{"id":2424,"date":"2026-08-20T09:00:00","date_gmt":"2026-08-20T01:00:00","guid":{"rendered":"https:\/\/cnbygele.com\/blog\/active-harmonic-filter-working-principle\/"},"modified":"2026-10-10T19:06:36","modified_gmt":"2026-10-10T11:06:36","slug":"active-harmonic-filter-working-principle","status":"publish","type":"post","link":"https:\/\/cnbygele.com\/vi\/blog\/active-harmonic-filter-working-principle\/","title":{"rendered":"Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a B\u1ed9 l\u1ecdc Harmonic Ch\u1ee7 \u0111\u1ed9ng: C\u1ea3m bi\u1ebfn d\u00f2ng \u0111i\u1ec7n ngu\u1ed3n"},"content":{"rendered":"<div class=\"b2b-article\">\n<p style=\"margin:0 0 16px;line-height:1.7\">The <strong>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 l\u1ecdc s\u00f3ng h\u00e0i t\u00edch c\u1ef1c<\/strong> s\u1eed d\u1ee5ng v\u00f2ng \u0111i\u1ec1u khi\u1ec3n k\u00edn: \u0111o d\u00f2ng t\u1ea3i bi\u1ebfn d\u1ea1ng, t\u00ednh to\u00e1n c\u00e1c th\u00e0nh ph\u1ea7n kh\u00f4ng mong mu\u1ed1n \u0111\u00e3 ch\u1ecdn, \u0111i\u1ec1u khi\u1ec3n b\u1ed9 bi\u1ebfn \u0111\u1ed5i c\u00f4ng su\u1ea5t, v\u00e0 b\u01a1m d\u00f2ng b\u00f9 song song t\u1ea1i m\u1ed9t bus x\u00e1c \u0111\u1ecbnh. T\u1ea1i \u0111i\u1ec3m gi\u1edbi h\u1ea1n \u0111\u00f3, d\u00f2ng t\u1ea3i v\u00e0 d\u00f2ng b\u1ed9 l\u1ecdc x\u00e1c \u0111\u1ecbnh d\u00f2ng ngu\u1ed3n, li\u00ean k\u1ebft c\u1ea3m bi\u1ebfn, t\u1ea1o tham chi\u1ebfu, theo d\u00f5i d\u00f2ng v\u00e0 b\u01a1m shunt trong m\u1ed9t chu\u1ed7i ho\u1ea1t \u0111\u1ed9ng.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" alt=\"D\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t \u00f4 t\u00f4 v\u1edbi th\u00e2n xe \u0111\u00e3 l\u1eafp r\u00e1p\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/08\/ahf-working-featured-auto-factory.webp\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\"\/><\/figure>\n<nav class=\"b2b-toc\" style=\"background:#f5f8fa;padding:16px 20px;border-radius:8px;margin:0 0 24px\">\n<h2 id=\"contents\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">M\u1ee5c l\u1ee5c<\/h2>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\"><a href=\"#what-a-shunt-active-harmonic-filter-changes-in-the-power-system\">B\u1ed9 l\u1ecdc Harmonic Ch\u1ee7 \u0111\u1ed9ng Shunt thay \u0111\u1ed5i g\u00ec trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#step-1-the-ct-captures-the-load-current-signal\">B\u01b0\u1edbc 1: CT b\u1eaft t\u00edn hi\u1ec7u d\u00f2ng t\u1ea3i<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#step-2-the-controller-builds-a-compensation-current-reference\">B\u01b0\u1edbc 2: B\u1ed9 \u0111i\u1ec1u khi\u1ec3n x\u00e2y d\u1ef1ng tham chi\u1ebfu d\u00f2ng b\u00f9<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#step-3-the-dc-bus-and-igbt-converter-produce-filter-current\">B\u01b0\u1edbc 3: Bus DC v\u00e0 B\u1ed9 bi\u1ebfn \u0111\u1ed5i IGBT t\u1ea1o ra d\u00f2ng l\u1ecdc<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#step-4-filter-current-and-load-current-add-at-the-selected-bus\">B\u01b0\u1edbc 4: D\u00f2ng l\u1ecdc v\u00e0 d\u00f2ng t\u1ea3i c\u1ed9ng v\u00e0o t\u1ea1i bus \u0111\u00e3 ch\u1ecdn<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#why-active-cancellation-is-different-from-passive-filtering\">T\u1ea1i sao Ph\u1ea3n h\u1ed3i Ch\u1ee7 \u0111\u1ed9ng kh\u00e1c v\u1edbi L\u1ecdc th\u1ee5 \u0111\u1ed9ng<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#what-equal-and-opposite-does-not-guarantee\">Nh\u1eefng g\u00ec \u201cb\u1eb1ng v\u00e0 \u0111\u1ed1i l\u1eadp\u201d kh\u00f4ng \u0111\u1ea3m b\u1ea3o<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#how-the-cnbyg-ahf-apf-product-family-implements-the-chain\">C\u00e1ch gia \u0111\u00ecnh s\u1ea3n ph\u1ea9m CNBYG AHF\/APF th\u1ef1c hi\u1ec7n chu\u1ed7i<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#faqs\">C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<\/ul>\n<\/nav>\n<h2 id=\"what-a-shunt-active-harmonic-filter-changes-in-the-power-system\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">B\u1ed9 l\u1ecdc Harmonic Ch\u1ee7 \u0111\u1ed9ng Shunt thay \u0111\u1ed5i g\u00ec trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u1ed9t b\u1ed9 l\u1ecdc Harmonic Ch\u1ee7 \u0111\u1ed9ng shunt cung c\u1ea5p d\u00f2ng b\u00f9 song song v\u1edbi t\u1ea3i, gi\u1ea3m l\u01b0\u1ee3ng d\u00f2ng kh\u00f4ng mong mu\u1ed1n ph\u1ea3i \u0111i qua ph\u00eda ngu\u1ed3n c\u1ee7a bus \u0111\u00e3 ch\u1ecdn.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">T\u1ea3i phi tuy\u1ebfn kh\u00f4ng r\u00fat d\u00f2ng theo t\u1ef7 l\u1ec7 tr\u1ef1c ti\u1ebfp v\u1edbi \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u ngu\u1ed3n. V\u00ed d\u1ee5, m\u1ed9t m\u1ea1ch ch\u1ec9nh l\u01b0u \u1edf \u0111\u1ea7u VFD c\u00f3 th\u1ec3 r\u00fat d\u00f2ng th\u00e0nh t\u1eebng xung, do \u0111\u00f3 d\u1ea1ng s\u00f3ng d\u00f2ng t\u1ea3i ch\u1ee9a th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n c\u1ed9ng c\u00e1c th\u00e0nh ph\u1ea7n harmonic.