0 lu\u00f4n l\u00e0 s\u1eed d\u1ee5ng b\u1ed9 ngu\u1ed3n th\u00f4ng th\u01b0\u1eddng k\u1ebft h\u1ee3p v\u1edbi m\u00f4-\u0111un: b\u1ea1n v\u1eabn gi\u1eef nguy\u00ean di\u1ec7n t\u00edch l\u1eafp \u0111\u1eb7t v\u00e0 t\u1eadn d\u1ee5ng \u0111\u01b0\u1ee3c c\u00e1c ti\u1ebfp \u0111i\u1ec3m DC-OK c\u1ee7a m\u00f4-\u0111un. C\u00f3 m\u1ed9t c\u1ea3nh b\u00e1o t\u1eeb c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t m\u00f4-\u0111un m\u00e0 b\u1ea1n n\u00ean l\u01b0u \u00fd: m\u1ed9t b\u1ed9 ngu\u1ed3n c\u00f3 ch\u1ee9c n\u0103ng song song kh\u00f4ng t\u1ef1 \u0111\u1ed9ng s\u1eb5n s\u00e0ng cho d\u1ef1 ph\u00f2ng, v\u00ec c\u00e1c m\u1ea1ch chia s\u1ebb d\u00f2ng \u0111i\u1ec7n ch\u1ee7 \u0111\u1ed9ng th\u01b0\u1eddng thi\u1ebfu b\u1ea3o v\u1ec7 ch\u1ed1ng d\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c. N\u1ebfu m\u1ed9t thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i song song b\u1ecb h\u1ecfng v\u00e0 g\u00e2y ra ng\u1eafn m\u1ea1ch \u0111\u1ea7u ra, n\u00f3 c\u00f3 th\u1ec3 l\u00e0m s\u1ee5t \u00e1p tr\u00ean \u0111\u01b0\u1eddng d\u1eabn (bus) tr\u1eeb khi c\u00f3 g\u00ec \u0111\u00f3 ng\u1eaft k\u1ebft n\u1ed1i n\u00f3. \u0110\u00f3 ch\u00ednh x\u00e1c l\u00e0 nh\u1eefng g\u00ec c\u00e1c \u0111i-\u1ed1t ho\u1eb7c m\u00f4-\u0111un d\u1ef1a tr\u00ean MOSFET cung c\u1ea5p (<a href=\"https:\/\/www.meanwell.com\/newsInfo.aspx?c=5&i=847\">C\u00d3 \u00dd T\u1ed0T<\/a>, 2020). \u0110\u1ed3ng th\u1eddi, n\u1ebfu c\u00f3 th\u1ec3, h\u00e3y c\u1ea5p ngu\u1ed3n cho t\u1eebng h\u1ec7 th\u1ed1ng d\u1ef1 ph\u00f2ng t\u1eeb m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n xoay chi\u1ec1u ri\u00eang bi\u1ec7t, \u0111\u1ec3 tr\u01b0\u1eddng h\u1ee3p m\u1ea5t m\u1ed9t pha kh\u00f4ng l\u00e0m c\u1ea3 hai thi\u1ebft b\u1ecb ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u00f9ng l\u00fac (<a href=\"https:\/\/www.pulspower.com\/cam\/blog\/parallel-connection-and-redundancy-of-power-supplies-what-is-the-difference\/\">PULS<\/a>, 2022).<\/p>\n\n <h2>T\u1ea1i sao c\u00e1c b\u1ed9 ngu\u1ed3n n\u1ed1i song song l\u1ea1i g\u1eb7p s\u1ef1 c\u1ed1: S\u1ef1 lan truy\u1ec1n l\u1ed7i, b\u1eaby t\u1ea3i nh\u1eb9 v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m tra t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng<\/h2>\n <p>M\u1ecdi s\u1ef1 c\u1ed1 x\u1ea3y ra v\u1edbi h\u1ec7 th\u1ed1ng song song \u0111\u1ec1u b\u1eaft ngu\u1ed3n t\u1eeb m\u1ed9t nguy\u00ean t\u1eafc: d\u00f2ng \u0111i\u1ec7n ph\u1ea3i <em>\u0111\u01b0\u1ee3c chia s\u1ebb<\/em>, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 \u0111\u01b0\u1ee3c ph\u00e9p. N\u1ebfu kh\u00f4ng c\u00f3 s\u1ef1 ph\u00e2n chia t\u1ea3i, thi\u1ebft b\u1ecb c\u00f3 \u0111i\u1ec7n \u00e1p cao nh\u1ea5t s\u1ebd ph\u1ea3i g\u00e1nh v\u00e1c to\u00e0n b\u1ed9 t\u1ea3i cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u1ebfn gi\u1edbi h\u1ea1n v\u00e0 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. C\u00f3 hai c\u01a1 ch\u1ebf kh\u1eafc ph\u1ee5c v\u1ea5n \u0111\u1ec1 n\u00e0y (<a href=\"https:\/\/www.digikey.com\/en\/articles\/properly-configure-parallel-power-supplies\">DigiKey<\/a>, 2016):<\/p>\n <ul>\n <li><strong>Chia s\u1ebb Droop (th\u1ee5 \u0111\u1ed9ng)<\/strong> H\u00e3y \u0111\u1ec3 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra gi\u1ea3m nh\u1eb9 khi d\u00f2ng \u0111i\u1ec7n t\u0103ng l\u00ean, nh\u1edd \u0111\u00f3 thi\u1ebft b\u1ecb b\u1ecb qu\u00e1 t\u1ea3i s\u1ebd gi\u1ea3m \u0111i\u1ec7n \u00e1p v\u00e0 c\u00e1c thi\u1ebft b\u1ecb c\u00f2n l\u1ea1i s\u1ebd b\u00f9 \u0111\u1eafp ph\u1ea7n thi\u1ebfu h\u1ee5t. C\u00e1ch l\u00e0m n\u00e0y \u0111\u01a1n gi\u1ea3n v\u00e0 b\u1ec1n b\u1ec9; \u0111\u1ed5i l\u1ea1i, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a \u0111i\u1ec7n \u00e1p s\u1ebd k\u00e9m h\u01a1n.<\/li>\n <li><strong>Chia s\u1ebb t\u00edch c\u1ef1c<\/strong> n\u1ed1i c\u00e1c v\u00f2ng l\u1eb7p c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb l\u1ea1i v\u1edbi nhau th\u00f4ng qua m\u1ed9t d\u00e2y chung \u0111\u1ec3 ch\u00fang \u0111i\u1ec1u ch\u1ec9nh c\u00f9ng m\u1ed9t c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n. C\u00e1ch n\u00e0y mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng ch\u1eb7t ch\u1ebd h\u01a1n, nh\u01b0ng do ph\u1ea3i \u0111i th\u00eam d\u00e2y v\u00e0 thi\u1ebfu ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 ng\u01b0\u1ee3c n\u00ean n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi c\u01a1 ch\u1ebf t\u00e1ch bi\u1ec7t khi m\u1ee5c ti\u00eau l\u00e0 \u0111\u1ea3m b\u1ea3o d\u1ef1 ph\u00f2ng.<\/li>\n <\/ul>\n\n \n <blockquote class=\"bp-b3-pin bd-reveal\">M\u1ed9t \u0111i-\u1ed1t ho\u1eb7c m\u1ed9t m\u00f4-\u0111un \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t gi\u1eefa m\u1ed7i ngu\u1ed3n c\u1ea5p v\u00e0 \u0111\u01b0\u1eddng d\u1eabn ch\u00ednh ch\u00ednh l\u00e0 y\u1ebfu t\u1ed1 bi\u1ebfn ch\u1ebf \u0111\u1ed9 \u201csong song\u201d th\u00e0nh ch\u1ebf \u0111\u1ed9 \u201cd\u1ef1 ph\u00f2ng\u201d \u2014 n\u00f3 ng\u0103n ch\u1eb7n d\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c ch\u1ea3y v\u00e0o \u0111\u1ea7u ra b\u1ecb ch\u1eadp m\u1ea1ch c\u1ee7a thi\u1ebft b\u1ecb b\u1ecb h\u1ecfng.<\/blockquote>\n\n <p>N\u1ebfu b\u1ecf qua b\u01b0\u1edbc t\u00e1ch r\u1eddi, ch\u1ec9 c\u1ea7n m\u1ed9t s\u1ef1 c\u1ed1 duy nh\u1ea5t c\u0169ng \u0111\u1ee7 \u0111\u1ec3 bi\u1ebfn c\u1eb7p d\u1ef1 ph\u00f2ng c\u1ee7a b\u1ea1n th\u00e0nh m\u1ed9t s\u1ef1 c\u1ed1 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng tr\u00ean to\u00e0n h\u1ec7 th\u1ed1ng.<\/p>\n\n <img decoding=\"async\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/09\/Power-Supplies-in-Parallel.webp\" style=\"width: 512px; height: 384px; max-width: 100%; object-fit: cover; border-radius: 12px; margin: 30px auto; display: block; box-shadow: 10px 10px 60px 0px rgba(210, 221, 224, 0.35); transition: all 0.3s ease; cursor: pointer;\" onmouseover=\"this.style.transform='translateY(-5px) scale(1.03)'; this.style.boxShadow='15px 25px 80px 0px rgba(210, 221, 224, 0.45)'\" onmouseout=\"this.style.transform='translateY(0) scale(1)'; this.style.boxShadow='10px 10px 60px 0px rgba(210, 221, 224, 0.35)'\"> \n\n <h3>Ki\u1ec3m tra th\u1ef1c \u0111\u1ecba: c\u1ea3nh b\u00e1o t\u1ea3i nh\u1eb9, thay th\u1ebf n\u00f3ng v\u00e0 c\u00e1c tri\u1ec7u ch\u1ee9ng li\u00ean quan \u0111\u1ebfn m\u1ea1ch \u0111i-\u1ed1t<\/h3>\n <p>Khi m\u1ed9t c\u1ea5u h\u00ecnh k\u1ebft h\u1ee3p ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng \u0111\u00fang, h\u00e3y ki\u1ec3m tra danh s\u00e1ch theo th\u1ee9 t\u1ef1:<\/p>\n <ol>\n <li><strong>Tr\u01b0\u1edbc ti\u00ean, h\u00e3y c\u00e1ch ly.<\/strong> Ng\u1eaft k\u1ebft n\u1ed1i \u0111\u01b0\u1eddng d\u00e2y ch\u00ednh, n\u1ed1i t\u1eebng ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n v\u00e0o t\u1ea3i ri\u00eang c\u1ee7a n\u00f3, r\u1ed3i ki\u1ec3m tra \u0111i\u1ec7n \u00e1p v\u00e0 t\u00edn hi\u1ec7u DC-OK tr\u00ean t\u1eebng ngu\u1ed3n. C\u00e1ch n\u00e0y gi\u00fap ph\u00e2n bi\u1ec7t gi\u1eefa \u201cm\u1ed9t thi\u1ebft b\u1ecb b\u1ecb l\u1ed7i\u201d v\u00e0 \u201cs\u1ef1 k\u1ebft h\u1ee3p kh\u00f4ng \u0111\u00fang\u201d.\u201d<\/li>\n <li><strong>H\u00e3y tu\u00e2n th\u1ee7 quy t\u1eafc t\u1ea3i nh\u1eb9.<\/strong> Khi m\u1ee9c \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3 gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi kho\u1ea3ng 10%, c\u00e1c t\u00edn hi\u1ec7u \u201cpower-good\u201d\/b\u00e1o \u0111\u1ed9ng c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t ch\u00ednh x\u00e1c v\u00e0 vi\u1ec7c chia s\u1ebb ngu\u1ed3n c\u00f3 th\u1ec3 tr\u1edf n\u00ean m\u1ea5t c\u00e2n b\u1eb1ng; \u0111\u00e2y l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00e3 \u0111\u01b0\u1ee3c ghi nh\u1eadn trong t\u00e0i li\u1ec7u, kh\u00f4ng ph\u1ea3i do thi\u1ebft b\u1ecb b\u1ecb h\u1ecfng (<a href=\"https:\/\/meanwellpowersupplies.com\/technical-articles\/faq\/what-are-the-requirements-of-parallel-connections-what-are-the-differences-between-parallel-and-redundant\/\">C\u00d3 \u00dd T\u1ed0T<\/a>, (kh\u00f4ng ghi ng\u00e0y th\u00e1ng). H\u00e3y l\u00ean xe bu\u00fdt ho\u1eb7c ph\u1edbt l\u1edd ti\u1ebfng c\u00f2i b\u00e1o \u0111\u1ed9ng, nh\u01b0ng h\u00e3y bi\u1ebft r\u00f5 m\u00ecnh \u0111ang l\u00e0m g\u00ec.<\/li>\n <li><strong>\u0110o m\u1ea1ch \u0111i-\u1ed1t \u0111\u00fang c\u00e1ch.<\/strong> \u0110i\u1ec7n \u00e1p bus khi kh\u00f4ng t\u1ea3i n\u00ean th\u1ea5p h\u01a1n gi\u00e1 tr\u1ecb c\u00e0i \u0111\u1eb7t c\u1ee7a ngu\u1ed3n c\u1ea5p kho\u1ea3ng 0,3\u20130,5 V. N\u1ebfu ch\u1ec9 s\u1ed1 hi\u1ec3n th\u1ecb b\u1eb1ng gi\u00e1 tr\u1ecb c\u00e0i \u0111\u1eb7t t\u1ed1i \u0111a, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t \u0111i-\u1ed1t b\u1ecb ch\u1eadp m\u1ea1ch v\u00e0 thi\u1ebft b\u1ecb \u0111\u00f3 kh\u00f4ng c\u00f2n \u0111\u01b0\u1ee3c c\u00e1ch ly. T\u00ecnh tr\u1ea1ng \u0111i-\u1ed1t qu\u00e1 n\u00f3ng khi t\u1ea3i \u1edf m\u1ee9c v\u1eeba ph\u1ea3i cho th\u1ea5y c\u00e1c linh ki\u1ec7n c\u00f3 c\u00f4ng su\u1ea5t kh\u00f4ng \u0111\u1ee7 ho\u1eb7c thi\u1ebfu b\u1ed9 t\u1ea3n nhi\u1ec7t \u2014 \u0111\u00e2y l\u00e0 nguy\u00ean nh\u00e2n h\u1ecfng h\u00f3c ph\u1ed5 bi\u1ebfn nh\u1ea5t trong c\u00e1c d\u1ef1 \u00e1n t\u1ef1 l\u00e0m.<\/li>\n <li><strong>Kh\u00f4ng \u0111\u01b0\u1ee3c thay th\u1ebf thi\u1ebft b\u1ecb khi \u0111ang ho\u1ea1t \u0111\u1ed9ng tr\u1eeb khi c\u00f3 h\u01b0\u1edbng d\u1eabn c\u1ee5 th\u1ec3.<\/strong> Vi\u1ec7c th\u00e1o v\u00e0 thay th\u1ebf m\u1ed9t thi\u1ebft b\u1ecb tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng bus chung \u0111ang ho\u1ea1t \u0111\u1ed9ng ch\u1ec9 an to\u00e0n khi ph\u1ea7n c\u1ee9ng \u0111\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u0111i\u1ec1u ki\u1ec7n \u0111\u00f3. Tr\u00ean h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng \u0111i-\u1ed1t, h\u00e3y ng\u1eaft t\u1ea3i ho\u1eb7c t\u1eaft ngu\u1ed3n \u0111\u01b0\u1eddng ray tr\u01b0\u1edbc.<\/li>\n <li><strong>Kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c tr\u1ed9n l\u1eabn c\u00e1c th\u01b0\u01a1ng hi\u1ec7u, m\u1eabu m\u00e3 ho\u1eb7c m\u1ee9c x\u1ebfp h\u1ea1ng trong c\u00f9ng m\u1ed9t nh\u00f3m.<\/strong> C\u00e1c gi\u00e1 tr\u1ecb \u0111\u1eb7t v\u00e0 \u0111\u01b0\u1eddng cong dao \u0111\u1ed9ng kh\u00e1c nhau s\u1ebd l\u00e0m m\u1ea5t kh\u1ea3 n\u0103ng chia s\u1ebb ngay t\u1eeb \u0111\u1ea7u; n\u1ebfu c\u00e1c thi\u1ebft b\u1ecb ph\u1ea3i kh\u00e1c nhau, h\u00e3y chia t\u1ea3i (\u0110\u01b0\u1eddng d\u1eabn 1).<\/li>\n <\/ol>\n\n \n <div class=\"rich-callout\">\n <span class=\"rich-callout-icon\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"m21.73 18-8-14a2 2 0 0 0-3.48 0l-8 14A2 2 0 0 0 4 21h16a2 2 0 0 0 1.73-3Z\"\/><path d=\"M12 9v4\"\/><path d=\"M12 17h.01\"\/><\/svg><\/span>\n <div class=\"rich-callout-body\">Tr\u00ean m\u1ed9t bus song song \u0111ang ho\u1ea1t \u0111\u1ed9ng: kh\u00f4ng \u0111\u01b0\u1ee3c thay th\u1ebf n\u00f3ng c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u1ed7 tr\u1ee3 t\u00ednh n\u0103ng n\u00e0y, v\u00e0 tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p c\u00e1c m\u1eabu kh\u00e1c nhau \u2014 ph\u1ea3i c\u00f3 c\u00f9ng m\u00e3 s\u1ea3n ph\u1ea9m v\u00e0 c\u00f9ng gi\u00e1 tr\u1ecb c\u00e0i \u0111\u1eb7t. M\u1ed9t thi\u1ebft b\u1ecb b\u1ecb l\u1ed7i c\u00f3 \u0111\u1ea7u ra b\u1ecb ng\u1eafn m\u1ea1ch s\u1ebd l\u00e0m s\u1ee5t \u00e1p t\u1ea5t c\u1ea3 c\u00e1c ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c c\u00e1ch ly v\u1edbi n\u00f3.<\/div>\n <\/div>\n\n <p>N\u1ebfu \u0111i\u1ec7n \u00e1p tr\u00ean bus kh\u00f4ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 li\u00ean t\u1ee5c ng\u1eaft m\u1ea1ch ngay c\u1ea3 khi c\u00e1c thi\u1ebft b\u1ecb \u0111\u00e3 \u0111\u01b0\u1ee3c gh\u00e9p n\u1ed1i ph\u00f9 h\u1ee3p v\u00e0 h\u1ec7 th\u1ed1ng d\u00e2y d\u1eabn \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t \u0111\u00fang c\u00e1ch, h\u00e3y d\u1eebng l\u1ea1i: v\u1ea5n \u0111\u1ec1 \u0111\u00e3 kh\u00f4ng c\u00f2n n\u1eb1m \u1edf h\u1ec7 th\u1ed1ng gh\u00e9p song song m\u00e0 \u0111\u00e3 chuy\u1ec3n sang c\u00e1c thi\u1ebft b\u1ecb ho\u1eb7c h\u1ec7 th\u1ed1ng d\u00e2y d\u1eabn \u1edf ph\u00eda th\u01b0\u1ee3ng ngu\u1ed3n.<\/p>\n\n <h2>\u00dd ngh\u0129a c\u1ee7a c\u00e1c b\u1ed9 ngu\u1ed3n song song khi b\u1ea1n b\u00e1n ho\u1eb7c nh\u1eadp kho ch\u00fang<\/h2>\n <p>Khi kh\u00e1ch h\u00e0ng h\u1ecfi li\u1ec7u hai ngu\u1ed3n \u0111i\u1ec7n 24 V \u201cc\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c n\u1ed1i song song\u201d hay kh\u00f4ng, h\u1ecd hi\u1ebfm khi ch\u1ec9 mu\u1ed1n nghe c\u00e2u tr\u1ea3 l\u1eddi \u201cc\u00f3\u201d hay \u201ckh\u00f4ng\u201d. C\u00e2u h\u1ecfi n\u00e0y th\u01b0\u1eddng h\u00e0m \u00fd m\u1ed9t trong ba tr\u01b0\u1eddng h\u1ee3p sau: t\u1ea3i \u0111\u00e3 v\u01b0\u1ee3t qu\u00e1 c\u00f4ng su\u1ea5t c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb duy nh\u1ea5t; m\u1ed9t thi\u1ebft b\u1ecb \u0111\u00e3 h\u1ecfng v\u00e0 c\u00f2n hai thi\u1ebft b\u1ecb nh\u1ecf h\u01a1n \u0111ang n\u1eb1m tr\u00ean k\u1ec7; ho\u1eb7c m\u00e1y m\u00f3c kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. M\u1ed7i \u00fd \u0111\u1ecbnh n\u00e0y s\u1ebd d\u1eabn \u0111\u1ebfn m\u1ed9t c\u00e2u tr\u1ea3 l\u1eddi kh\u00e1c nhau v\u00e0 m\u1ed9t \u0111\u01a1n \u0111\u1eb7t h\u00e0ng kh\u00e1c nhau.<\/p>\n <p>V\u1ea5n \u0111\u1ec1 n\u00e0y n\u1eb1m trong logic s\u1eeda ch\u1eefa v\u00e0 thay th\u1ebf. M\u1ed9t b\u1ed9 ngu\u1ed3n 40 A b\u1ecb h\u1ecfng, b\u1ed9 d\u1ef1 ph\u00f2ng ph\u1ea3i \u0111\u1ee3i hai tu\u1ea7n n\u1eefa m\u1edbi c\u00f3, v\u00e0 k\u1ef9 thu\u1eadt vi\u00ean c\u00f3 hai b\u1ed9 20 A. \u0110\u00e2y l\u00e0 tr\u01b0\u1eddng h\u1ee3p thu\u1ed9c L\u1ed9 tr\u00ecnh 1 (chia t\u1ea3i) ho\u1eb7c L\u1ed9 tr\u00ecnh 2 (b\u1ed9 gh\u00e9p \u0111i\u1ed1t): c\u1ea3 hai \u0111\u1ec1u l\u00e0 c\u00e1c ph\u01b0\u01a1ng \u00e1n h\u1ee3p l\u1ec7 theo ki\u1ec3u 1+1, trong \u0111\u00f3 m\u1ed7i b\u1ed9 c\u00f3 th\u1ec3 ch\u1ecbu m\u1ed9t n\u1eeda t\u1ea3i ho\u1eb7c to\u00e0n b\u1ed9 t\u1ea3i, t\u00f9y theo t\u1eebng tr\u01b0\u1eddng h\u1ee3p. V\u00ec v\u1eady, h\u00e3y h\u1ecfi r\u00f5 m\u1ee5c ti\u00eau (c\u00f4ng su\u1ea5t, thay th\u1ebf ho\u1eb7c th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng) tr\u01b0\u1edbc khi b\u00e1o gi\u00e1. M\u1ee5c ti\u00eau s\u1ebd quy\u1ebft \u0111\u1ecbnh li\u1ec7u kh\u00e1ch h\u00e0ng c\u1ea7n m\u1ed9t thi\u1ebft b\u1ecb l\u1edbn h\u01a1n, m\u1ed9t c\u1eb7p thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p c\u00f3 b\u1ed9 t\u00e1ch t\u1ea3i, hay m\u1ed9t c\u1eb7p thi\u1ebft b\u1ecb song song c\u00f3 m\u00f4-\u0111un d\u1ef1 ph\u00f2ng.<\/p>\n <p>\u0110\u1ed1i v\u1edbi chi\u1ebfn l\u01b0\u1ee3c qu\u1ea3n l\u00fd h\u00e0ng t\u1ed3n kho, \u0111i\u1ec1u n\u00e0y g\u1ee3i \u00fd n\u00ean k\u1ebft h\u1ee3p c\u00e1c thi\u1ebft b\u1ecb thay v\u00ec ch\u1ecdn lo\u1ea1i c\u00f3 c\u00f4ng su\u1ea5t qu\u00e1 l\u1edbn. Thay v\u00ec ch\u1ec9 c\u00f3 m\u1ed9t m\u00e3 h\u00e0ng (SKU) l\u1edbn cho m\u1ed7i d\u1ea3i \u0111i\u1ec7n \u00e1p, h\u00e3y d\u1ef1 tr\u1eef c\u00e1c c\u1eb7p ngu\u1ed3n ti\u00eau chu\u1ea9n ph\u00f9 h\u1ee3p c\u00f9ng v\u1edbi c\u00e1c linh ki\u1ec7n gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n khi k\u1ebft h\u1ee3p ch\u00fang. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 m\u1ed7i \u0111\u1ea7u ra c\u1ee7a ngu\u1ed3n ph\u1ea3i c\u00f3 m\u1ed9t m\u00f4-\u0111un d\u1ef1 ph\u00f2ng (ho\u1eb7c b\u1ed9 diode), m\u1ed9t c\u1ea7u ch\u00ec nh\u00e1nh ho\u1eb7c c\u1ea7u dao mini, c\u00f9ng v\u1edbi c\u00e1c \u0111\u1ea7u n\u1ed1i thanh c\u00e1i c\u00f3 k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p cho h\u1ec7 th\u1ed1ng d\u00e2y song song ng\u1eafn v\u00e0 d\u00e0y. M\u1ed9t nh\u00e0 ph\u00e2n ph\u1ed1i \u0111\u1ea7y \u0111\u1ee7 d\u00f2ng s\u1ea3n ph\u1ea9m c\u00f3 th\u1ec3 giao ngu\u1ed3n \u0111i\u1ec7n DIN-rail, m\u00f4-\u0111un, thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 nh\u00e1nh v\u00e0 kh\u1ed1i \u0111\u1ea7u n\u1ed1i trong m\u1ed9t \u0111\u01a1n h\u00e0ng. Ranh gi\u1edbi h\u1ee3p l\u00fd c\u0169ng r\u1ea5t quan tr\u1ecdng. \u0110\u1ed1i v\u1edbi t\u1ea3i n\u1eb1m tho\u1ea3i m\u00e1i trong ph\u1ea1m vi \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb, l\u1eddi khuy\u00ean \u0111\u00fang \u0111\u1eafn l\u00e0 s\u1eed d\u1ee5ng m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n duy nh\u1ea5t c\u1ed9ng v\u1edbi m\u1ed9t ngu\u1ed3n d\u1ef1 ph\u00f2ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ed9t c\u1eb7p song song. V\u00e0 d\u1ef1 ph\u00f2ng 1+1 gi\u00fap t\u0103ng g\u1ea5p \u0111\u00f4i t\u00ednh s\u1eb5n s\u00e0ng, ch\u1ee9 kh\u00f4ng bao gi\u1edd t\u0103ng c\u00f4ng su\u1ea5t.<\/p>\n\n \n <div class=\"rich-checklist bd-reveal\">\n <div class=\"rich-checklist-title\"><span class=\"rich-checklist-icon\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"m3 17 2 2 4-4\"\/><path d=\"m3 7 2 2 4-4\"\/><path d=\"M13 6h8\"\/><path d=\"M13 12h8\"\/><path d=\"M13 18h8\"\/><\/svg><\/span>B\u1ed9 s\u1ea3n ph\u1ea9m thay th\u1ebf d\u1ef1 ph\u00f2ng (b\u1ed9 d\u1ee5ng c\u1ee5 1+1)<\/div>\n <div class=\"rich-checklist-item\"><span class=\"rich-checklist-check\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span><div class=\"rich-checklist-text\">\u0110\u01a1n v\u1ecb th\u1ee9 hai: c\u00f9ng m\u1eabu, c\u00f9ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt (n\u1ebfu c\u00f3 th\u1ec3 th\u00ec c\u00f9ng l\u00f4 s\u1ea3n xu\u1ea5t).<\/div><\/div>\n <div class=\"rich-checklist-item\"><span class=\"rich-checklist-check\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span><div class=\"rich-checklist-text\">T\u00e1ch r\u1eddi: m\u1ed9t m\u00f4-\u0111un d\u1ef1 ph\u00f2ng, ho\u1eb7c m\u1ed9t \u0111i-\u1ed1t c\u00f4ng su\u1ea5t cho m\u1ed7i \u0111\u1ea7u ra k\u00e8m theo b\u1ed9 t\u1ea3n nhi\u1ec7t.<\/div><\/div>\n <div class=\"rich-checklist-item\"><span class=\"rich-checklist-check\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span><div class=\"rich-checklist-text\">B\u1ea3o v\u1ec7 t\u1eebng nh\u00e1nh theo t\u1eebng \u0111\u1ea7u ra ngu\u1ed3n (c\u1ea7u ch\u00ec ho\u1eb7c c\u00f4ng t\u1eafc ng\u1eaft m\u1ea1ch mini).<\/div><\/div>\n <div class=\"rich-checklist-item\"><span class=\"rich-checklist-check\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span><div class=\"rich-checklist-text\">B\u1ebfn xe bu\u00fdt v\u00e0 c\u00e1c d\u00e2y nh\u1ea3y ng\u1eafn, d\u00e0y.<\/div><\/div>\n <div class=\"rich-checklist-item\"><span class=\"rich-checklist-check\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span><div class=\"rich-checklist-text\">DC-OK \/ c\u00e1c ti\u1ebfp \u0111i\u1ec3m b\u00e1o \u0111\u1ed9ng k\u1ebft n\u1ed1i v\u1edbi PLC (n\u1ebfu m\u00f4-\u0111un c\u00f3 c\u00e1c ti\u1ebfp \u0111i\u1ec3m n\u00e0y).<\/div><\/div>\n <div class=\"rich-checklist-item\"><span class=\"rich-checklist-check\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span><div class=\"rich-checklist-text\">N\u1ebfu c\u00f3 th\u1ec3, h\u00e3y t\u00e1ch ri\u00eang c\u00e1c \u0111\u01b0\u1eddng c\u1ea5p ngu\u1ed3n AC.<\/div><\/div>\n <\/div>\n\n <p><em>N\u1ebfu b\u1ea1n c\u1ea7n h\u1ed7 tr\u1ee3 \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i t\u00e0i li\u1ec7u n\u00e0y th\u00e0nh b\u1ea3ng danh m\u1ee5c v\u1eadt t\u01b0, vui l\u00f2ng g\u1eedi b\u1ea3n th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 b\u1ea3n v\u1ebd t\u1ee7 \u0111\u1ebfn b\u1ed9 ph\u1eadn c\u1ee7a ch\u00fang t\u00f4i <a href=\"https:\/\/www.omch.com\/vi\/product-selection\/\">d\u1ecbch v\u1ee5 t\u01b0 v\u1ea5n l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m<\/a>; ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c b\u1ed9 ngu\u1ed3n l\u1eafp tr\u00ean thanh DIN, m\u00f4-\u0111un d\u1ef1 ph\u00f2ng v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 t\u01b0\u01a1ng \u1ee9ng. Ch\u00fang t\u00f4i c\u00f3 th\u1ec3 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m m\u1eabu cho t\u1ed5 h\u1ee3p n\u00e0y tr\u01b0\u1edbc khi qu\u00fd kh\u00e1ch quy\u1ebft \u0111\u1ecbnh \u0111\u1eb7t h\u00e0ng s\u1ed1 l\u01b0\u1ee3ng l\u1edbn; v\u00ec v\u1eady, h\u00e3y g\u1eedi cho ch\u00fang t\u00f4i th\u00f4ng s\u1ed1 t\u1ea3i v\u00e0 ch\u00fang t\u00f4i s\u1ebd t\u01b0 v\u1ea5n cho qu\u00fd kh\u00e1ch bi\u1ebft t\u1ed5 h\u1ee3p n\u00e0o l\u00e0 ph\u00f9 h\u1ee3p nh\u1ea5t. OMCH b\u00e1n c\u1ea3 c\u00e1c linh ki\u1ec7n ri\u00eang l\u1ebb l\u1eabn c\u00e1c b\u1ed9 k\u1ebft h\u1ee3p, b\u1edfi v\u00ec ch\u00ednh nh\u1edd s\u1ef1 k\u1ebft h\u1ee3p n\u00e0y m\u00e0 c\u00e1c b\u1ed9 ngu\u1ed3n song song m\u1edbi th\u1ef1c s\u1ef1 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3.<\/em><\/p>\n\n \n <div class=\"bp-cta-end\">\n <div class=\"bp-cta-end-title\"><span class=\"bp-cta-end-icon\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"m22 2-7 20-4-9-9-4Z\"\/><path d=\"M22 2 11 13\"\/><\/svg><\/span>Chuy\u1ec3n danh s\u00e1ch gh\u00e9p \u0111\u00f4i th\u00e0nh danh s\u00e1ch linh ki\u1ec7n<\/div>\n <div class=\"bp-cta-end-sub\">H\u00e3y cung c\u1ea5p th\u00f4ng tin v\u1ec1 t\u1ea3i tr\u1ecdng, y\u00eau c\u1ea7u v\u1ec1 th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c v\u00e0 chi\u1ec1u r\u1ed9ng thanh DIN m\u00e0 qu\u00fd kh\u00e1ch \u0111ang c\u00f3 \u2014 ch\u00fang t\u00f4i s\u1ebd l\u1ef1a ch\u1ecdn c\u00e1c thi\u1ebft b\u1ecb, b\u1ed9 c\u00e1ch ly v\u00e0 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ph\u00f9 h\u1ee3p v\u1edbi t\u1ee7 \u0111i\u1ec7n c\u1ee7a qu\u00fd kh\u00e1ch, \u0111\u1ed3ng th\u1eddi ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m m\u1eabu b\u1ed9 s\u1ea3n ph\u1ea9m n\u00e0y tr\u01b0\u1edbc khi qu\u00fd kh\u00e1ch \u0111\u1eb7t h\u00e0ng.<\/div>\n <a class=\"bp-cta-end-btn\" href=\"https:\/\/www.omch.com\/vi\/contact\/\" target=\"_self\">G\u1eedi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt h\u00e0ng h\u00f3a qua email<\/a>\n <\/div>\n\n <h2>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n <ol class=\"bd-refs\">\n <li>PULS. \u201cK\u1ebft n\u1ed1i song song v\u00e0 d\u1ef1 ph\u00f2ng ngu\u1ed3n \u0111i\u1ec7n \u2013 S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec?\u201d 2022. <a href=\"https:\/\/www.pulspower.com\/cam\/blog\/parallel-connection-and-redundancy-of-power-supplies-what-is-the-difference\/\">https:\/\/www.pulspower.com\/cam\/blog\/parallel-connection-and-redundancy-of-power-supplies-what-is-the-difference\/<\/a><\/li>\n <li>MEAN WELL Enterprises. \u201cCh\u1ee9c n\u0103ng d\u1ef1 ph\u00f2ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ed9 ngu\u1ed3n.\u201d 2020. <a href=\"https:\/\/www.meanwell.com\/newsInfo.aspx?c=5&i=847\">https:\/\/www.meanwell.com\/newsInfo.aspx?c=5&i=847<\/a><\/li>\n <li>MEAN WELL. \u201cC\u00e1c y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi k\u1ebft n\u1ed1i song song l\u00e0 g\u00ec? S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa k\u1ebft n\u1ed1i song song v\u00e0 k\u1ebft n\u1ed1i d\u1ef1 ph\u00f2ng l\u00e0 g\u00ec?\u201d (C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p d\u00e0nh cho nh\u00e0 ph\u00e2n ph\u1ed1i \u1ee7y quy\u1ec1n). <a href=\"https:\/\/meanwellpowersupplies.com\/technical-articles\/faq\/what-are-the-requirements-of-parallel-connections-what-are-the-differences-between-parallel-and-redundant\/\">https:\/\/meanwellpowersupplies.com\/technical-articles\/faq\/what-are-the-requirements-of-parallel-connections-what-are-the-differences-between-parallel-and-redundant\/<\/a><\/li>\n <li>DigiKey. \u201cC\u1ea5u h\u00ecnh \u0111\u00fang c\u00e1ch c\u00e1c b\u1ed9 ngu\u1ed3n song song \u0111\u1ec3 chia s\u1ebb d\u00f2ng t\u1ea3i, n\u1ebfu kh\u00f4ng s\u1ebd c\u00f3 nguy c\u01a1 h\u1ec7 th\u1ed1ng b\u1ecb h\u1ecfng.