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">D\u00f2ng harmonic l\u00e0 ph\u1ea7n li\u00ean quan \u0111\u1ebfn c\u00e1c th\u00e0nh ph\u1ea7n d\u1ea1ng s\u00f3ng tr\u00ean th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n. B\u1ed9 l\u1ecdc ch\u1ee7 \u0111\u1ed9ng shunt cung c\u1ea5p m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng ki\u1ec3m so\u00e1t c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u00e3 ch\u1ecdn thay v\u00ec y\u00eau c\u1ea7u ngu\u1ed3n ph\u00eda tr\u00ean cung c\u1ea5p t\u1ea5t c\u1ea3 ch\u00fang.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">B\u1ed9 l\u1ecdc AHF shunt l\u00e0 ngu\u1ed3n d\u00f2ng ki\u1ec3m so\u00e1t k\u1ebft n\u1ed1i b\u00ean c\u1ea1nh t\u1ea3i \u0111\u00f3. N\u00f3 kh\u00f4ng mang to\u00e0n b\u1ed9 d\u00f2ng t\u1ea3i theo chu\u1ed7i; n\u00f3 th\u00eam m\u1ed9t \u0111\u01b0\u1eddng d\u00f2ng kh\u00e1c t\u1ea1i bus \u0111\u00e3 \u0111\u01b0\u1ee3c b\u00f9.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">An <a href=\"https:\/\/en.wikipedia.org\/wiki\/Active_power_filter\" rel=\"nofollow noopener\" target=\"_blank\">b\u1ed9 l\u1ecdc c\u00f4ng su\u1ea5t ch\u1ee7 \u0111\u1ed9ng<\/a>, hay c\u00f2n g\u1ecdi l\u00e0 APF, s\u1eed d\u1ee5ng \u0111i\u1ec7n t\u1eed c\u00f4ng su\u1ea5t ki\u1ec3m so\u00e1t thay v\u00ec m\u1ea1ng th\u1ee5 \u0111\u1ed9ng c\u1ed1 \u0111\u1ecbnh; b\u00e0i vi\u1ebft n\u00e0y t\u1eadp trung v\u00e0o d\u1ea1ng d\u00f2ng shunt.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Ch\u1ecdn quy \u01b0\u1edbc d\u1ea5u tr\u01b0\u1edbc khi \u0111\u1ecdc c\u00e2n b\u1eb1ng d\u00f2ng. \u0110\u1ecbnh ngh\u0129a d\u00f2ng ngu\u1ed3n v\u00e0 d\u00f2ng b\u1ed9 l\u1ecdc l\u00e0 d\u00f2ng v\u00e0o bus \u0111\u00e3 \u0111\u01b0\u1ee3c b\u00f9, v\u1edbi d\u00f2ng t\u1ea3i r\u1eddi kh\u1ecfi h\u01b0\u1edbng t\u1ea3i.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\"><code>i_source + i_filter = i_load<\/code><\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">T\u01b0\u01a1ng \u0111\u01b0\u01a1ng, <code>i_source = i_load - i_filter<\/code>. \u0110\u1ed1i v\u1edbi th\u00e0nh ph\u1ea7n t\u1ea3i m\u1ee5c ti\u00eau, quy \u01b0\u1edbc tham chi\u1ebfu nh\u00e1nh n\u00e0y g\u00e1n th\u00e0nh ph\u1ea7n b\u1ed9 l\u1ecdc c\u00f9ng d\u1ea5u \u0111\u1ea1i s\u1ed1 v\u1edbi th\u00e0nh ph\u1ea7n t\u1ea3i; ph\u00e9p tr\u1eeb th\u1ec3 hi\u1ec7n b\u1ed9 l\u1ecdc cung c\u1ea5p th\u00e0nh ph\u1ea7n \u0111\u00f3 t\u1ea1i ch\u1ed7.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Xem x\u00e9t nhi\u1ec1u b\u1ed9 ch\u1ec9nh l\u01b0u VFD k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t bus nh\u00e0 m\u00e1y. C\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n ti\u1ebfp t\u1ee5c r\u00fat d\u00f2ng \u0111i\u1ec7n theo y\u00eau c\u1ea7u c\u1ee7a qu\u00e1 tr\u00ecnh c\u1ee7a ch\u00fang, trong khi AHF cung c\u1ea5p c\u00e1c th\u00e0nh ph\u1ea7n d\u00f2ng h\u00e0i v\u00e0 d\u00f2ng ph\u1ea3n kh\u00e1ng \u0111\u01b0\u1ee3c ch\u1ecdn t\u1ea1i ch\u1ed7; c\u00e1c d\u00e2y d\u1eabn ph\u00eda tr\u00ean c\u00f9ng sau \u0111\u00f3 mang ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a t\u1ed5ng t\u1ea1i bus \u0111\u00f3.<\/p>\n<div aria-label=\"B\u1ea3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 cu\u1ed9n\" class=\"b2b-table-scroll\" role=\"region\" style=\"width:100%;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 18px\" tabindex=\"0\">\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">S\u1ed1 l\u01b0\u1ee3ng ho\u1eb7c c\u00f4ng vi\u1ec7c ch\u1ee9c n\u0103ng<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">N\u00f3 \u0111\u1ea1i di\u1ec7n cho<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">T\u1ea1i sao n\u00f3 ph\u1ea3i gi\u1eef ri\u00eang bi\u1ec7t<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u00f2ng t\u1ea3i \u0111o \u0111\u01b0\u1ee3c<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">T\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n quan s\u00e1t b\u1edfi c\u1ea3m bi\u1ebfn t\u1ea1i m\u1ed9t ranh gi\u1edbi x\u00e1c \u0111\u1ecbnh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">N\u00f3 l\u00e0 \u0111\u1ea7u v\u00e0o cho b\u1ed9 \u0111i\u1ec1u khi\u1ec3n, kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 \u0111i\u1ec1u ch\u1ec9nh tr\u1ef1c ti\u1ebfp<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Tham chi\u1ebfu d\u00f2ng b\u00f9<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">M\u1ee5c ti\u00eau thay \u0111\u1ed5i theo th\u1eddi gian c\u1ee7a b\u1ed9 \u0111i\u1ec1u khi\u1ec3n<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">N\u00f3 n\u00f3i cho b\u1ed9 chuy\u1ec3n \u0111\u1ed5i n\u00ean s\u1ea3n xu\u1ea5t g\u00ec ti\u1ebfp theo<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110i\u1ec1u ch\u1ec9nh bus DC<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Nhi\u1ec7m v\u1ee5 duy tr\u00ec tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng DC c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">N\u00f3 h\u1ed7 tr\u1ee3 t\u1ed5ng h\u1ee3p d\u00f2ng \u0111i\u1ec7n nh\u01b0ng kh\u00f4ng ph\u1ea3i d\u00f2ng AC \u0111\u01b0\u1ee3c ti\u00eam v\u00e0o<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u00f2ng filter th\u1ef1c t\u1ebf<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u00f2ng do b\u1ed9 chuy\u1ec3n \u0111\u1ed5i chuy\u1ec3n m\u1ea1ch t\u1ea1o ra<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">N\u00f3 ph\u1ea3i theo d\u00f5i tham chi\u1ebfu \u0111\u1ee7 g\u1ea7n \u0111\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn bus<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u00f2ng ngu\u1ed3n sinh ra<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">T\u1ed5ng s\u1ed1 nh\u00ecn th\u1ea5y \u1edf ph\u00eda cung c\u1ea5p c\u1ee7a ranh gi\u1edbi \u0111\u00e3 ch\u1ecdn<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110\u00e2y l\u00e0 n\u01a1i m\u1ee5c ti\u00eau b\u00f9 tr\u1eeb \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110o l\u01b0\u1eddng, l\u1ec7nh \u0111i\u1ec1u khi\u1ec3n, d\u00f2ng \u0111i\u1ec7n bi\u1ebfn \u0111\u1ed5i v\u00e0 d\u00f2ng \u0111i\u1ec7n ngu\u1ed3n v\u1eabn l\u00e0 c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng ri\u00eang bi\u1ec7t trong su\u1ed1t nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a AHF.