\u201d 2016. <a href=\"https:\/\/www.digikey.com\/en\/articles\/properly-configure-parallel-power-supplies\">https:\/\/www.digikey.com\/en\/articles\/properly-configure-parallel-power-supplies<\/a><\/li>\n <li>OMCH. \u201cD\u1ecbch v\u1ee5 l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m.\u201d <a href=\"https:\/\/www.omch.com\/vi\/product-selection\/\">https:\/\/www.omch.com\/product-selection\/<\/a><\/li>\n <li>OMCH. \u201cC\u00e1c linh ki\u1ec7n t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p.\u201d <a href=\"https:\/\/www.omch.com\/vi\/\">https:\/\/www.omch.com\/<\/a><\/li>\n <\/ol>\n <\/article>\n<\/div>\n\n<\/body><\/html>\n\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Ngu\u1ed3n \u0111i\u1ec7n n\u1ed1i song song: Ba c\u00e1ch an to\u00e0n \u0111\u1ec3 k\u1ebft h\u1ee3p hai ngu\u1ed3n \u0111i\u1ec7n nh\u1eb1m t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ho\u1eb7c \u0111\u1ea3m b\u1ea3o d\u1ef1 ph\u00f2ng. C\u00f3 th\u1ec3 n\u1ed1i song song c\u00e1c ngu\u1ed3n \u0111i\u1ec7n kh\u00f4ng? C\u00f3, nh\u01b0ng h\u1ea7u nh\u01b0 kh\u00f4ng bao gi\u1edd theo c\u00e1ch m\u00e0 m\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng th\u1eed \u0111\u1ea7u ti\u00ean. Vi\u1ec7c n\u1ed1i c\u00e1c c\u1ef1c d\u01b0\u01a1ng c\u1ee7a hai ngu\u1ed3n \u0111i\u1ec7n th\u00f4ng th\u01b0\u1eddng l\u1ea1i v\u1edbi nhau ch\u00ednh l\u00e0 h\u00e0nh \u0111\u1ed9ng duy nh\u1ea5t c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng c\u1ea3 hai. Tuy nhi\u00ean, vi\u1ec7c k\u1ebft h\u1ee3p hai ngu\u1ed3n \u0111i\u1ec7n m\u1ed9t c\u00e1ch an to\u00e0n l\u00e0 [\u2026]<\/p>","protected":false},"author":4,"featured_media":12280,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Power Supplies in Parallel: Safe Methods for Higher Current","_seopress_titles_desc":"Learn how to connect power supplies in parallel safely using current sharing, ORing and redundancy modules for higher current or backup power.","_seopress_robots_index":"","footnotes":""},"categories":[79],"tags":[],"class_list":["post-12281","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mmlblog"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/12281","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/comments?post=12281"}],"version-history":[{"count":1,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/12281\/revisions"}],"predecessor-version":[{"id":12287,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/12281\/revisions\/12287"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/media\/12280"}],"wp:attachment":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/media?parent=12281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/categories?post=12281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/tags?post=12281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":12281,"date":"2026-09-10T03:48:57","date_gmt":"2026-09-10T03:48:57","guid":{"rendered":"https:\/\/www.omch.com\/?p=12281"},"modified":"2026-09-10T03:48:58","modified_gmt":"2026-09-10T03:48:58","slug":"power-supplies-in-parallel","status":"publish","type":"post","link":"https:\/\/www.omch.com\/vi\/power-supplies-in-parallel\/","title":{"rendered":"K\u1ebft n\u1ed1i song song c\u00e1c b\u1ed9 ngu\u1ed3n: C\u00e1c ph\u01b0\u01a1ng ph\u00e1p an to\u00e0n \u0111\u1ec3 \u0111\u1ea1t d\u00f2ng \u0111i\u1ec7n cao h\u01a1n v\u00e0 \u0111\u1ea3m b\u1ea3o d\u1ef1 ph\u00f2ng"},"content":{"rendered":"\n\n \n \n Ngu\u1ed3n \u0111i\u1ec7n song song: Ba c\u00e1ch an to\u00e0n \u0111\u1ec3 k\u1ebft h\u1ee3p hai ngu\u1ed3n \u0111i\u1ec7n nh\u1eb1m t\u0103ng d\u00f2ng \u0111i\u1ec7n ho\u1eb7c \u0111\u1ea3m b\u1ea3o d\u1ef1 ph\u00f2ng<\/title>\n<\/head>\n<body>\n\n<div class=\"bd-post\">\n <style>\n \/* fonts: BLOG scope only \u2014 \u54c1\u724c Standard Blog CSS Header \u9010\u5b57\u7167\u6284 *\/\n @import url('https:\/\/fonts.googleapis.com\/css2?family=Manrope:wght@400;600;700&family=Roboto:wght@600;700&display=swap');\n\n .bd-post {\n font-family: \"Manrope\", sans-serif;\n font-size: 16px;\n font-weight: 400;\n line-height: 1.6;\n color: var(--text-primary);\n background: var(--body-bg);\n box-sizing: border-box;\n max-width: 100%;\n padding: 40px;\n \/* \u54c1\u724c header system palette\uff08\u9010\u5b57\u7167\u6284\uff09+ \u672c\u7bc7 plan \u89d2\u8272 token\uff08hex \u552f\u4e00\u6765\u6e90 = design-plan.md\uff09*\/\n --text-primary: #333333;\n --heading-ink: #000000;\n --text-secondary: #6E6E6E;\n --accent: #479DE2;\n --accent-deep: #2A76B4;\n --accent-hot: #FD9649;\n --body-bg: #FFFFFF;\n --inverse-bg: #1E1E1E;\n --inverse-text: #FFFFFF;\n --inverse-secondary: #B8B8B8;\n --card-fill: #FFFFFF;\n --card-border: #E0E0E0;\n --navy-bg: #0D3972;\n --navy-text: #FFFFFF;\n --navy-secondary: #C9D6E8;\n --btn-white: #FFFFFF;\n --btn-ink: #1E1E1E;\n \/* \u4e09\u5173\u7cfb\u5916\u8ddd token + \u4e24\u6863\u5185\u8ddd\uff08fixed standard\uff09 *\/\n --gap-attach: 16px;\n --gap-normal: 32px;\n --gap-section: 48px;\n --pad-compact: 16px;\n --pad-standard: 24px;\n \/* \u5355\u680f *\/\n --prose-width: 720px;\n }\n .bd-post a { overflow-wrap: anywhere; word-break: break-word; }\n .bd-post p, .bd-post li { overflow-wrap: break-word; }\n \/* \u951a\u70b9\u8bb8\u53ef\u8868\uff1a\u89c6\u89c9\u5c5e\u6027\u53ea\u5141\u8bb8 p a \/ li a \/ blockquote a \/ td a *\/\n .bd-post p a, .bd-post li a, .bd-post blockquote a, .bd-post td a { color: var(--accent-deep); text-decoration: underline; text-underline-offset: 3px; }\n .bd-post .bd-post-article { max-width: var(--prose-width); margin: 0 auto; }\n\n \/* \u6807\u9898\uff08\u54c1\u724c header LAW\uff09*\/\n .bd-post h2 { font-family: \"Roboto\", sans-serif; font-weight: 700; font-size: 34px; line-height: 1.2; color: var(--heading-ink); margin: 48px 0 16px; transform-origin: left; }\n .bd-post h3 { font-family: \"Roboto\", sans-serif; font-weight: 700; font-size: 24px; line-height: 1.25; color: var(--heading-ink); margin: 32px 0 12px; }\n\n \/* PROSE SPACING \u2014 fixed standard *\/\n .bd-post p { margin: 0 0 1em; }\n .bd-post ul, .bd-post ol { margin: 0 0 1em; padding-left: 1.5em; }\n .bd-post li { margin-bottom: 0.5em; }\n .bd-post strong { font-weight: 700; }\n\n \/* box-sizing \u5141\u8bb8 catch-all\uff1bbox-model \u4e00\u5f8b\u5177\u4f53\u7c7b *\/\n .bd-post [class*=\"bp-\"], .bd-post [class*=\"rich-\"] { box-sizing: border-box; }\n\n \/* ============ BP-1 \u56db\u8def\u5224\u5b9a\u56fe\uff08navy \u7b7e\u540d\u5757 \/ \u8bb0\u5fc6\u94a9\u5b50\uff09 ============ *\/\n .bd-post .bp-b1-judge {\n background: var(--navy-bg);\n border-radius: 10px;\n padding: var(--pad-standard);\n display: grid;\n grid-template-columns: repeat(4, 1fr);\n column-gap: 24px;\n row-gap: 16px;\n margin: var(--gap-section) 0;\n }\n .bd-post .bp-b1-lane { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; min-width: 0; }\n .bd-post .bp-b1-lane-dead { outline: 1px dashed var(--accent-hot); outline-offset: 6px; border-radius: 10px; padding: 4px 8px 8px; }\n .bd-post .bp-b1-chip {\n width: 44px; height: 44px; border-radius: 50%;\n display: flex; align-items: center; justify-content: center; flex: 0 0 auto;\n }\n .bd-post .bp-b1-chip-live { background: var(--btn-white); }\n .bd-post .bp-b1-chip-live svg { color: var(--accent-deep); width: 20px; height: 20px; }\n .bd-post .bp-b1-chip-dead { background: var(--accent-hot); }\n .bd-post .bp-b1-chip-dead svg { color: var(--btn-ink); width: 20px; height: 20px; }\n .bd-post .bp-b1-lane-title { color: var(--navy-text); font-size: 15px; font-weight: 700; line-height: 1.35; }\n .bd-post .bp-b1-lane-dead .bp-b1-lane-title { text-decoration: line-through; }\n .bd-post .bp-b1-lane-sub { color: var(--navy-secondary); font-size: 13px; line-height: 1.45; }\n\n \/* ============ BP-2 \u5197\u4f59\u7b97\u672f\u5361 ============ *\/\n .bd-post .bp-b2-ratio {\n background: var(--card-fill);\n border: 1px solid var(--card-border);\n border-radius: 10px;\n padding: var(--pad-standard);\n display: grid;\n grid-template-columns: repeat(2, minmax(0, 1fr));\n column-gap: 24px;\n row-gap: 16px;\n margin: var(--gap-normal) 0;\n }\n .bd-post .bp-b2-col { display: flex; flex-direction: column; gap: 8px; min-width: 0; }\n .bd-post .bp-b2-head { color: var(--text-secondary); font-size: 13px; font-weight: 700; }\n .bd-post .bp-b2-row { display: flex; gap: 8px; align-items: baseline; }\n .bd-post .bp-b2-num { color: var(--accent-deep); font-weight: 700; font-size: 14.5px; flex: 0 0 auto; }\n .bd-post .bp-b2-desc { color: var(--text-primary); font-size: 14.5px; line-height: 1.5; }\n\n \/* ============ BP-3 L0 \u5f15\u8bed\u5757 ============ *\/\n .bd-post .bp-b3-pin {\n margin: var(--gap-normal) 0;\n padding: 0 0 0 20px;\n border-left: 4px solid var(--accent-deep);\n color: var(--heading-ink);\n font-size: 20px;\n line-height: 1.45;\n font-weight: 600;\n }\n\n \/* ============ BP-cta-end\uff08\u9875\u811a\u6df1\u9762\u677f\u8f6c\u5316\uff09 ============ *\/\n .bd-post .bp-cta-end {\n background: var(--inverse-bg);\n border-radius: 10px;\n padding: var(--pad-standard);\n display: flex;\n flex-direction: column;\n align-items: center;\n gap: 14px;\n text-align: center;\n margin: var(--gap-section) 0;\n }\n .bd-post .bp-cta-end-title {\n font-family: \"Roboto\", sans-serif;\n color: var(--inverse-text);\n font-size: 24px;\n font-weight: 700;\n line-height: 1.25;\n margin: 0;\n }\n .bd-post .bp-cta-end-icon { display: inline-flex; vertical-align: -0.2em; margin-right: 10px; }\n .bd-post .bp-cta-end-icon svg { color: var(--accent); width: 24px; height: 24px; }\n .bd-post .bp-cta-end-sub { color: var(--inverse-secondary); font-size: 15px; line-height: 1.55; max-width: 560px; margin: 0; }\n .bd-post .bp-cta-end-btn {\n display: inline-block;\n background: var(--accent-hot);\n color: var(--btn-ink);\n font-weight: 600;\n font-size: 16px;\n line-height: 1.2;\n padding: 12px 26px;\n border-radius: 8px;\n text-decoration: none;\n transition: background .2s ease-out, color .2s ease-out, transform .2s ease-out;\n }\n .bd-post .bp-cta-end-btn:hover {\n background: var(--btn-white);\n color: var(--accent-deep);\n transform: translateY(-2px);\n }\n\n \/* ============ RICH \u6e32\u67d3 ============ *\/\n \/* Callout-Single Warning\uff08\u4f4e tier\uff1a\u767d\u5361 + \u5168\u8fb9\u6846 + \u6df1\u84dd\u5de6\u6761 + \u5757\u7ea7\u56fe\u6807\uff09 *\/\n .bd-post .rich-callout {\n background: var(--card-fill);\n border: 1px solid var(--card-border);\n border-left: 4px solid var(--accent-deep);\n border-radius: 8px;\n padding: var(--pad-compact);\n display: flex;\n align-items: flex-start;\n gap: 12px;\n margin: var(--gap-attach) 0 var(--gap-normal);\n }\n .bd-post .rich-callout .rich-callout-icon { flex: 0 0 auto; display: flex; align-items: center; }\n .bd-post .rich-callout .rich-callout-icon svg { color: var(--accent-deep); width: 20px; height: 20px; }\n .bd-post .rich-callout .rich-callout-body { color: var(--text-primary); font-size: 15px; line-height: 1.55; margin: 0; }\n\n \/* ComparisonTable\uff08\u00a73 \u573a\u666f\u77e9\u9635\uff09 *\/\n .bd-post .table-wrapper { overflow-x: auto; margin: 0 0 1em; }\n .bd-post .rich-table { width: 100%; border-collapse: collapse; margin: 0; }\n .bd-post .rich-table-title { color: var(--heading-ink); font-family: \"Roboto\", sans-serif; font-weight: 700; font-size: 18px; line-height: 1.3; margin: 0 0 12px; }\n .bd-post .rich-table th {\n color: var(--text-primary);\n font-weight: 700;\n font-size: 15px;\n text-align: left;\n background: var(--card-fill);\n border-bottom: 2px solid var(--accent-deep);\n padding: 12px 14px;\n }\n .bd-post .rich-table td {\n color: var(--text-primary);\n font-size: 15px;\n line-height: 1.5;\n border-bottom: 1px solid var(--card-border);\n padding: 12px 14px;\n vertical-align: top;\n }\n\n \/* Card-Checklist\uff08\u00a75 \u7ec4\u5408\u6e05\u5355\uff09 *\/\n .bd-post .rich-checklist {\n background: var(--card-fill);\n border: 1px solid var(--card-border);\n border-radius: 10px;\n padding: var(--pad-standard);\n margin: var(--gap-normal) 0;\n }\n .bd-post .rich-checklist-title {\n color: var(--heading-ink);\n font-family: \"Roboto\", sans-serif;\n font-weight: 700;\n font-size: 18px;\n line-height: 1.3;\n margin: 0 0 16px;\n }\n .bd-post .rich-checklist-icon { display: inline-flex; vertical-align: -0.2em; margin-right: 8px; }\n .bd-post .rich-checklist-icon svg { color: var(--accent-deep); width: 20px; height: 20px; }\n .bd-post .rich-checklist-item { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px; }\n .bd-post .rich-checklist-item:last-child { margin-bottom: 0; }\n .bd-post .rich-checklist-check {\n flex: 0 0 auto;\n width: 20px; height: 20px;\n border: 1px solid var(--card-border);\n border-radius: 50%;\n display: flex; align-items: center; justify-content: center;\n margin-top: 1px;\n }\n .bd-post .rich-checklist-check svg { color: var(--accent-deep); width: 12px; height: 12px; }\n .bd-post .rich-checklist-text { color: var(--text-primary); font-size: 14.5px; line-height: 1.5; margin: 0; }\n\n \/* References\uff08.bd-refs \u89c4\u8303\uff1a14px \/ #6E6E6E \/ \u94fe\u63a5 #2A76B4\uff09 *\/\n .bd-post .bd-refs { font-size: 14px; color: var(--text-secondary); }\n .bd-post .bd-refs li { margin-bottom: 0.5em; }\n\n \/* ============ SANCTIONED MOTION ============ *\/\n @media (prefers-reduced-motion: no-preference) {\n .bd-post h2 { transition: color .2s ease-out, transform .2s ease-out; }\n .bd-post h2:hover { color: var(--accent-deep); transform: scale(1.02); }\n .bd-post .bp-b2-ratio { transition: transform .2s ease-out, box-shadow .2s ease-out; }\n .bd-post .bp-b2-ratio:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0,0,0,0.08); }\n @supports (animation-timeline: view()) {\n .bd-post .bd-reveal { animation: bd-fade-in linear both; animation-timeline: view(); animation-range: entry 0% entry 35%; }\n @keyframes bd-fade-in { from { opacity: 0; } to { opacity: 1; } }\n }\n }\n\n @media (max-width: 768px) {\n .bd-post { padding: 16px; }\n .bd-post h2 { font-size: 26px; margin-top: 32px; }\n .bd-post h3 { font-size: 20px; margin-top: 24px; }\n .bd-post .bp-b1-judge { grid-template-columns: 1fr; row-gap: 18px; }\n .bd-post .bp-b1-lane { flex-direction: row; align-items: center; }\n .bd-post .bp-b1-lane-dead { padding: 8px; }\n .bd-post .bp-b1-lane-text { min-width: 0; }\n .bd-post .bp-b1-chip { width: 28px; height: 28px; }\n .bd-post .bp-b1-chip svg { width: 16px; height: 16px; }\n .bd-post .bp-b2-ratio { grid-template-columns: 1fr; }\n .bd-post .bp-cta-end-title { font-size: 20px; }\n .bd-post .bp-cta-end-icon svg { width: 20px; height: 20px; }\n }\n <\/style>\n <article class=\"bd-post-article\">\n <p>C\u00f3 th\u1ec3 n\u1ed1i c\u00e1c b\u1ed9 ngu\u1ed3n song song v\u1edbi nhau kh\u00f4ng? C\u00f3, nh\u01b0ng h\u1ea7u nh\u01b0 kh\u00f4ng bao gi\u1edd theo c\u00e1ch m\u00e0 m\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng th\u1eed \u0111\u1ea7u ti\u00ean. Vi\u1ec7c n\u1ed1i c\u00e1c c\u1ef1c d\u01b0\u01a1ng c\u1ee7a hai b\u1ed9 ngu\u1ed3n th\u00f4ng th\u01b0\u1eddng v\u1edbi nhau ch\u00ednh l\u00e0 h\u00e0nh \u0111\u1ed9ng duy nh\u1ea5t c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng c\u1ea3 hai. Tuy nhi\u00ean, vi\u1ec7c k\u1ebft h\u1ee3p hai b\u1ed9 ngu\u1ed3n m\u1ed9t c\u00e1ch an to\u00e0n l\u00e0 c\u00f4ng vi\u1ec7c th\u01b0\u1eddng th\u1ea5y t\u1ea1i c\u00e1c x\u01b0\u1edfng s\u1eeda ch\u1eefa, b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t, v\u00ec v\u1eady b\u1ea1n n\u00ean n\u1eafm r\u00f5 c\u00e1c quy t\u1eafc tr\u01b0\u1edbc khi ch\u1ea1m v\u00e0o b\u1ea5t k\u1ef3 c\u1ef1c n\u1ed1i n\u00e0o.<\/p>\n\n <img decoding=\"async\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/09\/DIN-rail-supplies.webp\" style=\"width: 512px; height: 384px; max-width: 100%; object-fit: cover; border-radius: 12px; margin: 30px auto; display: block; box-shadow: 10px 10px 60px 0px rgba(210, 221, 224, 0.35); transition: all 0.3s ease; cursor: pointer;\" onmouseover=\"this.style.transform='translateY(-5px) scale(1.03)'; this.style.boxShadow='15px 25px 80px 0px rgba(210, 221, 224, 0.45)'\" onmouseout=\"this.style.transform='translateY(0) scale(1)'; this.style.boxShadow='10px 10px 60px 0px rgba(210, 221, 224, 0.35)'\"> \n\n <h2>C\u00f3 th\u1ec3 n\u1ed1i c\u00e1c b\u1ed9 ngu\u1ed3n theo ch\u1ebf \u0111\u1ed9 song song kh\u00f4ng? T\u1ea1i sao c\u00e2u tr\u1ea3 l\u1eddi hi\u1ec3n nhi\u00ean l\u1ea1i l\u00e0 \u201cKh\u00f4ng\u201d?<\/h2>\n <p>K\u1ebft n\u1ed1i c\u00e1c c\u1ef1c + v\u00e0 \u2212 c\u1ee7a hai ngu\u1ed3n \u0111i\u1ec7n m\u1ed9t chi\u1ec1u th\u00f4ng th\u01b0\u1eddng v\u1edbi m\u1ed9t t\u1ea3i, v\u00e0 ngu\u1ed3n c\u00f3 \u0111i\u1ec7n \u00e1p cao h\u01a1n s\u1ebd l\u00e0 ngu\u1ed3n ch\u00ednh. M\u1ed9t b\u1ed9 ngu\u1ed3n chuy\u1ec3n m\u1ea1ch \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p c\u1ed1 \u0111\u1ecbnh: b\u1ed9 A duy tr\u00ec 24,0 V, b\u1ed9 B duy tr\u00ec 24,2 V. B\u1ed9 B kh\u00f4ng th\u1ec3 \u0111\u1ea9y ng\u01b0\u1ee3c l\u1ea1i \u0111\u01b0\u1eddng bus m\u00e0 b\u1ed9 A \u0111ang duy tr\u00ec, do \u0111\u00f3 n\u00f3 s\u1ebd k\u00edch ho\u1ea1t c\u01a1 ch\u1ebf b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng, ho\u1eb7c t\u1ec7 h\u01a1n, h\u00fat d\u00f2ng \u0111i\u1ec7n t\u1eeb b\u1ed9 A. Hai ngu\u1ed3n \u0111i\u1ec1u ch\u1ec9nh song song \u0111\u01a1n gi\u1ea3n l\u00e0 s\u1ebd xung \u0111\u1ed9t v\u1edbi nhau: m\u1ed7i b\u1ed9 \u0111\u1ecdc gi\u00e1 tr\u1ecb tr\u00ean \u0111\u01b0\u1eddng bus, nh\u1eadn th\u1ea5y gi\u00e1 tr\u1ecb sai v\u00e0 \u0111i\u1ec1u ch\u1ec9nh theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i.<\/p>\n <p>Thi\u1ebft b\u1ecb c\u00f3 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra cao nh\u1ea5t t\u1ea5t nhi\u00ean s\u1ebd cung c\u1ea5p d\u00f2ng \u0111i\u1ec7n cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u1ebfn gi\u1edbi h\u1ea1n c\u1ee7a ch\u00ednh n\u00f3, sau \u0111\u00f3 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng, khi\u1ebfn h\u1ec7 th\u1ed1ng thi\u1ebfu h\u1ee5t d\u00f2ng \u0111i\u1ec7n c\u1ea7n thi\u1ebft (<a href=\"https:\/\/www.digikey.com\/en\/articles\/properly-configure-parallel-power-supplies\">DigiKey<\/a>, 2016). Ch\u1ec9 c\u1ea7n s\u1ef1 ch\u00eanh l\u1ec7ch v\u00e0i ch\u1ee5c miliv\u00f4n l\u00e0 \u0111\u1ee7 \u0111\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y, v\u00e0 c\u00e1c b\u00e1o c\u00e1o th\u1ef1c t\u1ebf ghi nh\u1eadn c\u00e1c tr\u01b0\u1eddng h\u1ee3p t\u1eeb vi\u1ec7c ng\u1eaft m\u1ea1ch b\u1ea3o v\u1ec7 l\u1eb7p \u0111i l\u1eb7p l\u1ea1i cho \u0111\u1ebfn h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb.<\/p>\n <p>\u1ede \u0111\u00e2y, v\u00ed d\u1ee5 v\u1ec1 pin kh\u00f4ng ph\u00f9 h\u1ee3p. M\u1ed9t t\u1ebf b\u00e0o pin \u0111\u00e3 c\u1ea1n ki\u1ec7t s\u1ebd c\u00f3 \u0111i\u1ec7n \u00e1p gi\u1ea3m xu\u1ed1ng v\u00e0 nh\u1eadn \u0111i\u1ec7n t\u00edch t\u1eeb m\u1ed9t t\u1ebf b\u00e0o pin c\u00f2n t\u1ed1t h\u01a1n; trong khi \u0111\u00f3, b\u1ed9 ngu\u1ed3n chuy\u1ec3n m\u1ea1ch l\u1ea1i ch\u1ee7 \u0111\u1ed9ng duy tr\u00ec m\u1ee9c \u0111i\u1ec7n \u00e1p c\u00e0i \u0111\u1eb7t. V\u00e0 n\u1ebfu b\u1ea1n t\u00ecm ki\u1ebfm c\u00e1c c\u00f4ng th\u1ee9c v\u1ec1 m\u1ea1ch n\u1ed1i ti\u1ebfp so v\u1edbi m\u1ea1ch song song, vi\u1ec7c n\u1ed1i song song c\u00e1c b\u1ed9 UPS, ho\u1eb7c c\u00e1c ch\u1ebf \u0111\u1ed9 k\u00eanh b\u00ean trong c\u1ee7a b\u1ed9 ngu\u1ed3n th\u00ed nghi\u1ec7m: \u0111\u00f3 l\u00e0 nh\u1eefng ch\u1ee7 \u0111\u1ec1 kh\u00e1c; b\u00e0i vi\u1ebft n\u00e0y n\u00f3i v\u1ec1 vi\u1ec7c k\u1ebft h\u1ee3p c\u00e1c \u0111\u1ea7u ra DC.<\/p>\n\n \n <div class=\"rich-callout\">\n <span class=\"rich-callout-icon\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"m21.73 18-8-14a2 2 0 0 0-3.48 0l-8 14A2 2 0 0 0 4 21h16a2 2 0 0 0 1.73-3Z\"\/><path d=\"M12 9v4\"\/><path d=\"M12 17h.01\"\/><\/svg><\/span>\n <div class=\"rich-callout-body\">Kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i song song tr\u1ef1c ti\u1ebfp hai ngu\u1ed3n \u0111i\u1ec7n th\u00f4ng th\u01b0\u1eddng (+ v\u1edbi +, \u2212 v\u1edbi \u2212) tr\u1eeb khi b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00eau r\u00f5 r\u1eb1ng m\u1eabu s\u1ea3n ph\u1ea9m \u0111\u00f3 h\u1ed7 tr\u1ee3 ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng song song. Ch\u1ec9 c\u1ea7n ch\u00eanh l\u1ec7ch \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra v\u00e0i ch\u1ee5c miliv\u00f4n l\u00e0 \u0111\u1ee7 \u0111\u1ec3 khi\u1ebfn m\u1ed9t thi\u1ebft b\u1ecb ph\u1ea3i g\u00e1nh to\u00e0n b\u1ed9 t\u1ea3i trong khi thi\u1ebft b\u1ecb c\u00f2n l\u1ea1i ng\u1eebng ho\u1ea1t \u0111\u1ed9ng \u2014 ho\u1eb7c d\u1eabn d\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c tr\u1edf l\u1ea1i thi\u1ebft b\u1ecb b\u1ecb h\u1ecfng.<\/div>\n <\/div>\n\n <p>\u0110\u1ed1i v\u1edbi ph\u1ea7n l\u1edbn \u0111\u1ed9c gi\u1ea3, c\u00e2u h\u1ecfi quan tr\u1ecdng kh\u00f4ng ph\u1ea3i l\u00e0 \u201ct\u00f4i c\u00f3 th\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c kh\u00f4ng\u201d m\u00e0 l\u00e0 \u201cc\u00e1ch n\u00e0o an to\u00e0n \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau c\u1ee7a m\u00ecnh\u201d. Hai trong ba c\u00e2u tr\u1ea3 l\u1eddi d\u01b0\u1edbi \u0111\u00e2y h\u1ea7u nh\u01b0 kh\u00f4ng t\u1ed1n k\u00e9m g\u00ec.<\/p>\n\n <h2>Ba c\u00e1ch an to\u00e0n \u0111\u1ec3 k\u1ebft n\u1ed1i song song c\u00e1c b\u1ed9 ngu\u1ed3n \u2014 v\u00e0 m\u1ed9t c\u00e1ch d\u1eabn \u0111\u1ebfn th\u1ea5t b\u1ea1i<\/h2>\n <p>Tr\u01b0\u1edbc h\u1ebft, h\u00e3y ph\u00e2n bi\u1ec7t hai m\u1ee5c ti\u00eau th\u01b0\u1eddng b\u1ecb nh\u1ea7m l\u1eabn v\u1edbi nhau. <strong>M\u1edbi h\u01a1n<\/strong> c\u00f3 ngh\u0129a l\u00e0 t\u1ea3i th\u1ef1c s\u1ef1 v\u01b0\u1ee3t qu\u00e1 kh\u1ea3 n\u0103ng cung c\u1ea5p c\u1ee7a m\u1ed9t ngu\u1ed3n v\u00e0 c\u00e1c thi\u1ebft b\u1ecb s\u1ebd chia s\u1ebb t\u1ea3i \u0111\u00f3. <strong>D\u1ef1 ph\u00f2ng<\/strong> c\u00f3 ngh\u0129a l\u00e0 t\u1ea3i c\u00f3 th\u1ec3 n\u1eb1m g\u1ecdn trong m\u1ed9t \u0111\u01a1n v\u1ecb, v\u00e0 \u0111\u01a1n v\u1ecb th\u1ee9 hai s\u1ebd \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng v\u1eabn ho\u1ea1t \u0111\u1ed9ng n\u1ebfu \u0111\u01a1n v\u1ecb \u0111\u1ea7u ti\u00ean g\u1eb7p s\u1ef1 c\u1ed1. C\u00e1c l\u1ed9 tr\u00ecnh c\u00f3 ph\u1ea7n tr\u00f9ng l\u1eb7p, nh\u01b0ng c\u00e1c l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m l\u1ea1i kh\u00e1c nhau: t\u00ednh d\u1ef1 ph\u00f2ng ch\u00ednh l\u00e0 l\u00fac vi\u1ec7c t\u00e1ch bi\u1ec7t ph\u1ea7n c\u1ee9ng ph\u00e1t huy t\u00e1c d\u1ee5ng.<\/p>\n <p><strong>Ng\u00f5 c\u1ee5t: song song c\u1ee9ng tr\u1ef1c ti\u1ebfp.<\/strong> \u0110\u00e3 \u0111\u1ec1 c\u1eadp \u1edf tr\u00ean. C\u00e1c v\u1eadt t\u01b0 m\u00e0 <em>l\u00e0<\/em> C\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ea1y song song l\u00e0 h\u1ee3p l\u1ec7; \u0111\u00f3 l\u00e0 Ph\u01b0\u01a1ng \u00e1n 3. M\u1ed9t ngu\u1ed3n c\u1ea5p th\u00f4ng th\u01b0\u1eddng kh\u00f4ng c\u00f3 h\u1ed7 tr\u1ee3 ch\u1ea1y song song \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 th\u00ec kh\u00f4ng th\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n ch\u1ec9 b\u1eb1ng c\u00e1ch c\u1ed1 g\u1eafng nhi\u1ec1u h\u01a1n.<\/p>\n <p><strong>Ph\u01b0\u01a1ng \u00e1n 1 \u2014 Chia t\u1ea3i thay v\u00ec chia d\u00f2ng \u0111i\u1ec7n.<\/strong> Khi hai thi\u1ebft b\u1ecb nh\u1ecf h\u01a1n thay th\u1ebf cho m\u1ed9t thi\u1ebft b\u1ecb l\u1edbn h\u01a1n b\u1ecb h\u1ecfng, gi\u1ea3i ph\u00e1p an to\u00e0n v\u00e0 ti\u1ebft ki\u1ec7m nh\u1ea5t th\u01b0\u1eddng l\u00e0 kh\u00f4ng n\u1ed1i song song: n\u1ed1i c\u00e1c c\u1ef1c \u00e2m l\u1ea1i v\u1edbi nhau \u0111\u1ec3 t\u1ea1o \u0111i\u1ec3m tham chi\u1ebfu chung v\u00e0 c\u1ea5p m\u1ed9t n\u1eeda t\u1ea3i t\u1eeb m\u1ed7i c\u1ef1c d\u01b0\u01a1ng. Kh\u00f4ng c\u1ea7n linh ki\u1ec7n b\u1ed5 sung, kh\u00f4ng c\u00f3 d\u00f2ng \u0111i\u1ec7n tu\u1ea7n ho\u00e0n, v\u00e0 c\u00f3 th\u1ec3 b\u1ea3o tr\u00ec b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb n\u00e0o m\u00e0 kh\u00f4ng c\u1ea7n ng\u1eaft n\u1eeda t\u1ea3i c\u00f2n l\u1ea1i. \u0110i\u1ec3m c\u1ea7n l\u01b0u \u00fd: t\u1ea3i c\u1ee7a b\u1ea1n ph\u1ea3i \u0111\u01b0\u1ee3c chia r\u00f5 r\u00e0ng th\u00e0nh, v\u00ed d\u1ee5 nh\u01b0, hai khu v\u1ef1c, hai \u0111\u1ed9ng c\u01a1 ho\u1eb7c hai nh\u00f3m thi\u1ebft b\u1ecb.<\/p>\n <p><strong>Ph\u01b0\u01a1ng \u00e1n 2 \u2014 T\u00e1ch ngu\u1ed3n ra b\u1eb1ng \u0111i-\u1ed1t.<\/strong> L\u1eafp m\u1ed9t \u0111i-\u1ed1t c\u00f4ng su\u1ea5t v\u00e0o \u0111\u01b0\u1eddng d\u00e2y + c\u1ee7a m\u1ed7i b\u1ed9 ngu\u1ed3n tr\u01b0\u1edbc thanh d\u1eabn chung, \u0111\u1ec3 d\u00f2ng \u0111i\u1ec7n ch\u1ec9 ch\u1ea3y ra kh\u1ecfi thi\u1ebft b\u1ecb, kh\u00f4ng bao gi\u1edd ch\u1ea3y ng\u01b0\u1ee3c tr\u1edf l\u1ea1i. N\u1ebfu m\u1ed9t thi\u1ebft b\u1ecb b\u1ecb h\u1ecfng v\u1edbi \u0111\u1ea7u ra b\u1ecb \u0111o\u1ea3n m\u1ea1ch, \u0111i-\u1ed1t c\u1ee7a n\u00f3 s\u1ebd ng\u0103n kh\u00f4ng cho thi\u1ebft b\u1ecb c\u00f2n ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed5 d\u00f2ng v\u00e0o \u0111i\u1ec3m s\u1ef1 c\u1ed1. N\u00ean s\u1eed d\u1ee5ng lo\u1ea1i \u0111i-\u1ed1t Schottky \u0111\u1ec3 c\u00f3 \u0111i\u1ec7n \u00e1p s\u1ee5t gi\u1ea3m thu\u1eadn th\u1ea5p h\u01a1n v\u00e0 ch\u1ecdn lo\u1ea1i c\u00f3 \u0111\u1ecbnh m\u1ee9c \u00edt nh\u1ea5t g\u1ea5p 1,5 l\u1ea7n \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n d\u1ef1 ki\u1ebfn cho m\u1ed7i thi\u1ebft b\u1ecb. S\u1ef1 s\u1ee5t \u00e1p qua c\u00e1c \u0111i-\u1ed1t kho\u1ea3ng 0,3\u20130,5 V, con s\u1ed1 n\u00e0y \u0111\u00e1ng k\u1ec3 tr\u00ean \u0111\u01b0\u1eddng ngu\u1ed3n 5 V nh\u01b0ng c\u00f3 th\u1ec3 b\u1ecf qua tr\u00ean \u0111\u01b0\u1eddng ngu\u1ed3n 24 V. C\u00e0i \u0111\u1eb7t \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra c\u1ee7a c\u1ea3 hai b\u1ed9 ngu\u1ed3n g\u1ea7n nh\u01b0 b\u1eb1ng nhau v\u00e0 d\u1ef1 ki\u1ebfn t\u1ef7 l\u1ec7 ph\u00e2n chia kh\u00f4ng \u0111\u1ec1u: t\u1ef7 l\u1ec7 chia 40:60 l\u00e0 th\u1ef1c t\u1ebf v\u00e0 ph\u00f9 h\u1ee3p cho m\u1ee5c \u0111\u00edch d\u1ef1 ph\u00f2ng, trong khi t\u1ef7 l\u1ec7 chia \u0111\u1ec1u 50:50 kh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c theo c\u00e1ch n\u00e0y (<a href=\"https:\/\/www.pulspower.com\/cam\/blog\/parallel-connection-and-redundancy-of-power-supplies-what-is-the-difference\/\">PULS<\/a>, 2022). Khi ho\u1ea1t \u0111\u1ed9ng \u1edf d\u00f2ng \u0111i\u1ec7n th\u1ef1c t\u1ebf, c\u00e1c \u0111i-\u1ed1t s\u1ebd n\u00f3ng l\u00ean. H\u00e3y l\u1eafp ch\u00fang l\u00ean b\u1ed9 t\u1ea3n nhi\u1ec7t ho\u1eb7c t\u1ea5m kim lo\u1ea1i, kh\u00f4ng n\u00ean b\u1ecdc ch\u00fang trong d\u00e2y c\u00e1p b\u1eb1ng m\u00e0ng co.<\/p>\n <p><strong>Ph\u01b0\u01a1ng \u00e1n 3 \u2014 S\u1eed d\u1ee5ng ph\u1ea7n c\u1ee9ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 chia s\u1ebb.<\/strong> C\u00e1c danh m\u1ee5c s\u1ea3n ph\u1ea9m DIN-rail c\u00f4ng nghi\u1ec7p ph\u00e2n lo\u1ea1i c\u00e1c b\u1ed9 ngu\u1ed3n th\u00e0nh c\u00e1c thi\u1ebft b\u1ecb th\u00f4ng th\u01b0\u1eddng v\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng song song. C\u00e1c m\u1eabu c\u00f3 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng song song \u0111\u01b0\u1ee3c trang b\u1ecb t\u00ednh n\u0103ng chia s\u1ebb d\u00f2ng \u0111i\u1ec7n: c\u00e1c \u0111\u1ea7u n\u1ed1i CS\/share, li\u00ean k\u1ebft chia s\u1ebb droop, ho\u1eb7c ghi r\u00f5 \u201cho\u1ea1t \u0111\u1ed9ng song song l\u00ean \u0111\u1ebfn N thi\u1ebft b\u1ecb\u201d. C\u00e1c m\u00f4-\u0111un d\u1ef1 ph\u00f2ng \u0111\u01b0\u1ee3c \u0111\u1eb7t gi\u1eefa hai ho\u1eb7c nhi\u1ec1u b\u1ed9 ngu\u1ed3n v\u00e0 \u0111\u01b0\u1eddng bus, gi\u00fap c\u00e1ch ly ch\u00fang v\u1edbi nhau v\u00e0 b\u1ed5 sung m\u1ed9t ti\u1ebfp \u0111i\u1ec3m r\u01a1le DC-OK \u0111\u1ec3 gi\u00e1m s\u00e1t; c\u00e1c m\u00f4-\u0111un DIN hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng MOSFET thay v\u00ec \u0111i-\u1ed1t \u0111\u1ec3 gi\u1ea3m nhi\u1ec7t v\u00e0 t\u1ed5n th\u1ea5t \u0111i\u1ec7n \u00e1p (d\u00f2ng s\u1ea3n ph\u1ea9m DRDN20\/40 c\u1ee7a MEAN WELL h\u1ed7 tr\u1ee3 d\u1ef1 ph\u00f2ng 1+1 v\u00e0 1+N \u1edf m\u1ee9c 20 A ho\u1eb7c 40 A v\u1edbi hai ti\u1ebfp \u0111i\u1ec3m DC-OK) (<a href=\"https:\/\/www.meanwell.com\/newsInfo.aspx?c=5&i=847\">C\u00d3 \u00dd T\u1ed0T<\/a>, 2020). Ph\u01b0\u01a1ng \u00e1n n\u00e0y t\u1ed1n chi ph\u00ed v\u00e0 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf to\u00e0n di\u1ec7n t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i; ph\u1ea7n ti\u1ebfp theo s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1ch l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng \u00e1n n\u00e0y.<\/p>\n\n \n <div class=\"bp-b1-judge bd-reveal\">\n <div class=\"bp-b1-lane bp-b1-lane-dead\">\n <span class=\"bp-b1-chip bp-b1-chip-dead\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M18 6 6 18\"\/><path d=\"m6 6 12 12\"\/><\/svg><\/span>\n <span class=\"bp-b1-lane-text\">\n <span class=\"bp-b1-lane-title\">Song song c\u1ee9ng<\/span>\n <span class=\"bp-b1-lane-sub\">Hai ng\u01b0\u1eddi ch\u01a1i b\u00ecnh th\u01b0\u1eddng, m\u1ed9t chi\u1ebfc xe bu\u00fdt \u2014 ng\u01b0\u1eddi n\u00e0o cao h\u01a1n s\u1ebd th\u1eafng cho \u0111\u1ebfn khi m\u1ed9t trong hai ng\u01b0\u1eddi b\u1ecf cu\u1ed9c.<\/span>\n <\/span>\n <\/div>\n <div class=\"bp-b1-lane\">\n <span class=\"bp-b1-chip bp-b1-chip-live\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span>\n <span class=\"bp-b1-lane-text\">\n <span class=\"bp-b1-lane-title\">Chia nh\u1ecf t\u1ea3i tr\u1ecdng<\/span>\n <span class=\"bp-b1-lane-sub\">C\u1ef1c \u00e2m chung; m\u1ed7i thi\u1ebft b\u1ecb c\u1ea5p ngu\u1ed3n cho m\u1ed9t n\u1eeda.<\/span>\n <\/span>\n <\/div>\n <div class=\"bp-b1-lane\">\n <span class=\"bp-b1-chip bp-b1-chip-live\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span>\n <span class=\"bp-b1-lane-text\">\n <span class=\"bp-b1-lane-title\">T\u00e1ch ngu\u1ed3n b\u1eb1ng \u0111i\u1ed1t<\/span>\n <span class=\"bp-b1-lane-sub\">M\u1ed7i \u0111\u01b0\u1eddng + c\u00f3 m\u1ed9t \u0111i\u1ed1t Schottky, s\u1ee5t \u00e1p 0,3\u20130,5 V.<\/span>\n <\/span>\n <\/div>\n <div class=\"bp-b1-lane\">\n <span class=\"bp-b1-chip bp-b1-chip-live\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span>\n <span class=\"bp-b1-lane-text\">\n <span class=\"bp-b1-lane-title\">C\u00e1c thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 chia s\u1ebb<\/span>\n <span class=\"bp-b1-lane-sub\">\u0110\u1ea7u cu\u1ed1i CS ho\u1eb7c t\u1ef7 l\u1ec7 gi\u1ea3m; t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt \u0111\u00e3 n\u00eau r\u00f5 nh\u01b0 v\u1eady.<\/span>\n <\/span>\n <\/div>\n <\/div>\n\n <h2>L\u1ef1a ch\u1ecdn c\u1ea5u h\u00ecnh ngu\u1ed3n \u0111i\u1ec7n d\u1ef1 ph\u00f2ng: 1+1 so v\u1edbi N+1, v\u00e0 c\u00e1ch \u0111\u1ecdc th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1ec1 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng song song<\/h2>\n <p>Khi m\u1ee5c ti\u00eau l\u00e0 \u0111\u1ea3m b\u1ea3o d\u1ef1 ph\u00f2ng, c\u00f3 hai ph\u01b0\u01a1ng \u00e1n \u0111\u00e1nh s\u1ed1 ch\u1ee7 y\u1ebfu, v\u00e0 ch\u00fang \u0111\u1eb7t ra c\u00e1c y\u00eau c\u1ea7u kh\u00e1c nhau \u0111\u1ed1i v\u1edbi s\u1ea3n ph\u1ea9m.<\/p>\n\n <h3>1+1 so v\u1edbi N+1: c\u00f3 bao nhi\u00eau ngu\u1ed3n cung c\u1ea5p v\u00e0 m\u1ee9c x\u1ebfp h\u1ea1ng nh\u01b0 th\u1ebf n\u00e0o<\/h3>\n <p><strong>C\u01a1 ch\u1ebf d\u1ef1 ph\u00f2ng 1+1<\/strong> s\u1eed d\u1ee5ng hai b\u1ed9 ngu\u1ed3n gi\u1ed1ng h\u1ec7t nhau, m\u1ed7i b\u1ed9 \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i to\u00e0n b\u1ed9 m\u1ed9t m\u00ecnh, k\u00e8m theo c\u01a1 ch\u1ebf t\u00e1ch r\u1eddi. V\u00ec kh\u00f4ng c\u00f3 b\u1ed9 ngu\u1ed3n n\u00e0o b\u1ecb y\u00eau c\u1ea7u ph\u1ea3i v\u01b0\u1ee3t qu\u00e1 c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c c\u1ee7a n\u00f3, n\u00ean ph\u01b0\u01a1ng ph\u00e1p \u201c1+1\u201d c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi c\u00e1c b\u1ed9 ngu\u1ed3n th\u00f4ng th\u01b0\u1eddng (kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng song song), mi\u1ec5n l\u00e0 ch\u00fang \u0111\u01b0\u1ee3c t\u00e1ch r\u1eddi (<a href=\"https:\/\/www.pulspower.com\/cam\/blog\/parallel-connection-and-redundancy-of-power-supplies-what-is-the-difference\/\">PULS<\/a>, 2022).<\/p>\n <p><strong>D\u1ef1 ph\u00f2ng N+1<\/strong> l\u1eafp \u0111\u1eb7t th\u00eam m\u1ed9t thi\u1ebft b\u1ecb d\u1ef1 ph\u00f2ng so v\u1edbi s\u1ed1 l\u01b0\u1ee3ng c\u1ea7n thi\u1ebft. B\u1edfi v\u00ec h\u1ec7 th\u1ed1ng ch\u1ec9 \u0111\u1ea1t \u0111\u01b0\u1ee3c tr\u1ea1ng th\u00e1i c\u00e2n b\u1eb1ng khi c\u00e1c thi\u1ebft b\u1ecb chia s\u1ebb d\u00f2ng \u0111i\u1ec7n, <strong>N+1 y\u00eau c\u1ea7u c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn r\u00f5 r\u00e0ng l\u00e0 ph\u00f9 h\u1ee3p cho ho\u1ea1t \u0111\u1ed9ng song song<\/strong>. M\u1ed9t \u0111\u01a1n v\u1ecb th\u00f4ng th\u01b0\u1eddng kh\u00f4ng th\u1ec3 \u0111\u1ea3m nh\u1eadn vai tr\u00f2 n\u00e0y (<a href=\"https:\/\/www.pulspower.com\/cam\/blog\/parallel-connection-and-redundancy-of-power-supplies-what-is-the-difference\/\">PULS<\/a>, 2022). Sau khi gh\u00e9p song song, l\u1ea5y 90% c\u1ee7a c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c t\u1ed5ng h\u1ee3p l\u00e0m gi\u1edbi h\u1ea1n t\u1ed1i \u0111a c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng (<a href=\"https:\/\/meanwellpowersupplies.com\/technical-articles\/faq\/what-are-the-requirements-of-parallel-connections-what-are-the-differences-between-parallel-and-redundant\/\">C\u00d3 \u00dd T\u1ed0T<\/a>, (kh\u00f4ng ghi n\u0103m).<\/p>\n\n \n <div class=\"bp-b2-ratio bd-reveal\">\n <div class=\"bp-b2-col\">\n <div class=\"bp-b2-head\">1+1 \u2014 c\u1eb7p d\u1ef1 ph\u00f2ng<\/div>\n <div class=\"bp-b2-row\"><span class=\"bp-b2-num\">2 \u00d7 t\u1ea3i \u0111\u1ea7y \u0111\u1ee7<\/span><span class=\"bp-b2-desc\">m\u1ed7i chi\u1ebfc xe c\u00f3 th\u1ec3 ch\u1edf to\u00e0n b\u1ed9 h\u00e0nh kh\u00e1ch tr\u00ean xe bu\u00fdt m\u1ed9t m\u00ecnh<\/span><\/div>\n <div class=\"bp-b2-row\"><span class=\"bp-b2-num\">Xe bu\u00fdt s\u1ed1 10 A<\/span><span class=\"bp-b2-desc\">hai b\u1ed9 ph\u1eadn 10 A; m\u1ed9t b\u1ed9 ph\u1eadn c\u00f2n ho\u1ea1t \u0111\u1ed9ng mang m\u00e3 100%<\/span><\/div>\n <div class=\"bp-b2-row\"><span class=\"bp-b2-num\">B\u1ea5t k\u1ef3 lo\u1ea1i ngu\u1ed3n cung n\u00e0o<\/span><span class=\"bp-b2-desc\">C\u00e1c \u0111\u01a1n v\u1ecb th\u00f4ng th\u01b0\u1eddng v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng khi \u0111\u01b0\u1ee3c t\u00e1ch r\u1eddi<\/span><\/div>\n <\/div>\n <div class=\"bp-b2-col\">\n <div class=\"bp-b2-head\">N+1 \u2014 chia s\u1ebb v\u1edbi m\u1ed9t ng\u01b0\u1eddi d\u1ef1 ph\u00f2ng<\/div>\n <div class=\"bp-b2-row\"><span class=\"bp-b2-num\">N+1 \u00d7 t\u1ea3i \u00f7 N<\/span><span class=\"bp-b2-desc\">m\u1ed7i \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 m\u1ed9t ph\u1ea7n, c\u1ed9ng th\u00eam m\u1ed9t ph\u1ea7n d\u1ef1 ph\u00f2ng<\/span><\/div>\n <div class=\"bp-b2-row\"><span class=\"bp-b2-num\">Xe bu\u00fdt tuy\u1ebfn 60A<\/span><span class=\"bp-b2-desc\">b\u1ed1n b\u1ed9 20 A, m\u1ed7i b\u1ed9 ph\u00e2n chia d\u00f2ng \u0111i\u1ec7n kho\u1ea3ng 15 A<\/span><\/div>\n <div class=\"bp-b2-row\"><span class=\"bp-b2-num\">Ch\u1ec9 d\u00e0nh cho c\u00f4ng su\u1ea5t song song<\/span><span class=\"bp-b2-desc\">C\u00e1c thi\u1ebft b\u1ecb ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng song song<\/span><\/div>\n <\/div>\n <\/div>\n\n <h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh li\u1ec7u m\u1ed9t ngu\u1ed3n c\u1ea5p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i song song hay kh\u00f4ng<\/h3>\n <p>H\u00e3y \u0111\u1ecdc b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt nh\u01b0 m\u1ed9t danh s\u00e1ch ki\u1ec3m tra:<\/p>\n <ul>\n <li><strong>Giao di\u1ec7n chia s\u1ebb d\u00f2ng \u0111i\u1ec7n.