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u1ecdc nh\u01b0 s\u01a1 \u0111\u1ed3 b\u1ed9 l\u1ecdc h\u00e0i ho\u1ea1t \u0111\u1ed9ng, tr\u00ecnh t\u1ef1 ch\u1ea1y t\u1eeb t\u00edn hi\u1ec7u d\u00f2ng t\u1ea3i \u0111o \u0111\u01b0\u1ee3c \u0111\u1ebfn tham chi\u1ebfu c\u1ee7a b\u1ed9 \u0111i\u1ec1u khi\u1ec3n, d\u00f2ng \u0111i\u1ec7n b\u1ed9 l\u1ecdc th\u1ef1c t\u1ebf, v\u00e0 d\u00f2ng \u0111i\u1ec7n ngu\u1ed3n sinh ra.<\/p>\n<h2 id=\"step-1-the-ct-captures-the-load-current-signal\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">B\u01b0\u1edbc 1: CT b\u1eaft t\u00edn hi\u1ec7u d\u00f2ng t\u1ea3i<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Bi\u1ebfn d\u00f2ng \u0111i\u1ec7n cung c\u1ea5p cho b\u1ed9 \u0111i\u1ec1u khi\u1ec3n m\u1ed9t bi\u1ec3u di\u1ec5n v\u1ec1 d\u00f2ng \u0111i\u1ec7n t\u1ea1i ranh gi\u1edbi \u0111i\u1ec7n t\u1eed \u0111\u1ecbnh ngh\u0129a; ch\u00ednh bi\u1ebfn d\u00f2ng \u0111i\u1ec7n CT kh\u00f4ng lo\u1ea1i b\u1ecf h\u00e0i ho\u1eb7c ch\u00e8n d\u00f2ng \u0111i\u1ec7n hi\u1ec7u ch\u1ec9nh.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">V\u1ecb tr\u00ed c\u1ee7a bi\u1ebfn d\u00f2ng \u0111i\u1ec7n CT quy\u1ebft \u0111\u1ecbnh b\u1ed9 \u0111i\u1ec1u khi\u1ec3n c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y g\u00ec. M\u1ed9t CT c\u1ee7a \u0111\u01b0\u1eddng c\u1ea5p v\u00e0 m\u1ed9t CT c\u1ee7a bus ch\u00ednh \u0111\u1ea1i di\u1ec7n cho c\u00e1c ranh gi\u1edbi b\u00f9 tr\u1eeb kh\u00e1c nhau ngay c\u1ea3 khi ph\u1ea7n c\u1ee9ng c\u1ea3m bi\u1ebfn gi\u1ed1ng nhau.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u1ed1i chi\u1ec1u v\u00e0 s\u1ef1 ph\u00f9 h\u1ee3p pha gi\u1eef g\u00ecn h\u01b0\u1edbng t\u00edn hi\u1ec7u d\u1ef1 \u0111\u1ecbnh. C\u00e1c <a href=\"https:\/\/cnbygele.com\/vi\/blog\/active-harmonic-filter-ct-placement-wiring\/\">h\u01b0\u1edbng d\u1eabn l\u1eafp \u0111\u1eb7t v\u00e0 d\u00e2y d\u1eabn c\u1ee7a bi\u1ebfn d\u00f2ng \u0111i\u1ec7n b\u1ed9 l\u1ecdc h\u00e0i ho\u1ea1t \u0111\u1ed9ng<\/a> k\u1ebft n\u1ed1i c\u00e1c quy\u1ebft \u0111\u1ecbnh \u0111\u00f3 v\u1edbi t\u1ef7 l\u1ec7, \u0111\u1ecbnh tuy\u1ebfn, v\u00e0 b\u1eb1ng ch\u1ee9ng v\u1eadn h\u00e0nh tr\u00ean s\u01a1 \u0111\u1ed3 m\u1ed9t d\u00f2ng.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi m\u1edbi \u0111\u1ecdc s\u01a1 \u0111\u1ed3 kh\u1ed1i c\u1ee7a nh\u00e0 cung c\u1ea5p, s\u1ef1 ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng l\u00e0 \u0111\u01a1n gi\u1ea3n: m\u0169i t\u00ean t\u1eeb bi\u1ebfn d\u00f2ng \u0111i\u1ec7n \u0111\u1ebfn b\u1ed9 \u0111i\u1ec1u khi\u1ec3n l\u00e0 th\u00f4ng tin. \u0110\u01b0\u1eddng d\u00f2ng \u0111i\u1ec7n l\u1edbn t\u1eeb b\u1ed9 bi\u1ebfn \u0111\u1ed5i \u0111\u1ebfn bus l\u00e0 h\u00e0nh \u0111\u1ed9ng b\u00f9 tr\u1eeb.<\/p>\n<h2 id=\"step-2-the-controller-builds-a-compensation-current-reference\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">B\u01b0\u1edbc 2: B\u1ed9 \u0111i\u1ec1u khi\u1ec3n x\u00e2y d\u1ef1ng tham chi\u1ebfu d\u00f2ng b\u00f9<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">B\u1ed9 \u0111i\u1ec1u khi\u1ec3n x\u1eed l\u00fd c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111i\u1ec7n \u0111o \u0111\u01b0\u1ee3c v\u00e0 x\u00e2y d\u1ef1ng tham chi\u1ebfu d\u00f2ng \u0111i\u1ec7n b\u00f9 tr\u1eeb: d\u1ea1ng s\u00f3ng m\u1ee5c ti\u00eau m\u00e0 giai \u0111o\u1ea1n c\u00f4ng su\u1ea5t n\u00ean cung c\u1ea5p ti\u1ebfp theo.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">V\u1ec1 m\u1eb7t ph\u1ea7n c\u1ee9ng, m\u1ed9t b\u1ed9 x\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1 ho\u1eb7c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n th\u1eddi gian th\u1ef1c kh\u00e1c bi\u1ebfn \u0111\u1ed5i \u0111\u1ea7u v\u00e0o c\u1ea3m bi\u1ebfn th\u00e0nh d\u00f2ng \u0111i\u1ec7n tham chi\u1ebfu. Tham chi\u1ebfu \u0111\u00f3 l\u00e0 m\u1ed9t l\u1ec7nh \u0111i\u1ec1u khi\u1ec3n, ch\u01b0a ph\u1ea3i d\u00f2ng \u0111i\u1ec7n v\u1eadt l\u00fd ch\u1ea3y trong nh\u00e1nh b\u1ed9 l\u1ecdc.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00f4ng vi\u1ec7c \u0111\u00f3 ch\u00ednh x\u00e1c h\u01a1n \u201cph\u00e1t hi\u1ec7n h\u00e0i h\u00f2a\u201d. B\u1ed9 \u0111i\u1ec1u khi\u1ec3n ph\u1ea3i ph\u00e2n bi\u1ec7t c\u00e1c th\u00e0nh ph\u1ea7n d\u00f2ng \u0111i\u1ec7n li\u00ean quan \u0111\u1ebfn m\u1ee5c ti\u00eau \u0111\u00e3 c\u1ea5u h\u00ecnh, t\u1ea1o th\u00e0nh m\u1ed9t tham chi\u1ebfu v\u1edbi d\u1ea5u hi\u1ec7u y\u00eau c\u1ea7u, v\u00e0 li\u00ean t\u1ee5c c\u1eadp nh\u1eadt l\u1ec7nh khi t\u1ea3i thay \u0111\u1ed5i.