<\/strong> CS ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb chia s\u1ebb t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i b\u1eb1ng d\u00e2y gi\u1eefa c\u00e1c \u0111\u01a1n v\u1ecb (m\u1ed9t s\u1ed1 gia \u0111\u00ecnh g\u1ecdi ch\u00fang l\u00e0 P, LP ho\u1eb7c PLINK), ho\u1eb7c m\u1ed9t ch\u1ee9c n\u0103ng chia s\u1ebb droop \u0111\u00e3 \u0111\u01b0\u1ee3c ghi ch\u00e9p r\u00f5 r\u00e0ng m\u00e0 kh\u00f4ng c\u1ea7n d\u00e2y k\u1ebft n\u1ed1i.<\/li>\n <li><strong>M\u1ed9t h\u1ec7 th\u1ed1ng x\u1ebfp h\u1ea1ng song song r\u00f5 r\u00e0ng.<\/strong> \u201cHo\u1ea1t \u0111\u1ed9ng song song t\u1ed1i \u0111a N thi\u1ebft b\u1ecb\u201d v\u1edbi s\u1ed1 l\u01b0\u1ee3ng t\u1ed1i \u0111a; h\u1ea7u h\u1ebft c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec1u gi\u1edbi h\u1ea1n s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb trong m\u1ed9t m\u1ea3ng t\u1eeb b\u1ed1n \u0111\u1ebfn s\u00e1u thi\u1ebft b\u1ecb.<\/li>\n <li><strong>M\u1ed9t ti\u1ebfp \u0111i\u1ec3m DC-OK \/ b\u00e1o \u0111\u1ed9ng.<\/strong> N\u1ebfu kh\u00f4ng c\u00f3 n\u00f3, b\u1ea1n s\u1ebd kh\u00f4ng th\u1ec3 th\u00f4ng b\u00e1o cho PLC bi\u1ebft r\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb \u0111\u00e3 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng.<\/li>\n <li><strong>Im l\u1eb7ng c\u00f3 ngh\u0129a l\u00e0 \u201ckh\u00f4ng\u201d.<\/strong> N\u1ebfu b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt li\u1ec7t k\u00ea c\u00e1c th\u00f4ng s\u1ed1 nh\u01b0 qu\u00e1 t\u1ea3i \u1edf ch\u1ebf \u0111\u1ed9 gi\u1eadt, \u0111\u1ed9 dao \u0111\u1ed9ng v\u00e0 d\u1ea3i nhi\u1ec7t \u0111\u1ed9 nh\u01b0ng kh\u00f4ng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c k\u1ebft n\u1ed1i song song, h\u00e3y coi thi\u1ebft b\u1ecb \u0111\u00f3 l\u00e0 lo\u1ea1i ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng \u0111\u01a1n l\u1ebb. \u0110\u00f3 l\u00e0 t\u00ecnh tr\u1ea1ng chung c\u1ee7a h\u1ea7u h\u1ebft c\u00e1c b\u1ed9 ngu\u1ed3n DIN-rail m\u1ecfng thu\u1ed9c d\u1ea3i c\u00f4ng su\u1ea5t 15\u2013480 W: \u0111\u00e2y l\u00e0 nh\u1eefng thi\u1ebft b\u1ecb t\u1ed1t, m\u1ed7i bus ch\u1ec9 n\u00ean l\u1eafp m\u1ed9t chi\u1ebfc.<\/li>\n <\/ul>\n <p>C\u00e1c quy t\u1eafc n\u1ed1i d\u00e2y c\u0169ng quan tr\u1ecdng kh\u00f4ng k\u00e9m th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt. H\u00e3y \u0111\u1ea3m b\u1ea3o ch\u00eanh l\u1ec7ch \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 0,2 V, v\u00e0 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb v\u1edbi nhau b\u1eb1ng d\u00e2y ng\u1eafn, c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn <em>tr\u01b0\u1edbc \u0111\u00f3<\/em> k\u1ebft n\u1ed1i m\u1ed9t c\u1eb7p d\u00e2y d\u1eabn v\u1edbi t\u1ea3i. Ngo\u00e0i ra, h\u00e3y \u0111\u1ea3m b\u1ea3o t\u1ed5ng t\u1ea3i lu\u00f4n \u1edf m\u1ee9c cao h\u01a1n kho\u1ea3ng 10% so v\u1edbi c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb: n\u1ebfu th\u1ea5p h\u01a1n m\u1ee9c \u0111\u00f3, c\u00e1c t\u00edn hi\u1ec7u \u201cpower-good\u201d v\u00e0 c\u1ea3nh b\u00e1o c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng b\u1ea5t th\u01b0\u1eddng d\u00f9 th\u1ef1c t\u1ebf kh\u00f4ng c\u00f3 s\u1ef1 c\u1ed1 n\u00e0o x\u1ea3y ra (<a href=\"https:\/\/meanwellpowersupplies.com\/technical-articles\/faq\/what-are-the-requirements-of-parallel-connections-what-are-the-differences-between-parallel-and-redundant\/\">C\u00d3 \u00dd T\u1ed0T<\/a>, (kh\u00f4ng ghi n\u0103m).<\/p>\n\n \n <div class=\"rich-table-title\">C\u00e1ch b\u1ed1 tr\u00ed song song n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi b\u1ed1i c\u1ea3nh c\u1ee7a b\u1ea1n?<\/div>\n <div class=\"table-wrapper\">\n <table class=\"rich-table\">\n <thead>\n <tr>\n <th>K\u1ecbch b\u1ea3n<\/th>\n <th>C\u00e0i \u0111\u1eb7t \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/th>\n <th>C\u1ea7n ki\u1ec3m tra nh\u1eefng g\u00ec<\/th>\n <th>Khi n\u00e0o n\u00ean chuy\u1ec3n sang<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>M\u1edf r\u1ed9ng v\u0129nh vi\u1ec5n (t\u1ea3i tr\u1ecdng v\u01b0\u1ee3t qu\u00e1 m\u1ed9t \u0111\u01a1n v\u1ecb)<\/td>\n <td>C\u00e1c thi\u1ebft b\u1ecb c\u00f3 c\u00f4ng su\u1ea5t song song (2\u20134) ho\u1eb7c chia t\u1ea3i<\/td>\n <td>C\u00f9ng m\u1eabu v\u00e0 c\u00f9ng l\u00f4; c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i CS \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i; t\u1ed5ng c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c \u226490%; ch\u00eanh l\u1ec7ch \u0111i\u1ec7n \u00e1p d\u01b0\u1edbi 0,2 V<\/td>\n <td>Khi t\u1ea3i gi\u1ea3m, h\u00e3y gi\u1ea3m xu\u1ed1ng c\u00f2n m\u1ed9t \u0111\u01a1n v\u1ecb<\/td>\n <\/tr>\n <tr>\n <td>T\u1ee7 m\u1edbi, th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt d\u1ef1 ph\u00f2ng 1+1<\/td>\n <td>C\u1eb7p thi\u1ebft b\u1ecb song song, ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb th\u00f4ng th\u01b0\u1eddng + m\u00f4-\u0111un d\u1ef1 ph\u00f2ng<\/td>\n <td>M\u1ed7i thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 ch\u1ecbu t\u1ea3i \u0111\u1ea7y \u0111\u1ee7 m\u1ed9t m\u00ecnh; ti\u1ebfp \u0111i\u1ec3m DC-OK k\u1ebft n\u1ed1i v\u1edbi PLC; c\u00e1c ngu\u1ed3n c\u1ea5p AC ri\u00eang bi\u1ec7t<\/td>\n <td>Ki\u1ec3m tra xem t\u1eebng thi\u1ebft b\u1ecb c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1edf c\u00f4ng su\u1ea5t t\u1ed1i \u0111a \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1ee7 hay kh\u00f4ng<\/td>\n <\/tr>\n <tr>\n <td>D\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t, N+1<\/td>\n <td>Ch\u1ec9 \u00e1p d\u1ee5ng cho c\u00e1c thi\u1ebft b\u1ecb c\u00f3 c\u00f4ng su\u1ea5t song song (ph\u1ea3i h\u1ed7 tr\u1ee3 chia s\u1ebb)<\/td>\n <td>\u0110\u00e1nh gi\u00e1 c\u1ee7a N \u0111\u01a1n v\u1ecb \u2265 1,1 l\u1ea7n t\u1ea3i tr\u1ecdng; duy tr\u00ec bi\u00ean \u0111\u1ed9 an to\u00e0n cho m\u1ed7i \u0111\u01a1n v\u1ecb<\/td>\n <td>N\u1ebfu kh\u00f4ng c\u00f2n ch\u1ed7 tr\u1ed1ng trong t\u1ee7, h\u00e3y h\u1ea1 c\u1ea5p xu\u1ed1ng g\u00f3i 1+1<\/td>\n <\/tr>\n <tr>\n <td>Thay th\u1ebf t\u1ea1m th\u1eddi (thi\u1ebft b\u1ecb ch\u00ednh b\u1ecb h\u1ecfng, thi\u1ebft b\u1ecb d\u1ef1 ph\u00f2ng \u0111ang \u0111\u01b0\u1ee3c \u0111\u1eb7t h\u00e0ng)<\/td>\n <td>Chia t\u1ea3i, ho\u1eb7c c\u00e1c m\u1ea1ch th\u00f4ng th\u01b0\u1eddng + t\u00e1ch t\u00edn hi\u1ec7u b\u1eb1ng \u0111i-\u1ed1t<\/td>\n <td>T\u1ea3i ph\u1ea3i \u0111\u01b0\u1ee3c chia th\u00e0nh hai ph\u1ea7n, ho\u1eb7c m\u1ee9c s\u1ee5t \u00e1p ph\u1ea3i \u1edf m\u1ee9c ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c<\/td>\n <td>Khi ph\u1ee5 t\u00f9ng thay th\u1ebf \u0111\u1ebfn, h\u00e3y chuy\u1ec3n v\u1ec1 tr\u1ea1ng th\u00e1i ch\u1ec9 c\u00f3 m\u1ed9t \u0111\u01a1n v\u1ecb<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <h3>Ngu\u1ed3n \u0111i\u1ec7n h\u1ed7 tr\u1ee3 ch\u1ebf \u0111\u1ed9 song song, hay ngu\u1ed3n \u0111i\u1ec7n th\u00f4ng th\u01b0\u1eddng k\u1ebft h\u1ee3p v\u1edbi m\u00f4-\u0111un d\u1ef1 ph\u00f2ng?<\/h3>\n <p>\u0110\u1ed1i v\u1edbi t\u1ee7 m\u1edbi, h\u00e3y mua theo th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt: b\u1ed9 ngu\u1ed3n h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i song song cho c\u1ea5u h\u00ecnh N+1, v\u00e0 \u0111\u1ed1i v\u1edbi c\u1ea5u h\u00ecnh 1+1 th\u00ec c\u00f3 th\u1ec3 ch\u1ecdn c\u1eb7p b\u1ed9 ngu\u1ed3n h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i song song ho\u1eb7c c\u00e1c b\u1ed9 ngu\u1ed3n th\u00f4ng th\u01b0\u1eddng k\u1ebft h\u1ee3p v\u1edbi m\u00f4-\u0111un d\u1ef1 ph\u00f2ng. \u0110\u1ed1i v\u1edbi t\u1ee7 \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t s\u1eb5n, gi\u1ea3i ph\u00e1p n\u00e2ng c\u1ea5p g\u1ea7n nh\u01b0 lu\u00f4n l\u00e0 s\u1eed d\u1ee5ng b\u1ed9 ngu\u1ed3n th\u00f4ng th\u01b0\u1eddng k\u1ebft h\u1ee3p v\u1edbi m\u00f4-\u0111un: b\u1ea1n v\u1eabn gi\u1eef nguy\u00ean di\u1ec7n t\u00edch l\u1eafp \u0111\u1eb7t v\u00e0 t\u1eadn d\u1ee5ng \u0111\u01b0\u1ee3c c\u00e1c ti\u1ebfp \u0111i\u1ec3m DC-OK c\u1ee7a m\u00f4-\u0111un. C\u00f3 m\u1ed9t c\u1ea3nh b\u00e1o t\u1eeb c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t m\u00f4-\u0111un m\u00e0 b\u1ea1n n\u00ean l\u01b0u \u00fd: m\u1ed9t b\u1ed9 ngu\u1ed3n c\u00f3 ch\u1ee9c n\u0103ng song song kh\u00f4ng t\u1ef1 \u0111\u1ed9ng s\u1eb5n s\u00e0ng cho d\u1ef1 ph\u00f2ng, v\u00ec c\u00e1c m\u1ea1ch chia s\u1ebb d\u00f2ng \u0111i\u1ec7n ch\u1ee7 \u0111\u1ed9ng th\u01b0\u1eddng thi\u1ebfu b\u1ea3o v\u1ec7 ch\u1ed1ng d\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c. N\u1ebfu m\u1ed9t thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i song song b\u1ecb h\u1ecfng v\u00e0 g\u00e2y ra ng\u1eafn m\u1ea1ch \u0111\u1ea7u ra, n\u00f3 c\u00f3 th\u1ec3 l\u00e0m s\u1ee5t \u00e1p tr\u00ean \u0111\u01b0\u1eddng d\u1eabn (bus) tr\u1eeb khi c\u00f3 g\u00ec \u0111\u00f3 ng\u1eaft k\u1ebft n\u1ed1i n\u00f3. \u0110\u00f3 ch\u00ednh x\u00e1c l\u00e0 nh\u1eefng g\u00ec c\u00e1c \u0111i-\u1ed1t ho\u1eb7c m\u00f4-\u0111un d\u1ef1a tr\u00ean MOSFET cung c\u1ea5p (<a href=\"https:\/\/www.meanwell.com\/newsInfo.aspx?c=5&i=847\">C\u00d3 \u00dd T\u1ed0T<\/a>, 2020). \u0110\u1ed3ng th\u1eddi, n\u1ebfu c\u00f3 th\u1ec3, h\u00e3y c\u1ea5p ngu\u1ed3n cho t\u1eebng h\u1ec7 th\u1ed1ng d\u1ef1 ph\u00f2ng t\u1eeb m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n xoay chi\u1ec1u ri\u00eang bi\u1ec7t, \u0111\u1ec3 tr\u01b0\u1eddng h\u1ee3p m\u1ea5t m\u1ed9t pha kh\u00f4ng l\u00e0m c\u1ea3 hai thi\u1ebft b\u1ecb ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u00f9ng l\u00fac (<a href=\"https:\/\/www.pulspower.com\/cam\/blog\/parallel-connection-and-redundancy-of-power-supplies-what-is-the-difference\/\">PULS<\/a>, 2022).<\/p>\n\n <h2>T\u1ea1i sao c\u00e1c b\u1ed9 ngu\u1ed3n n\u1ed1i song song l\u1ea1i g\u1eb7p s\u1ef1 c\u1ed1: S\u1ef1 lan truy\u1ec1n l\u1ed7i, b\u1eaby t\u1ea3i nh\u1eb9 v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m tra t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng<\/h2>\n <p>M\u1ecdi s\u1ef1 c\u1ed1 x\u1ea3y ra v\u1edbi h\u1ec7 th\u1ed1ng song song \u0111\u1ec1u b\u1eaft ngu\u1ed3n t\u1eeb m\u1ed9t nguy\u00ean t\u1eafc: d\u00f2ng \u0111i\u1ec7n ph\u1ea3i <em>\u0111\u01b0\u1ee3c chia s\u1ebb<\/em>, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 \u0111\u01b0\u1ee3c ph\u00e9p. N\u1ebfu kh\u00f4ng c\u00f3 s\u1ef1 ph\u00e2n chia t\u1ea3i, thi\u1ebft b\u1ecb c\u00f3 \u0111i\u1ec7n \u00e1p cao nh\u1ea5t s\u1ebd ph\u1ea3i g\u00e1nh v\u00e1c to\u00e0n b\u1ed9 t\u1ea3i cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u1ebfn gi\u1edbi h\u1ea1n v\u00e0 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. C\u00f3 hai c\u01a1 ch\u1ebf kh\u1eafc ph\u1ee5c v\u1ea5n \u0111\u1ec1 n\u00e0y (<a href=\"https:\/\/www.digikey.com\/en\/articles\/properly-configure-parallel-power-supplies\">DigiKey<\/a>, 2016):<\/p>\n <ul>\n <li><strong>Chia s\u1ebb Droop (th\u1ee5 \u0111\u1ed9ng)<\/strong> H\u00e3y \u0111\u1ec3 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra gi\u1ea3m nh\u1eb9 khi d\u00f2ng \u0111i\u1ec7n t\u0103ng l\u00ean, nh\u1edd \u0111\u00f3 thi\u1ebft b\u1ecb b\u1ecb qu\u00e1 t\u1ea3i s\u1ebd gi\u1ea3m \u0111i\u1ec7n \u00e1p v\u00e0 c\u00e1c thi\u1ebft b\u1ecb c\u00f2n l\u1ea1i s\u1ebd b\u00f9 \u0111\u1eafp ph\u1ea7n thi\u1ebfu h\u1ee5t. C\u00e1ch l\u00e0m n\u00e0y \u0111\u01a1n gi\u1ea3n v\u00e0 b\u1ec1n b\u1ec9; \u0111\u1ed5i l\u1ea1i, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a \u0111i\u1ec7n \u00e1p s\u1ebd k\u00e9m h\u01a1n.