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00e1c thi\u1ebft k\u1ebf kh\u00e1c nhau c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p tham chi\u1ebfu \u0111\u1ed3ng b\u1ed9, ph\u01b0\u01a1ng ph\u00e1p p-q t\u1ee9c th\u1eddi, ph\u00e2n t\u00edch ph\u1ed5, ho\u1eb7c ki\u1ebfn tr\u00fac \u0111i\u1ec1u khi\u1ec3n kh\u00e1c. Nh\u1eefng t\u00ean thu\u1eadt to\u00e1n \u0111\u00f3 m\u00f4 t\u1ea3 c\u00e1ch t\u00ednh to\u00e1n m\u1ee5c ti\u00eau; ch\u00fang kh\u00f4ng thay \u0111\u1ed5i tr\u00ecnh t\u1ef1 ch\u1ee9c n\u0103ng chung g\u1ed3m \u0111o l\u01b0\u1eddng, t\u1ea1o tham chi\u1ebfu v\u00e0 theo d\u00f5i d\u00f2ng \u0111i\u1ec7n.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u1ed9t k\u1ef9 s\u01b0 so s\u00e1nh m\u1ed9t s\u01a1 \u0111\u1ed3 kh\u1ed1i \u0111\u01b0\u1ee3c g\u1eafn nh\u00e3n <code>dq0<\/code> v\u1edbi m\u1ed9t s\u01a1 \u0111\u1ed3 kh\u00e1c \u0111\u01b0\u1ee3c g\u1eafn nh\u00e3n <code>p-q<\/code> do \u0111\u00f3 n\u00ean \u0111\u1eb7t ra hai c\u00e2u h\u1ecfi ri\u00eang bi\u1ec7t. M\u1ee5c ti\u00eau d\u00f2ng \u0111i\u1ec7n \u0111ang \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n l\u00e0 g\u00ec, v\u00e0 b\u1ed9 bi\u1ebfn \u0111\u1ed5i theo d\u00f5i tham chi\u1ebfu \u0111\u00f3 nh\u01b0 th\u1ebf n\u00e0o d\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n t\u1ea3i v\u00e0 cung c\u1ea5p d\u1ef1 ki\u1ebfn?<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u01af\u1edbc l\u01b0\u1ee3ng t\u00edn hi\u1ec7u b\u00f9, \u0111i\u1ec1u ch\u1ec9nh bus DC, v\u00e0 \u0111i\u1ec1u khi\u1ec3n d\u00f2ng \u0111i\u1ec7n c\u1ee7a b\u1ed9 bi\u1ebfn \u0111\u1ed5i li\u00ean quan nh\u01b0ng kh\u00e1c nhau. C\u00f9ng nhau ch\u00fang t\u1ea1o th\u00e0nh nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 l\u1ecdc c\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng ngay c\u1ea3 khi thu\u1eadt to\u00e1n n\u1ed9i b\u1ed9 v\u00e0 ph\u1ea7n c\u1ee9ng th\u1ef1c hi\u1ec7n kh\u00e1c nhau.<\/p>\n<h2 id=\"step-3-the-dc-bus-and-igbt-converter-produce-filter-current\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">B\u01b0\u1edbc 3: Bus DC v\u00e0 B\u1ed9 bi\u1ebfn \u0111\u1ed5i IGBT t\u1ea1o ra d\u00f2ng l\u1ecdc<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110i\u1ec1u khi\u1ec3n bus DC h\u1ed7 tr\u1ee3 m\u1ed9t b\u1ed9 bi\u1ebfn \u0111\u1ed5i chuy\u1ec3n m\u1ea1ch bi\u1ebfn \u0111\u1ed5i tham chi\u1ebfu k\u1ef9 thu\u1eadt s\u1ed1 th\u00e0nh d\u00f2ng \u0111i\u1ec7n l\u1ecdc xoay chi\u1ec1u th\u1ef1c tr\u00ean bus \u0111\u00e3 \u0111\u01b0\u1ee3c b\u00f9.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Bus DC l\u00e0 b\u1ed9 \u0111\u1ec7m n\u0103ng l\u01b0\u1ee3ng n\u1ed9i b\u1ed9 \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh c\u1ee7a b\u1ed9 bi\u1ebfn \u0111\u1ed5i. N\u00f3 cung c\u1ea5p kh\u00f4ng gian \u0111i\u1ec7n c\u1ea7n thi\u1ebft cho giai \u0111o\u1ea1n c\u00f4ng su\u1ea5t \u0111\u1ec3 \u0111\u1ecbnh h\u00ecnh d\u00f2ng \u0111i\u1ec7n, trong khi m\u1ed9t ch\u1ee9c n\u0103ng \u0111i\u1ec1u khi\u1ec3n ri\u00eang bi\u1ec7t gi\u1eef cho \u0111i\u1ec7n \u00e1p li\u00ean k\u1ebft DC g\u1ea7n m\u1ee5c ti\u00eau v\u1eadn h\u00e0nh c\u1ee7a n\u00f3.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Bi\u1ebfn t\u1ea7n IGBT kh\u00f4ng \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t c\u00f4ng t\u1eafc \u0111i\u1ec7n t\u1eed b\u1eadt\/t\u1eaft cho t\u1ee7 \u0111i\u1ec7n. C\u00e1c ch\u00e2n b\u00e1n d\u1eabn c\u1ee7a n\u00f3 chuy\u1ec3n m\u1ea1ch d\u01b0\u1edbi s\u1ef1 ki\u1ec3m so\u00e1t d\u00f2ng \u0111i\u1ec7n \u0111\u1ec3 \u0111\u1ea7u ra c\u1ee7a b\u1ed9 bi\u1ebfn \u0111\u1ed5i theo sau l\u1ec7nh d\u00f2ng b\u00f9 thay \u0111\u1ed5i.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u00e2y c\u0169ng l\u00e0 l\u00fd do t\u1ea1i sao n\u00f3i AHF \u201cl\u01b0u tr\u1eef h\u00e0i h\u00f2a\u201d mang l\u1ea1i m\u00f4 h\u00ecnh t\u01b0 duy sai. B\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u01b0\u1edbc l\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n mong mu\u1ed1n, v\u00e0 b\u1ed9 bi\u1ebfn \u0111\u1ed5i li\u00ean t\u1ee5c trao \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u1edbi h\u1ec7 th\u1ed1ng AC trong khi t\u1ed5ng h\u1ee3p d\u00f2ng \u0111i\u1ec7n \u0111\u00f3; kh\u00f4ng c\u00f3 kho ch\u1ee9a c\u00e1c d\u1ea1ng s\u00f3ng h\u00e0i \u0111\u00e3 b\u1eaft gi\u1eef ch\u1edd \u0111\u01b0\u1ee3c x\u1ea3 ra.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Theo d\u00f5i d\u00f2ng \u0111i\u1ec7n \u0111\u00f3ng v\u00f2ng l\u1eb7p gi\u1eefa l\u1ec7nh v\u00e0 h\u00e0nh \u0111\u1ed9ng. B\u1ed9 \u0111i\u1ec1u khi\u1ec3n quan s\u00e1t ph\u1ea3n \u1ee9ng \u0111i\u1ec7n, \u0111i\u1ec1u ch\u1ec9nh chuy\u1ec3n m\u1ea1ch c\u1ee7a b\u1ed9 bi\u1ebfn \u0111\u1ed5i, v\u00e0 c\u1eadp nh\u1eadt l\u1ec7nh khi t\u1ea3i phi tuy\u1ebfn thay \u0111\u1ed5i, \u0111\u1ec3 d\u00f2ng l\u1ecdc th\u1ef1c t\u1ebf theo sau tham chi\u1ebfu thay v\u00ec gi\u1eef nguy\u00ean d\u1ea1ng s\u00f3ng c\u1ed1 \u0111\u1ecbnh.