<\/li>\n <li><strong>Chia s\u1ebb t\u00edch c\u1ef1c<\/strong> n\u1ed1i c\u00e1c v\u00f2ng l\u1eb7p c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb l\u1ea1i v\u1edbi nhau th\u00f4ng qua m\u1ed9t d\u00e2y chung \u0111\u1ec3 ch\u00fang \u0111i\u1ec1u ch\u1ec9nh c\u00f9ng m\u1ed9t c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n. C\u00e1ch n\u00e0y mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng ch\u1eb7t ch\u1ebd h\u01a1n, nh\u01b0ng do ph\u1ea3i \u0111i th\u00eam d\u00e2y v\u00e0 thi\u1ebfu ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 ng\u01b0\u1ee3c n\u00ean n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi c\u01a1 ch\u1ebf t\u00e1ch bi\u1ec7t khi m\u1ee5c ti\u00eau l\u00e0 \u0111\u1ea3m b\u1ea3o d\u1ef1 ph\u00f2ng.<\/li>\n <\/ul>\n\n \n <blockquote class=\"bp-b3-pin bd-reveal\">M\u1ed9t \u0111i-\u1ed1t ho\u1eb7c m\u1ed9t m\u00f4-\u0111un \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t gi\u1eefa m\u1ed7i ngu\u1ed3n c\u1ea5p v\u00e0 \u0111\u01b0\u1eddng d\u1eabn ch\u00ednh ch\u00ednh l\u00e0 y\u1ebfu t\u1ed1 bi\u1ebfn ch\u1ebf \u0111\u1ed9 \u201csong song\u201d th\u00e0nh ch\u1ebf \u0111\u1ed9 \u201cd\u1ef1 ph\u00f2ng\u201d \u2014 n\u00f3 ng\u0103n ch\u1eb7n d\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c ch\u1ea3y v\u00e0o \u0111\u1ea7u ra b\u1ecb ch\u1eadp m\u1ea1ch c\u1ee7a thi\u1ebft b\u1ecb b\u1ecb h\u1ecfng.<\/blockquote>\n\n <p>N\u1ebfu b\u1ecf qua b\u01b0\u1edbc t\u00e1ch r\u1eddi, ch\u1ec9 c\u1ea7n m\u1ed9t s\u1ef1 c\u1ed1 duy nh\u1ea5t c\u0169ng \u0111\u1ee7 \u0111\u1ec3 bi\u1ebfn c\u1eb7p d\u1ef1 ph\u00f2ng c\u1ee7a b\u1ea1n th\u00e0nh m\u1ed9t s\u1ef1 c\u1ed1 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng tr\u00ean to\u00e0n h\u1ec7 th\u1ed1ng.<\/p>\n\n <img decoding=\"async\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/09\/Power-Supplies-in-Parallel.webp\" style=\"width: 512px; height: 384px; max-width: 100%; object-fit: cover; border-radius: 12px; margin: 30px auto; display: block; box-shadow: 10px 10px 60px 0px rgba(210, 221, 224, 0.35); transition: all 0.3s ease; cursor: pointer;\" onmouseover=\"this.style.transform='translateY(-5px) scale(1.03)'; this.style.boxShadow='15px 25px 80px 0px rgba(210, 221, 224, 0.45)'\" onmouseout=\"this.style.transform='translateY(0) scale(1)'; this.style.boxShadow='10px 10px 60px 0px rgba(210, 221, 224, 0.35)'\"> \n\n <h3>Ki\u1ec3m tra th\u1ef1c \u0111\u1ecba: c\u1ea3nh b\u00e1o t\u1ea3i nh\u1eb9, thay th\u1ebf n\u00f3ng v\u00e0 c\u00e1c tri\u1ec7u ch\u1ee9ng li\u00ean quan \u0111\u1ebfn m\u1ea1ch \u0111i-\u1ed1t<\/h3>\n <p>Khi m\u1ed9t c\u1ea5u h\u00ecnh k\u1ebft h\u1ee3p ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng \u0111\u00fang, h\u00e3y ki\u1ec3m tra danh s\u00e1ch theo th\u1ee9 t\u1ef1:<\/p>\n <ol>\n <li><strong>Tr\u01b0\u1edbc ti\u00ean, h\u00e3y c\u00e1ch ly.<\/strong> Ng\u1eaft k\u1ebft n\u1ed1i \u0111\u01b0\u1eddng d\u00e2y ch\u00ednh, n\u1ed1i t\u1eebng ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n v\u00e0o t\u1ea3i ri\u00eang c\u1ee7a n\u00f3, r\u1ed3i ki\u1ec3m tra \u0111i\u1ec7n \u00e1p v\u00e0 t\u00edn hi\u1ec7u DC-OK tr\u00ean t\u1eebng ngu\u1ed3n. C\u00e1ch n\u00e0y gi\u00fap ph\u00e2n bi\u1ec7t gi\u1eefa \u201cm\u1ed9t thi\u1ebft b\u1ecb b\u1ecb l\u1ed7i\u201d v\u00e0 \u201cs\u1ef1 k\u1ebft h\u1ee3p kh\u00f4ng \u0111\u00fang\u201d.\u201d<\/li>\n <li><strong>H\u00e3y tu\u00e2n th\u1ee7 quy t\u1eafc t\u1ea3i nh\u1eb9.<\/strong> Khi m\u1ee9c \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3 gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi kho\u1ea3ng 10%, c\u00e1c t\u00edn hi\u1ec7u \u201cpower-good\u201d\/b\u00e1o \u0111\u1ed9ng c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t ch\u00ednh x\u00e1c v\u00e0 vi\u1ec7c chia s\u1ebb ngu\u1ed3n c\u00f3 th\u1ec3 tr\u1edf n\u00ean m\u1ea5t c\u00e2n b\u1eb1ng; \u0111\u00e2y l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00e3 \u0111\u01b0\u1ee3c ghi nh\u1eadn trong t\u00e0i li\u1ec7u, kh\u00f4ng ph\u1ea3i do thi\u1ebft b\u1ecb b\u1ecb h\u1ecfng (<a href=\"https:\/\/meanwellpowersupplies.com\/technical-articles\/faq\/what-are-the-requirements-of-parallel-connections-what-are-the-differences-between-parallel-and-redundant\/\">C\u00d3 \u00dd T\u1ed0T<\/a>, (kh\u00f4ng ghi ng\u00e0y th\u00e1ng). H\u00e3y l\u00ean xe bu\u00fdt ho\u1eb7c ph\u1edbt l\u1edd ti\u1ebfng c\u00f2i b\u00e1o \u0111\u1ed9ng, nh\u01b0ng h\u00e3y bi\u1ebft r\u00f5 m\u00ecnh \u0111ang l\u00e0m g\u00ec.<\/li>\n <li><strong>\u0110o m\u1ea1ch \u0111i-\u1ed1t \u0111\u00fang c\u00e1ch.<\/strong> \u0110i\u1ec7n \u00e1p bus khi kh\u00f4ng t\u1ea3i n\u00ean th\u1ea5p h\u01a1n gi\u00e1 tr\u1ecb c\u00e0i \u0111\u1eb7t c\u1ee7a ngu\u1ed3n c\u1ea5p kho\u1ea3ng 0,3\u20130,5 V. N\u1ebfu ch\u1ec9 s\u1ed1 hi\u1ec3n th\u1ecb b\u1eb1ng gi\u00e1 tr\u1ecb c\u00e0i \u0111\u1eb7t t\u1ed1i \u0111a, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t \u0111i-\u1ed1t b\u1ecb ch\u1eadp m\u1ea1ch v\u00e0 thi\u1ebft b\u1ecb \u0111\u00f3 kh\u00f4ng c\u00f2n \u0111\u01b0\u1ee3c c\u00e1ch ly. T\u00ecnh tr\u1ea1ng \u0111i-\u1ed1t qu\u00e1 n\u00f3ng khi t\u1ea3i \u1edf m\u1ee9c v\u1eeba ph\u1ea3i cho th\u1ea5y c\u00e1c linh ki\u1ec7n c\u00f3 c\u00f4ng su\u1ea5t kh\u00f4ng \u0111\u1ee7 ho\u1eb7c thi\u1ebfu b\u1ed9 t\u1ea3n nhi\u1ec7t \u2014 \u0111\u00e2y l\u00e0 nguy\u00ean nh\u00e2n h\u1ecfng h\u00f3c ph\u1ed5 bi\u1ebfn nh\u1ea5t trong c\u00e1c d\u1ef1 \u00e1n t\u1ef1 l\u00e0m.<\/li>\n <li><strong>Kh\u00f4ng \u0111\u01b0\u1ee3c thay th\u1ebf thi\u1ebft b\u1ecb khi \u0111ang ho\u1ea1t \u0111\u1ed9ng tr\u1eeb khi c\u00f3 h\u01b0\u1edbng d\u1eabn c\u1ee5 th\u1ec3.<\/strong> Vi\u1ec7c th\u00e1o v\u00e0 thay th\u1ebf m\u1ed9t thi\u1ebft b\u1ecb tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng bus chung \u0111ang ho\u1ea1t \u0111\u1ed9ng ch\u1ec9 an to\u00e0n khi ph\u1ea7n c\u1ee9ng \u0111\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u0111i\u1ec1u ki\u1ec7n \u0111\u00f3. Tr\u00ean h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng \u0111i-\u1ed1t, h\u00e3y ng\u1eaft t\u1ea3i ho\u1eb7c t\u1eaft ngu\u1ed3n \u0111\u01b0\u1eddng ray tr\u01b0\u1edbc.<\/li>\n <li><strong>Kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c tr\u1ed9n l\u1eabn c\u00e1c th\u01b0\u01a1ng hi\u1ec7u, m\u1eabu m\u00e3 ho\u1eb7c m\u1ee9c x\u1ebfp h\u1ea1ng trong c\u00f9ng m\u1ed9t nh\u00f3m.<\/strong> C\u00e1c gi\u00e1 tr\u1ecb \u0111\u1eb7t v\u00e0 \u0111\u01b0\u1eddng cong dao \u0111\u1ed9ng kh\u00e1c nhau s\u1ebd l\u00e0m m\u1ea5t kh\u1ea3 n\u0103ng chia s\u1ebb ngay t\u1eeb \u0111\u1ea7u; n\u1ebfu c\u00e1c thi\u1ebft b\u1ecb ph\u1ea3i kh\u00e1c nhau, h\u00e3y chia t\u1ea3i (\u0110\u01b0\u1eddng d\u1eabn 1).<\/li>\n <\/ol>\n\n \n <div class=\"rich-callout\">\n <span class=\"rich-callout-icon\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"m21.73 18-8-14a2 2 0 0 0-3.48 0l-8 14A2 2 0 0 0 4 21h16a2 2 0 0 0 1.73-3Z\"\/><path d=\"M12 9v4\"\/><path d=\"M12 17h.01\"\/><\/svg><\/span>\n <div class=\"rich-callout-body\">Tr\u00ean m\u1ed9t bus song song \u0111ang ho\u1ea1t \u0111\u1ed9ng: kh\u00f4ng \u0111\u01b0\u1ee3c thay th\u1ebf n\u00f3ng c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u1ed7 tr\u1ee3 t\u00ednh n\u0103ng n\u00e0y, v\u00e0 tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p c\u00e1c m\u1eabu kh\u00e1c nhau \u2014 ph\u1ea3i c\u00f3 c\u00f9ng m\u00e3 s\u1ea3n ph\u1ea9m v\u00e0 c\u00f9ng gi\u00e1 tr\u1ecb c\u00e0i \u0111\u1eb7t. M\u1ed9t thi\u1ebft b\u1ecb b\u1ecb l\u1ed7i c\u00f3 \u0111\u1ea7u ra b\u1ecb ng\u1eafn m\u1ea1ch s\u1ebd l\u00e0m s\u1ee5t \u00e1p t\u1ea5t c\u1ea3 c\u00e1c ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c c\u00e1ch ly v\u1edbi n\u00f3.<\/div>\n <\/div>\n\n <p>N\u1ebfu \u0111i\u1ec7n \u00e1p tr\u00ean bus kh\u00f4ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 li\u00ean t\u1ee5c ng\u1eaft m\u1ea1ch ngay c\u1ea3 khi c\u00e1c thi\u1ebft b\u1ecb \u0111\u00e3 \u0111\u01b0\u1ee3c gh\u00e9p n\u1ed1i ph\u00f9 h\u1ee3p v\u00e0 h\u1ec7 th\u1ed1ng d\u00e2y d\u1eabn \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t \u0111\u00fang c\u00e1ch, h\u00e3y d\u1eebng l\u1ea1i: v\u1ea5n \u0111\u1ec1 \u0111\u00e3 kh\u00f4ng c\u00f2n n\u1eb1m \u1edf h\u1ec7 th\u1ed1ng gh\u00e9p song song m\u00e0 \u0111\u00e3 chuy\u1ec3n sang c\u00e1c thi\u1ebft b\u1ecb ho\u1eb7c h\u1ec7 th\u1ed1ng d\u00e2y d\u1eabn \u1edf ph\u00eda th\u01b0\u1ee3ng ngu\u1ed3n.<\/p>\n\n <h2>\u00dd ngh\u0129a c\u1ee7a c\u00e1c b\u1ed9 ngu\u1ed3n song song khi b\u1ea1n b\u00e1n ho\u1eb7c nh\u1eadp kho ch\u00fang<\/h2>\n <p>Khi kh\u00e1ch h\u00e0ng h\u1ecfi li\u1ec7u hai ngu\u1ed3n \u0111i\u1ec7n 24 V \u201cc\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c n\u1ed1i song song\u201d hay kh\u00f4ng, h\u1ecd hi\u1ebfm khi ch\u1ec9 mu\u1ed1n nghe c\u00e2u tr\u1ea3 l\u1eddi \u201cc\u00f3\u201d hay \u201ckh\u00f4ng\u201d. C\u00e2u h\u1ecfi n\u00e0y th\u01b0\u1eddng h\u00e0m \u00fd m\u1ed9t trong ba tr\u01b0\u1eddng h\u1ee3p sau: t\u1ea3i \u0111\u00e3 v\u01b0\u1ee3t qu\u00e1 c\u00f4ng su\u1ea5t c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb duy nh\u1ea5t; m\u1ed9t thi\u1ebft b\u1ecb \u0111\u00e3 h\u1ecfng v\u00e0 c\u00f2n hai thi\u1ebft b\u1ecb nh\u1ecf h\u01a1n \u0111ang n\u1eb1m tr\u00ean k\u1ec7; ho\u1eb7c m\u00e1y m\u00f3c kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. M\u1ed7i \u00fd \u0111\u1ecbnh n\u00e0y s\u1ebd d\u1eabn \u0111\u1ebfn m\u1ed9t c\u00e2u tr\u1ea3 l\u1eddi kh\u00e1c nhau v\u00e0 m\u1ed9t \u0111\u01a1n \u0111\u1eb7t h\u00e0ng kh\u00e1c nhau.<\/p>\n <p>V\u1ea5n \u0111\u1ec1 n\u00e0y n\u1eb1m trong logic s\u1eeda ch\u1eefa v\u00e0 thay th\u1ebf. M\u1ed9t b\u1ed9 ngu\u1ed3n 40 A b\u1ecb h\u1ecfng, b\u1ed9 d\u1ef1 ph\u00f2ng ph\u1ea3i \u0111\u1ee3i hai tu\u1ea7n n\u1eefa m\u1edbi c\u00f3, v\u00e0 k\u1ef9 thu\u1eadt vi\u00ean c\u00f3 hai b\u1ed9 20 A. \u0110\u00e2y l\u00e0 tr\u01b0\u1eddng h\u1ee3p thu\u1ed9c L\u1ed9 tr\u00ecnh 1 (chia t\u1ea3i) ho\u1eb7c L\u1ed9 tr\u00ecnh 2 (b\u1ed9 gh\u00e9p \u0111i\u1ed1t): c\u1ea3 hai \u0111\u1ec1u l\u00e0 c\u00e1c ph\u01b0\u01a1ng \u00e1n h\u1ee3p l\u1ec7 theo ki\u1ec3u 1+1, trong \u0111\u00f3 m\u1ed7i b\u1ed9 c\u00f3 th\u1ec3 ch\u1ecbu m\u1ed9t n\u1eeda t\u1ea3i ho\u1eb7c to\u00e0n b\u1ed9 t\u1ea3i, t\u00f9y theo t\u1eebng tr\u01b0\u1eddng h\u1ee3p. V\u00ec v\u1eady, h\u00e3y h\u1ecfi r\u00f5 m\u1ee5c ti\u00eau (c\u00f4ng su\u1ea5t, thay th\u1ebf ho\u1eb7c th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng) tr\u01b0\u1edbc khi b\u00e1o gi\u00e1. M\u1ee5c ti\u00eau s\u1ebd quy\u1ebft \u0111\u1ecbnh li\u1ec7u kh\u00e1ch h\u00e0ng c\u1ea7n m\u1ed9t thi\u1ebft b\u1ecb l\u1edbn h\u01a1n, m\u1ed9t c\u1eb7p thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p c\u00f3 b\u1ed9 t\u00e1ch t\u1ea3i, hay m\u1ed9t c\u1eb7p thi\u1ebft b\u1ecb song song c\u00f3 m\u00f4-\u0111un d\u1ef1 ph\u00f2ng.