<\/p>\n<h2 id=\"step-4-filter-current-and-load-current-add-at-the-selected-bus\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">B\u01b0\u1edbc 4: D\u00f2ng l\u1ecdc v\u00e0 d\u00f2ng t\u1ea3i c\u1ed9ng v\u00e0o t\u1ea1i bus \u0111\u00e3 ch\u1ecdn<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">V\u1edbi t\u1ea5t c\u1ea3 c\u00e1c m\u0169i t\u00ean nh\u00e1nh h\u01b0\u1edbng theo nh\u01b0 \u0111\u00e3 \u0111\u1ecbnh ngh\u0129a \u1edf tr\u00ean, s\u1ef1 tri\u1ec7t ti\u00eau x\u1ea3y ra th\u00f4ng qua t\u1ed5ng h\u1ee3p d\u00f2ng \u0111i\u1ec7n t\u1ea1i bus \u0111\u00e3 ch\u1ecdn: b\u1ed9 l\u1ecdc t\u00e1i t\u1ea1o c\u00e1c th\u00e0nh ph\u1ea7n d\u00f2ng t\u1ea3i \u0111\u00e3 ch\u1ecdn v\u1edbi d\u1ea5u hi\u1ec7u \u0111\u1ea1i s\u1ed1 gi\u1ed1ng nhau, v\u00ec v\u1eady vi\u1ec7c tr\u1eeb d\u00f2ng l\u1ecdc \u0111i l\u00e0m gi\u1ea3m \u0111\u00f3ng g\u00f3p c\u1ee7a ch\u00fang v\u00e0o d\u00f2ng ngu\u1ed3n.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Gi\u1ea3 s\u1eed d\u00f2ng t\u1ea3i ch\u1ee9a m\u1ed9t th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n c\u1ed9ng v\u1edbi m\u1ed9t s\u1ed1 th\u00e0nh ph\u1ea7n h\u00e0i h\u00f2a. Ngu\u1ed3n v\u1eabn cung c\u1ea5p c\u00f4ng su\u1ea5t c\u01a1 b\u1ea3n y\u00eau c\u1ea7u b\u1edfi qu\u00e1 tr\u00ecnh, nh\u01b0ng nh\u00e1nh b\u1ed9 l\u1ecdc c\u00f3 th\u1ec3 mang m\u1ed9t \u0111\u1ed1i t\u00e1c ki\u1ec3m so\u00e1t c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n kh\u00f4ng mong mu\u1ed1n \u0111\u00e3 ch\u1ecdn.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u1ee5m t\u1eeb quen thu\u1ed9c \u201cb\u1eb1ng v\u00e0 \u0111\u1ed1i ngh\u1ecbch\u201d gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng d\u00f2ng t\u1ea3i v\u00e0 d\u00f2ng l\u1ecdc \u0111\u01b0\u1ee3c v\u1ebd b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t h\u01b0\u1edbng tham chi\u1ebfu to\u00e0n c\u1ee5c chung. Theo quy \u01b0\u1edbc tham chi\u1ebfu nh\u00e1nh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf \u0111\u00e2y, hai gi\u00e1 tr\u1ecb th\u00e0nh ph\u1ea7n c\u00f3 d\u1ea5u hi\u1ec7u \u0111\u1ea1i s\u1ed1 gi\u1ed1ng nhau v\u00ec c\u00e1c m\u0169i t\u00ean nh\u00e1nh t\u1ea3i v\u00e0 b\u1ed9 l\u1ecdc ch\u1ec9 v\u1ec1 ph\u00eda \u0111\u1ed1i di\u1ec7n nhau so v\u1edbi bus.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110i\u1ec3m k\u1ebft n\u1ed1i chung, hay PCC, l\u00e0 ranh gi\u1edbi \u0111i\u1ec7n \u0111\u00e3 th\u1ecfa thu\u1eadn n\u01a1i nh\u00f3m \u0111\u00e1nh gi\u00e1 m\u1ed1i quan h\u1ec7 gi\u1eefa d\u00f2ng ngu\u1ed3n, t\u1ea3i v\u00e0 d\u00f2ng l\u1ecdc. N\u00f3i c\u00e1ch kh\u00e1c, \u0111\u00f3 l\u00e0 bus n\u01a1i c\u00e2u h\u1ecfi tr\u1edf th\u00e0nh: d\u00f2ng \u0111i\u1ec7n m\u00e0 ngu\u1ed3n hi\u1ec7n t\u1ea1i nh\u00ecn th\u1ea5y l\u00e0 g\u00ec?<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00e2n b\u1eb1ng d\u00f2ng \u0111i\u1ec7n c\u0169ng tr\u1ea3 l\u1eddi m\u1ed9t c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn trong c\u1ed9ng \u0111\u1ed3ng v\u1ec1 n\u01a1i c\u00e1c h\u00e0i h\u00f2a \u0111i. B\u1ed9 l\u1ecdc kh\u00f4ng di chuy\u1ec3n m\u1ed9t g\u00f3i nhi\u1ec5u \u0111\u00e3 l\u01b0u tr\u1eef \u0111i n\u01a1i kh\u00e1c; n\u00f3 t\u1ea1o ra m\u1ed9t d\u00f2ng \u0111i\u1ec7n ki\u1ec3m so\u00e1t c\u00f3 c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u00e3 ch\u1ecdn gi\u1ea3m c\u00e1c th\u00e0nh ph\u1ea7n t\u01b0\u01a1ng \u1ee9ng trong t\u1ed5ng d\u00f2ng ph\u00eda ngu\u1ed3n.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Khi t\u1ea3i thay \u0111\u1ed5i, d\u1ea1ng s\u00f3ng \u0111o \u0111\u01b0\u1ee3c thay \u0111\u1ed5i, tham chi\u1ebfu \u0111\u01b0\u1ee3c t\u00ednh l\u1ea1i, v\u00e0 \u0111\u1ea7u ra c\u1ee7a b\u1ed9 bi\u1ebfn \u0111\u1ed5i theo sau. C\u1eadp nh\u1eadt \u0111\u1ed9ng l\u00e0 \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa m\u1ed9t ngu\u1ed3n d\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng c\u00f3 ki\u1ec3m so\u00e1t v\u00e0 m\u1ed9t m\u1ea1ng l\u01b0\u1edbi \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh c\u1ed1 \u0111\u1ecbnh.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" alt=\"Ng\u1eef c\u1ea3nh t\u1ea3i phi tuy\u1ebfn c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 l\u1ecdc h\u00e0i ho\u1ea1t \u0111\u1ed9ng\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/08\/ahf-working-load-context.webp\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\"\/><\/figure>\n<h2 id=\"why-active-cancellation-is-different-from-passive-filtering\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">T\u1ea1i sao Ph\u1ea3n h\u1ed3i Ch\u1ee7 \u0111\u1ed9ng kh\u00e1c v\u1edbi L\u1ecdc th\u1ee5 \u0111\u1ed9ng<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">B\u1ed9 l\u1ecdc h\u00e0i h\u00f2a ch\u1ee7 \u0111\u1ed9ng v\u00e0 th\u1ee5 \u0111\u1ed9ng ho\u1ea1t \u0111\u1ed9ng qua c\u00e1c c\u01a1 ch\u1ebf v\u1eadt l\u00fd kh\u00e1c nhau: b\u1ed9 l\u1ecdc h\u00e0i h\u00f2a ch\u1ee7 \u0111\u1ed9ng \u0111o l\u01b0\u1eddng v\u00e0 t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n bi\u1ebfn \u0111\u1ed5i, trong khi b\u1ed9 l\u1ecdc th\u1ee5 \u0111\u1ed9ng s\u1eed d\u1ee5ng cu\u1ed9n c\u1ea3m, t\u1ee5 \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n tr\u1edf \u0111\u1ec3 t\u1ea1o ra c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n tr\u1edf kh\u00e1ng ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ea7n s\u1ed1.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Ph\u00e2n bi\u1ec7t \u0111\u00f3 gi\u1ea3i quy\u1ebft c\u00e2u h\u1ecfi quen thu\u1ed9c, \u201c<a href=\"https:\/\/www.reddit.com\/r\/ElectricalEngineering\/comments\/768ji4\/difference_between_capacitor_banks_svc_and_facts\/\" rel=\"nofollow noopener\" target=\"_blank\">B\u1ed9 l\u1ecdc h\u00e0i h\u00f2a c\u00f3 ph\u1ea3i l\u00e0 ng\u00e2n h\u00e0ng t\u1ee5 \u0111i\u1ec7n kh\u00f4ng?<\/a>\u201d M\u1ed9t ng\u00e2n h\u00e0ng t\u1ee5 \u0111i\u1ec7n c\u00f3 th\u1ec3 cung c\u1ea5p c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng, v\u00e0 m\u1ed9t b\u1ed9 l\u1ecdc th\u1ee5 \u0111\u1ed9ng \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh c\u00f3 th\u1ec3 bao g\u1ed3m t\u1ee5 \u0111i\u1ec7n, nh\u01b0ng kh\u00f4ng t\u1ef1 \u0111\u1ed9ng tr\u1edf th\u00e0nh b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec1u khi\u1ec3n nh\u01b0 \u0111\u00e3 m\u00f4 t\u1ea3 \u1edf tr\u00ean.<\/p>\n<div aria-label=\"B\u1ea3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 cu\u1ed9n\" class=\"b2b-table-scroll\" role=\"region\" style=\"width:100%;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 18px\" tabindex=\"0\">\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">\u0110i\u1ec3m so s\u00e1nh<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">B\u1ed9 l\u1ecdc h\u00e0i h\u00f2a ch\u1ee7 \u0111\u1ed9ng song song<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">B\u1ed9 l\u1ecdc h\u00e0i h\u00f2a th\u1ee5 \u0111\u1ed9ng \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">K\u1ebft n\u1ed1i v\u00e0 ho\u1ea1t \u0111\u1ed9ng<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">K\u1ebft n\u1ed1i song song v\u00e0 ti\u00eam d\u00f2ng \u0111i\u1ec7n \u0111i\u1ec1u khi\u1ec3n<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Cung c\u1ea5p \u0111\u01b0\u1eddng truy\u1ec1n tr\u1edf kh\u00e1ng ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ea7n s\u1ed1 th\u00f4ng qua c\u00e1c th\u00e0nh ph\u1ea7n th\u1ee5 \u0111\u1ed9ng<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ph\u1ea3n \u1ee9ng v\u1edbi t\u1ea3i thay \u0111\u1ed5i<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">T\u00ednh to\u00e1n l\u1ea1i v\u00e0 theo d\u00f5i tham chi\u1ebfu d\u00f2ng \u0111i\u1ec7n thay \u0111\u1ed5i<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp b\u1edfi gi\u00e1 tr\u1ecb th\u00e0nh ph\u1ea7n v\u00e0 t\u01b0\u01a1ng t\u00e1c h\u1ec7 th\u1ed1ng<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ch\u1ee7 y\u1ebfu \u0111i\u1ec1u ch\u1ec9nh ki\u1ec3m so\u00e1t<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u00f2ng \u0111i\u1ec7n c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i theo d\u00f5i tham chi\u1ebfu t\u00ednh to\u00e1n<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Tr\u1edf kh\u00e1ng m\u1ea1ng h\u00ecnh th\u00e0nh \u0111\u01b0\u1eddng \u0111i c\u1ee7a c\u00e1c t\u1ea7n s\u1ed1 \u0111\u00e3 ch\u1ecdn<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ph\u1ee5 thu\u1ed9c thi\u1ebft k\u1ebf ch\u00ednh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ranh gi\u1edbi \u0111o l\u01b0\u1eddng, m\u1ee5c ti\u00eau \u0111i\u1ec1u khi\u1ec3n, c\u00f4ng su\u1ea5t d\u00f2ng \u0111i\u1ec7n, \u0111\u1ed9ng l\u1ef1c c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i, v\u00e0 t\u00edch h\u1ee3p<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">T\u1ea7n s\u1ed1 \u0111i\u1ec1u ch\u1ec9nh, x\u1ebfp h\u1ea1ng th\u00e0nh ph\u1ea7n, tr\u1edf kh\u00e1ng m\u1ea1ng, c\u1ed9ng h\u01b0\u1edfng, v\u00e0 \u0111i\u1ec1u ki\u1ec7n chuy\u1ec3n m\u1ea1ch<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin:0 0 16px;line-height:1.7\">Thi\u1ebft b\u1ecb ho\u1ea1t \u0111\u1ed9ng v\u00e0 thi\u1ebft b\u1ecb th\u1ee5 \u0111\u1ed9ng c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u1ed1i h\u1ee3p trong c\u00f9ng m\u1ed9t c\u01a1 s\u1edf v\u00ec m\u1ed7i lo\u1ea1i ho\u1ea1t \u0111\u1ed9ng qua m\u1ed9t c\u01a1 ch\u1ebf \u0111i\u1ec7n kh\u00e1c nhau.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh l\u1ef1a ch\u1ecdn \u0111\u1ea7y \u0111\u1ee7 \u2014 bao g\u1ed3m \u0111i\u1ec1u ch\u1ec9nh, c\u1ed9ng h\u01b0\u1edfng, thay \u0111\u1ed5i h\u00e0nh vi t\u1ea3i, v\u00e0 c\u00e1c \u0111\u00e1nh \u0111\u1ed5i trong l\u1eafp \u0111\u1eb7t \u2014 s\u1eed d\u1ee5ng <a href=\"https:\/\/cnbygele.com\/vi\/blog\/active-harmonic-filter-vs-passive-harmonic-filter\/\">b\u1ed9 l\u1ecdc h\u00e0i ho\u1ea1t \u0111\u1ed9ng so v\u1edbi b\u1ed9 l\u1ecdc h\u00e0i th\u1ee5 \u0111\u1ed9ng<\/a>.<\/p>\n<h2 id=\"what-equal-and-opposite-does-not-guarantee\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">Nh\u1eefng g\u00ec \u201cb\u1eb1ng v\u00e0 \u0111\u1ed1i l\u1eadp\u201d kh\u00f4ng \u0111\u1ea3m b\u1ea3o<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u201cB\u1eb1ng v\u00e0 \u0111\u1ed1i ngh\u1ecbch\u201d m\u00f4 t\u1ea3 m\u1ed1i quan h\u1ec7 c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n v\u1eadt l\u00fd khi c\u1ea3 hai d\u00f2ng \u0111i\u1ec7n chia s\u1ebb m\u1ed9t h\u01b0\u1edbng tham chi\u1ebfu to\u00e0n c\u1ea7u; n\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 quy t\u1eafc \u0111\u1ea1i s\u1ed1 cho c\u00e1c m\u0169i t\u00ean nh\u00e1nh \u0111\u00e3 s\u1eed d\u1ee5ng \u1edf tr\u00ean. M\u1eabu nhi\u1ec5u c\u00f2n l\u1ea1i v\u1eabn ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea3m bi\u1ebfn, d\u00f2ng \u0111i\u1ec7n b\u00f9 c\u00f3 s\u1eb5n, ph\u1ea3n h\u1ed3i c\u1ee7a b\u1ed9 \u0111i\u1ec1u khi\u1ec3n, \u0111i\u1ec1u ki\u1ec7n m\u1ea1ng l\u01b0\u1edbi v\u00e0 tr\u1ea1ng th\u00e1i t\u1ea3i.