<\/p>\n <p>\u0110\u1ed1i v\u1edbi chi\u1ebfn l\u01b0\u1ee3c qu\u1ea3n l\u00fd h\u00e0ng t\u1ed3n kho, \u0111i\u1ec1u n\u00e0y g\u1ee3i \u00fd n\u00ean k\u1ebft h\u1ee3p c\u00e1c thi\u1ebft b\u1ecb thay v\u00ec ch\u1ecdn lo\u1ea1i c\u00f3 c\u00f4ng su\u1ea5t qu\u00e1 l\u1edbn. Thay v\u00ec ch\u1ec9 c\u00f3 m\u1ed9t m\u00e3 h\u00e0ng (SKU) l\u1edbn cho m\u1ed7i d\u1ea3i \u0111i\u1ec7n \u00e1p, h\u00e3y d\u1ef1 tr\u1eef c\u00e1c c\u1eb7p ngu\u1ed3n ti\u00eau chu\u1ea9n ph\u00f9 h\u1ee3p c\u00f9ng v\u1edbi c\u00e1c linh ki\u1ec7n gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n khi k\u1ebft h\u1ee3p ch\u00fang. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 m\u1ed7i \u0111\u1ea7u ra c\u1ee7a ngu\u1ed3n ph\u1ea3i c\u00f3 m\u1ed9t m\u00f4-\u0111un d\u1ef1 ph\u00f2ng (ho\u1eb7c b\u1ed9 diode), m\u1ed9t c\u1ea7u ch\u00ec nh\u00e1nh ho\u1eb7c c\u1ea7u dao mini, c\u00f9ng v\u1edbi c\u00e1c \u0111\u1ea7u n\u1ed1i thanh c\u00e1i c\u00f3 k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p cho h\u1ec7 th\u1ed1ng d\u00e2y song song ng\u1eafn v\u00e0 d\u00e0y. M\u1ed9t nh\u00e0 ph\u00e2n ph\u1ed1i \u0111\u1ea7y \u0111\u1ee7 d\u00f2ng s\u1ea3n ph\u1ea9m c\u00f3 th\u1ec3 giao ngu\u1ed3n \u0111i\u1ec7n DIN-rail, m\u00f4-\u0111un, thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 nh\u00e1nh v\u00e0 kh\u1ed1i \u0111\u1ea7u n\u1ed1i trong m\u1ed9t \u0111\u01a1n h\u00e0ng. Ranh gi\u1edbi h\u1ee3p l\u00fd c\u0169ng r\u1ea5t quan tr\u1ecdng. \u0110\u1ed1i v\u1edbi t\u1ea3i n\u1eb1m tho\u1ea3i m\u00e1i trong ph\u1ea1m vi \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb, l\u1eddi khuy\u00ean \u0111\u00fang \u0111\u1eafn l\u00e0 s\u1eed d\u1ee5ng m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n duy nh\u1ea5t c\u1ed9ng v\u1edbi m\u1ed9t ngu\u1ed3n d\u1ef1 ph\u00f2ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ed9t c\u1eb7p song song. V\u00e0 d\u1ef1 ph\u00f2ng 1+1 gi\u00fap t\u0103ng g\u1ea5p \u0111\u00f4i t\u00ednh s\u1eb5n s\u00e0ng, ch\u1ee9 kh\u00f4ng bao gi\u1edd t\u0103ng c\u00f4ng su\u1ea5t.<\/p>\n\n \n <div class=\"rich-checklist bd-reveal\">\n <div class=\"rich-checklist-title\"><span class=\"rich-checklist-icon\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"m3 17 2 2 4-4\"\/><path d=\"m3 7 2 2 4-4\"\/><path d=\"M13 6h8\"\/><path d=\"M13 12h8\"\/><path d=\"M13 18h8\"\/><\/svg><\/span>B\u1ed9 s\u1ea3n ph\u1ea9m thay th\u1ebf d\u1ef1 ph\u00f2ng (b\u1ed9 d\u1ee5ng c\u1ee5 1+1)<\/div>\n <div class=\"rich-checklist-item\"><span class=\"rich-checklist-check\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span><div class=\"rich-checklist-text\">\u0110\u01a1n v\u1ecb th\u1ee9 hai: c\u00f9ng m\u1eabu, c\u00f9ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt (n\u1ebfu c\u00f3 th\u1ec3 th\u00ec c\u00f9ng l\u00f4 s\u1ea3n xu\u1ea5t).<\/div><\/div>\n <div class=\"rich-checklist-item\"><span class=\"rich-checklist-check\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span><div class=\"rich-checklist-text\">T\u00e1ch r\u1eddi: m\u1ed9t m\u00f4-\u0111un d\u1ef1 ph\u00f2ng, ho\u1eb7c m\u1ed9t \u0111i-\u1ed1t c\u00f4ng su\u1ea5t cho m\u1ed7i \u0111\u1ea7u ra k\u00e8m theo b\u1ed9 t\u1ea3n nhi\u1ec7t.<\/div><\/div>\n <div class=\"rich-checklist-item\"><span class=\"rich-checklist-check\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span><div class=\"rich-checklist-text\">B\u1ea3o v\u1ec7 t\u1eebng nh\u00e1nh theo t\u1eebng \u0111\u1ea7u ra ngu\u1ed3n (c\u1ea7u ch\u00ec ho\u1eb7c c\u00f4ng t\u1eafc ng\u1eaft m\u1ea1ch mini).<\/div><\/div>\n <div class=\"rich-checklist-item\"><span class=\"rich-checklist-check\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span><div class=\"rich-checklist-text\">B\u1ebfn xe bu\u00fdt v\u00e0 c\u00e1c d\u00e2y nh\u1ea3y ng\u1eafn, d\u00e0y.<\/div><\/div>\n <div class=\"rich-checklist-item\"><span class=\"rich-checklist-check\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span><div class=\"rich-checklist-text\">DC-OK \/ c\u00e1c ti\u1ebfp \u0111i\u1ec3m b\u00e1o \u0111\u1ed9ng k\u1ebft n\u1ed1i v\u1edbi PLC (n\u1ebfu m\u00f4-\u0111un c\u00f3 c\u00e1c ti\u1ebfp \u0111i\u1ec3m n\u00e0y).<\/div><\/div>\n <div class=\"rich-checklist-item\"><span class=\"rich-checklist-check\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M20 6 9 17l-5-5\"\/><\/svg><\/span><div class=\"rich-checklist-text\">N\u1ebfu c\u00f3 th\u1ec3, h\u00e3y t\u00e1ch ri\u00eang c\u00e1c \u0111\u01b0\u1eddng c\u1ea5p ngu\u1ed3n AC.<\/div><\/div>\n <\/div>\n\n <p><em>N\u1ebfu b\u1ea1n c\u1ea7n h\u1ed7 tr\u1ee3 \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i t\u00e0i li\u1ec7u n\u00e0y th\u00e0nh b\u1ea3ng danh m\u1ee5c v\u1eadt t\u01b0, vui l\u00f2ng g\u1eedi b\u1ea3n th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 b\u1ea3n v\u1ebd t\u1ee7 \u0111\u1ebfn b\u1ed9 ph\u1eadn c\u1ee7a ch\u00fang t\u00f4i <a href=\"https:\/\/www.omch.com\/vi\/product-selection\/\">d\u1ecbch v\u1ee5 t\u01b0 v\u1ea5n l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m<\/a>; ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c b\u1ed9 ngu\u1ed3n l\u1eafp tr\u00ean thanh DIN, m\u00f4-\u0111un d\u1ef1 ph\u00f2ng v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 t\u01b0\u01a1ng \u1ee9ng. Ch\u00fang t\u00f4i c\u00f3 th\u1ec3 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m m\u1eabu cho t\u1ed5 h\u1ee3p n\u00e0y tr\u01b0\u1edbc khi qu\u00fd kh\u00e1ch quy\u1ebft \u0111\u1ecbnh \u0111\u1eb7t h\u00e0ng s\u1ed1 l\u01b0\u1ee3ng l\u1edbn; v\u00ec v\u1eady, h\u00e3y g\u1eedi cho ch\u00fang t\u00f4i th\u00f4ng s\u1ed1 t\u1ea3i v\u00e0 ch\u00fang t\u00f4i s\u1ebd t\u01b0 v\u1ea5n cho qu\u00fd kh\u00e1ch bi\u1ebft t\u1ed5 h\u1ee3p n\u00e0o l\u00e0 ph\u00f9 h\u1ee3p nh\u1ea5t. OMCH b\u00e1n c\u1ea3 c\u00e1c linh ki\u1ec7n ri\u00eang l\u1ebb l\u1eabn c\u00e1c b\u1ed9 k\u1ebft h\u1ee3p, b\u1edfi v\u00ec ch\u00ednh nh\u1edd s\u1ef1 k\u1ebft h\u1ee3p n\u00e0y m\u00e0 c\u00e1c b\u1ed9 ngu\u1ed3n song song m\u1edbi th\u1ef1c s\u1ef1 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3.<\/em><\/p>\n\n \n <div class=\"bp-cta-end\">\n <div class=\"bp-cta-end-title\"><span class=\"bp-cta-end-icon\"><svg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"m22 2-7 20-4-9-9-4Z\"\/><path d=\"M22 2 11 13\"\/><\/svg><\/span>Chuy\u1ec3n danh s\u00e1ch gh\u00e9p \u0111\u00f4i th\u00e0nh danh s\u00e1ch linh ki\u1ec7n<\/div>\n <div class=\"bp-cta-end-sub\">H\u00e3y cung c\u1ea5p th\u00f4ng tin v\u1ec1 t\u1ea3i tr\u1ecdng, y\u00eau c\u1ea7u v\u1ec1 th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c v\u00e0 chi\u1ec1u r\u1ed9ng thanh DIN m\u00e0 qu\u00fd kh\u00e1ch \u0111ang c\u00f3 \u2014 ch\u00fang t\u00f4i s\u1ebd l\u1ef1a ch\u1ecdn c\u00e1c thi\u1ebft b\u1ecb, b\u1ed9 c\u00e1ch ly v\u00e0 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ph\u00f9 h\u1ee3p v\u1edbi t\u1ee7 \u0111i\u1ec7n c\u1ee7a qu\u00fd kh\u00e1ch, \u0111\u1ed3ng th\u1eddi ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m m\u1eabu b\u1ed9 s\u1ea3n ph\u1ea9m n\u00e0y tr\u01b0\u1edbc khi qu\u00fd kh\u00e1ch \u0111\u1eb7t h\u00e0ng.<\/div>\n <a class=\"bp-cta-end-btn\" href=\"https:\/\/www.omch.com\/vi\/contact\/\" target=\"_self\">G\u1eedi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt h\u00e0ng h\u00f3a qua email<\/a>\n <\/div>\n\n <h2>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n <ol class=\"bd-refs\">\n <li>PULS. \u201cK\u1ebft n\u1ed1i song song v\u00e0 d\u1ef1 ph\u00f2ng ngu\u1ed3n \u0111i\u1ec7n \u2013 S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec?\u201d 2022. <a href=\"https:\/\/www.pulspower.com\/cam\/blog\/parallel-connection-and-redundancy-of-power-supplies-what-is-the-difference\/\">https:\/\/www.pulspower.com\/cam\/blog\/parallel-connection-and-redundancy-of-power-supplies-what-is-the-difference\/<\/a><\/li>\n <li>MEAN WELL Enterprises. \u201cCh\u1ee9c n\u0103ng d\u1ef1 ph\u00f2ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ed9 ngu\u1ed3n.\u201d 2020. <a href=\"https:\/\/www.meanwell.com\/newsInfo.aspx?c=5&i=847\">https:\/\/www.meanwell.com\/newsInfo.aspx?c=5&i=847<\/a><\/li>\n <li>MEAN WELL. \u201cC\u00e1c y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi k\u1ebft n\u1ed1i song song l\u00e0 g\u00ec? S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa k\u1ebft n\u1ed1i song song v\u00e0 k\u1ebft n\u1ed1i d\u1ef1 ph\u00f2ng l\u00e0 g\u00ec?\u201d (C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p d\u00e0nh cho nh\u00e0 ph\u00e2n ph\u1ed1i \u1ee7y quy\u1ec1n). <a href=\"https:\/\/meanwellpowersupplies.com\/technical-articles\/faq\/what-are-the-requirements-of-parallel-connections-what-are-the-differences-between-parallel-and-redundant\/\">https:\/\/meanwellpowersupplies.com\/technical-articles\/faq\/what-are-the-requirements-of-parallel-connections-what-are-the-differences-between-parallel-and-redundant\/<\/a><\/li>\n <li>DigiKey. \u201cC\u1ea5u h\u00ecnh \u0111\u00fang c\u00e1ch c\u00e1c b\u1ed9 ngu\u1ed3n song song \u0111\u1ec3 chia s\u1ebb d\u00f2ng t\u1ea3i, n\u1ebfu kh\u00f4ng s\u1ebd c\u00f3 nguy c\u01a1 h\u1ec7 th\u1ed1ng b\u1ecb h\u1ecfng.\u201d 2016. <a href=\"https:\/\/www.digikey.com\/en\/articles\/properly-configure-parallel-power-supplies\">https:\/\/www.digikey.com\/en\/articles\/properly-configure-parallel-power-supplies<\/a><\/li>\n <li>OMCH. \u201cD\u1ecbch v\u1ee5 l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m.\u201d <a href=\"https:\/\/www.omch.com\/vi\/product-selection\/\">https:\/\/www.omch.com\/product-selection\/<\/a><\/li>\n <li>OMCH. \u201cC\u00e1c linh ki\u1ec7n t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p.\u201d <a href=\"https:\/\/www.omch.com\/vi\/\">https:\/\/www.omch.com\/<\/a><\/li>\n <\/ol>\n <\/article>\n<\/div>\n\n<\/body><\/html>\n\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Ngu\u1ed3n \u0111i\u1ec7n n\u1ed1i song song: Ba c\u00e1ch an to\u00e0n \u0111\u1ec3 k\u1ebft h\u1ee3p hai ngu\u1ed3n \u0111i\u1ec7n nh\u1eb1m t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ho\u1eb7c \u0111\u1ea3m b\u1ea3o d\u1ef1 ph\u00f2ng. C\u00f3 th\u1ec3 n\u1ed1i song song c\u00e1c ngu\u1ed3n \u0111i\u1ec7n kh\u00f4ng? C\u00f3, nh\u01b0ng h\u1ea7u nh\u01b0 kh\u00f4ng bao gi\u1edd theo c\u00e1ch m\u00e0 m\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng th\u1eed \u0111\u1ea7u ti\u00ean. Vi\u1ec7c n\u1ed1i c\u00e1c c\u1ef1c d\u01b0\u01a1ng c\u1ee7a hai ngu\u1ed3n \u0111i\u1ec7n th\u00f4ng th\u01b0\u1eddng l\u1ea1i v\u1edbi nhau ch\u00ednh l\u00e0 h\u00e0nh \u0111\u1ed9ng duy nh\u1ea5t c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng c\u1ea3 hai. Tuy nhi\u00ean, vi\u1ec7c k\u1ebft h\u1ee3p hai ngu\u1ed3n \u0111i\u1ec7n m\u1ed9t c\u00e1ch an to\u00e0n l\u00e0 [\u2026]<\/p>","protected":false},"author":4,"featured_media":12280,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Power Supplies in Parallel: Safe Methods for Higher Current","_seopress_titles_desc":"Learn how to connect power supplies in parallel safely using current sharing, ORing and redundancy modules for higher current or backup power.","_seopress_robots_index":"","footnotes":""},"categories":[79],"tags":[],"class_list":["post-12281","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mmlblog"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/12281","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/comments?post=12281"}],"version-history":[{"count":1,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/12281\/revisions"}],"predecessor-version":[{"id":12287,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/12281\/revisions\/12287"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/media\/12280"}],"wp:attachment":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/media?parent=12281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/categories?post=12281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/tags?post=12281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}