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u1ee9c \u0111\u1ecdc \u0111\u1ed3ng h\u1ed3 thay \u0111\u1ed5i theo \u0111i\u1ec3m \u0111o v\u00e0 tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng. Do \u0111\u00f3, k\u1ebft qu\u1ea3 t\u1ea1i m\u1ed9t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n kh\u00f4ng th\u1ec3 gi\u1ea3i quy\u1ebft m\u1ed9t \u0111i\u1ec3m PCC kh\u00e1c ho\u1eb7c tr\u1ea1ng th\u00e1i t\u1ea3i kh\u00e1c.<\/p>\n<blockquote>\n<p style=\"margin:0 0 16px;line-height:1.7\"><strong>Quan tr\u1ecdng:<\/strong> M\u1ee9c \u0111\u1ecdc d\u00f2ng h\u00e0i th\u1ea5p h\u01a1n t\u1ea1i m\u1ed9t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n kh\u00f4ng ph\u1ea3i l\u00e0 b\u1eb1ng ch\u1ee9ng cho th\u1ea5y v\u1ecb tr\u00ed \u0111\u1eb7t CT, c\u00f4ng su\u1ea5t b\u1ed9 l\u1ecdc ho\u1eb7c m\u1ee5c ti\u00eau ch\u1ea5p nh\u1eadn PCC \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh \u2014 h\u00e3y li\u00ean k\u1ebft k\u1ebft qu\u1ea3 v\u1edbi gi\u1edbi h\u1ea1n \u0111o \u0111\u00e3 \u0111\u1ecbnh ngh\u0129a, tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng ti\u00eau bi\u1ec3u, d\u00f2ng b\u00f9 c\u00f3 s\u1eb5n v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ch\u1ea5p nh\u1eadn \u0111\u00e3 th\u1ecfa thu\u1eadn.<\/p>\n<\/blockquote>\n<p style=\"margin:0 0 16px;line-height:1.7\">Bi\u1ebfn d\u1ea1ng h\u00e0i t\u1ed5ng th\u1ec3, hay THD, l\u00e0 m\u1ed9t t\u00f3m t\u1eaft h\u1eefu \u00edch v\u1ec1 n\u1ed9i dung h\u00e0i trong d\u1ea1ng s\u00f3ng. N\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e2u tr\u1ea3 l\u1eddi \u0111\u1ed9c l\u1eadp v\u1ec1 vi\u1ec7c CT thu\u1ed9c v\u1ec1 \u0111\u00e2u, y\u00eau c\u1ea7u v\u1ec1 d\u00f2ng \u0111i\u1ec7n l\u00e0 bao nhi\u00eau, ho\u1eb7c li\u1ec7u gi\u1edbi h\u1ea1n h\u1ee3p \u0111\u1ed3ng \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng hay ch\u01b0a.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">S\u1eed d\u1ee5ng <a href=\"https:\/\/cnbygele.com\/vi\/blog\/active-harmonic-filter-ct-placement-wiring\/\">H\u01b0\u1edbng d\u1eabn \u0111\u1eb7t v\u1ecb tr\u00ed v\u00e0 \u0111\u1ea5u d\u00e2y CT<\/a> \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ranh gi\u1edbi \u0111o l\u01b0\u1eddng\/ki\u1ec3m so\u00e1t tr\u01b0\u1edbc khi xem m\u1ed9t k\u1ebft qu\u1ea3 l\u00e0 \u0111\u1ea1i di\u1ec7n. Khi ranh gi\u1edbi \u0111\u00f3 \u0111\u00e3 c\u1ed1 \u0111\u1ecbnh, <a href=\"https:\/\/cnbygele.com\/vi\/blog\/apf-sizing-calculation-measured-harmonic-current\/\">H\u01b0\u1edbng d\u1eabn t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc APF<\/a> chuy\u1ec3n \u0111\u1ed5i nhu c\u1ea7u \u0111o l\u01b0\u1eddng th\u00e0nh c\u00e1c \u0111\u1ea7u v\u00e0o c\u00f4ng su\u1ea5t, v\u00e0 <a href=\"https:\/\/cnbygele.com\/vi\/blog\/active-harmonic-filter-ahf-selection-guide\/\">H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn AHF<\/a> \u00e1p d\u1ee5ng c\u00e1c \u0111\u1ea7u v\u00e0o \u0111\u00f3 cho thi\u1ebft b\u1ecb v\u00e0 ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u00f4 h\u00ecnh v\u00f2ng \u0111i\u1ec1u khi\u1ec3n ch\u00ednh x\u00e1c kh\u00f4ng cung c\u1ea5p d\u1eef li\u1ec7u t\u1ea1i ch\u1ed7 c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb. C\u00e1c b\u1ea3n ghi \u0111\u1ea1i di\u1ec7n, s\u01a1 \u0111\u1ed3 m\u1ed9t d\u00f2ng, gi\u1edbi h\u1ea1n l\u1eafp \u0111\u1eb7t v\u00e0 \u0111i\u1ec3m ch\u1ea5p nh\u1eadn \u0111\u00e3 x\u00e1c \u0111\u1ecbnh ho\u00e0n ch\u1ec9nh quy\u1ebft \u0111\u1ecbnh ti\u1ebfp theo \u0111\u00f3.<\/p>\n<h2 id=\"how-the-cnbyg-ahf-apf-product-family-implements-the-chain\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">C\u00e1ch gia \u0111\u00ecnh s\u1ea3n ph\u1ea9m CNBYG AHF\/APF th\u1ef1c hi\u1ec7n chu\u1ed7i<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">D\u00f2ng s\u1ea3n ph\u1ea9m CNBYG AHF\/APF theo chu\u1ed7i ch\u1ee9c n\u0103ng gi\u1ed1ng nh\u01b0 \u0111\u00e3 m\u00f4 t\u1ea3 \u1edf tr\u00ean: c\u1ea3m bi\u1ebfn CT b\u00ean ngo\u00e0i, tr\u00edch xu\u1ea5t s\u1ed1 k\u1ef9 thu\u1eadt s\u1ed1 c\u00e1c th\u00e0nh ph\u1ea7n d\u00f2ng \u0111i\u1ec7n m\u1ee5c ti\u00eau, v\u00e0 t\u1ea1o ra c\u0169ng nh\u01b0 ti\u00eam d\u00f2ng b\u00f9 d\u1ef1a tr\u00ean IGBT.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">The <a href=\"https:\/\/cnbygele.com\/vi\/product\/ahf-active-harmonic-filter-harmonic-control\/\">D\u00f2ng s\u1ea3n ph\u1ea9m CNBYG AHF\/APF<\/a> \u0111\u01b0a ra c\u00e1c d\u1ea1ng treo t\u01b0\u1eddng v\u00e0 d\u1ea1ng \u0111\u1ec3 rack. Trong c\u00e1c d\u1ea1ng \u0111\u00f3, \u0111\u1ea7u v\u00e0o CT b\u00ean ngo\u00e0i cung c\u1ea5p x\u1eed l\u00fd k\u1ef9 thu\u1eadt s\u1ed1, \u0111i\u1ec1u khi\u1ec3n d\u00f2ng inverter \u0111\u01b0\u1ee3c ti\u00eam v\u00e0o bus.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Tr\u01b0\u1edbc khi so s\u00e1nh m\u1ed9t d\u00f2ng ho\u1eb7c x\u1ebfp h\u1ea1ng c\u1ee7a CNBYG, x\u00e1c \u0111\u1ecbnh ranh gi\u1edbi \u0111i\u1ec7n, h\u1ed3 s\u01a1 d\u00f2ng h\u00e0i h\u00f2a \u0111\u1ea1i di\u1ec7n, \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng v\u00e0 c\u1ea5u h\u00ecnh, tr\u1ea1ng th\u00e1i t\u1ea3i, thi\u1ebft b\u1ecb b\u00f9 hi\u1ec7n c\u00f3, \u0111i\u1ec1u ki\u1ec7n l\u1eafp \u0111\u1eb7t v\u00e0 m\u1ee5c ti\u00eau ch\u1ea5p nh\u1eadn.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">The <a href=\"https:\/\/cnbygele.com\/vi\/power-quality-system\/\">H\u1ec7 th\u1ed1ng ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec7n n\u0103ng<\/a> Trung t\u00e2m t\u1ed5 ch\u1ee9c \u0111o l\u01b0\u1eddng v\u00e0 ng\u1eef c\u1ea3nh h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u01b0\u1edbc khi ch\u1ecdn thi\u1ebft b\u1ecb. H\u01b0\u1edbng d\u1eabn v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 l\u1ef1a ch\u1ecdn CT cung c\u1ea5p chi ti\u1ebft \u1edf c\u1ea5p \u0111\u1ed9 ti\u1ebfp theo khi h\u1ed3 s\u01a1 \u0111\u00f3 \u0111\u00e3 ho\u00e0n t\u1ea5t.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" alt=\"B\u1ed9 l\u1ecdc h\u00e0i ho\u1ea1t \u0111\u1ed9ng treo t\u01b0\u1eddng CNBYG v\u00e0 c\u00e1c g\u00f3c nh\u00ecn k\u00edch th\u01b0\u1edbc\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/08\/ahf-working-injection.webp\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\"\/><\/figure>\n<h2 id=\"faqs\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3 style=\"margin:28px 0 12px\">B\u1ed9 l\u1ecdc h\u00e0i h\u00f2a ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o t\u1eebng b\u01b0\u1edbc m\u1ed9t?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">N\u00f3 \u0111o d\u00f2ng t\u1ea1i ranh gi\u1edbi x\u00e1c \u0111\u1ecbnh, x\u1eed l\u00fd t\u00edn hi\u1ec7u th\u00e0nh tham chi\u1ebfu d\u00f2ng b\u00f9, s\u1eed d\u1ee5ng b\u1ed9 bi\u1ebfn \u0111\u1ed5i \u0111i\u1ec1u khi\u1ec3n \u0111\u1ec3 t\u1ea1o ra d\u00f2ng l\u1ecdc, ti\u00eam d\u00f2ng \u0111\u00f3 song song, v\u00e0 c\u1eadp nh\u1eadt l\u1ec7nh khi t\u1ea3i thay \u0111\u1ed5i. V\u1edbi d\u00f2ng ngu\u1ed3n v\u00e0 d\u00f2ng l\u1ecdc \u0111\u00e3 x\u00e1c \u0111\u1ecbnh h\u01b0\u1edbng v\u1ec1 bus, ngu\u1ed3n cung c\u1ea5p d\u00f2ng t\u1ea3i tr\u1eeb \u0111i ph\u1ea7n \u0111\u00f3ng g\u00f3p c\u1ee7a b\u1ed9 l\u1ecdc.<\/p>\n<h3 style=\"margin:28px 0 12px\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa b\u1ed9 l\u1ecdc h\u00e0i h\u00f2a th\u1ee5 \u0111\u1ed9ng v\u00e0 ch\u1ee7 \u0111\u1ed9ng l\u00e0 g\u00ec?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">B\u1ed9 l\u1ecdc th\u1ee5 \u0111\u1ed9ng s\u1eed d\u1ee5ng c\u00e1c cu\u1ed9n c\u1ea3m, t\u1ee5 \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n tr\u1edf \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 t\u1ea1o h\u00ecnh tr\u1edf kh\u00e1ng m\u1ea1ng t\u1ea1i c\u00e1c t\u1ea7n s\u1ed1 \u0111\u00e3 ch\u1ecdn. B\u1ed9 l\u1ecdc ch\u1ee7 \u0111\u1ed9ng \u0111o tr\u1ea1ng th\u00e1i \u0111i\u1ec7n v\u00e0 \u0111i\u1ec1u khi\u1ec3n b\u1ed9 bi\u1ebfn \u0111\u1ed5i c\u00f4ng su\u1ea5t \u0111\u1ec3 t\u1ea1o ra d\u00f2ng b\u00f9 thay \u0111\u1ed5i.<\/p>\n<h3 style=\"margin:28px 0 12px\">T\u1ea1i sao d\u00f2ng b\u00f9 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u1eb1ng v\u00e0 ng\u01b0\u1ee3c chi\u1ec1u?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u1ee5m t\u1eeb n\u00e0y s\u1eed d\u1ee5ng m\u1ed9t h\u01b0\u1edbng tham chi\u1ebfu to\u00e0n c\u1ea7u chung, trong \u0111\u00f3 th\u00e0nh ph\u1ea7n b\u1ed9 l\u1ecdc v\u1eadt l\u00fd \u0111\u1ed1i l\u1eadp v\u1edbi th\u00e0nh ph\u1ea7n t\u1ea3i m\u1ee5c ti\u00eau. V\u1edbi c\u00e1c m\u0169i t\u00ean nh\u00e1nh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong b\u00e0i vi\u1ebft n\u00e0y, th\u00e0nh ph\u1ea7n b\u1ed9 l\u1ecdc l\u00e0 b\u1ea3n sao c\u00f9ng d\u1ea5u c\u1ee7a th\u00e0nh ph\u1ea7n t\u1ea3i m\u1ee5c ti\u00eau, v\u00e0 <code>i_source = i_load - i_filter<\/code> tr\u1eeb n\u00f3 kh\u1ecfi d\u00f2ng ngu\u1ed3n.<\/p>\n<h3 style=\"margin:28px 0 12px\">B\u1ed9 l\u1ecdc h\u00e0i h\u00f2a AHF c\u00f3 lo\u1ea1i b\u1ecf t\u1ea5t c\u1ea3 c\u00e1c h\u00e0i h\u00f2a kh\u00f4ng?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Kh\u00f4ng c\u00f3 k\u1ebft qu\u1ea3 ph\u1ed5 qu\u00e1t n\u00e0o ch\u1ec9 d\u1ef1a tr\u00ean nguy\u00ean l\u00fd. D\u00f2ng c\u00f2n l\u1ea1i ph\u1ee5 thu\u1ed9c v\u00e0o ranh gi\u1edbi \u0111o l\u01b0\u1eddng, c\u00e1c th\u00e0nh ph\u1ea7n m\u1ee5c ti\u00eau, kh\u1ea3 n\u0103ng d\u00f2ng \u0111i\u1ec7n c\u00f3 s\u1eb5n, ph\u1ea3n h\u1ed3i c\u1ee7a b\u1ed9 \u0111i\u1ec1u khi\u1ec3n v\u00e0 b\u1ed9 bi\u1ebfn \u0111\u1ed5i, tr\u1ea1ng th\u00e1i t\u1ea3i, v\u00e0 t\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng.<\/p>\n<h3 style=\"margin:28px 0 12px\">B\u1ed9 l\u1ecdc h\u00e0i h\u00f2a ch\u1ee7 \u0111\u1ed9ng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i \u1edf \u0111\u00e2u?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">B\u1ed9 l\u1ecdc AHF song song ph\u1ed5 bi\u1ebfn k\u1ebft n\u1ed1i song song v\u1edbi t\u1ea3i ho\u1eb7c bus \u0111\u1ec3 c\u00f3 th\u1ec3 ti\u00eam d\u00f2ng. \u0110i\u1ec3m k\u1ebft n\u1ed1i ch\u00ednh x\u00e1c v\u00e0 v\u1ecb tr\u00ed CT ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi ranh gi\u1edbi b\u00f9 d\u1ef1 \u0111\u1ecbnh v\u00e0 thi\u1ebft k\u1ebf d\u1ef1 \u00e1n \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t.<\/p>\n<h3 style=\"margin:28px 0 12px\">C\u00f3 bao nhi\u00eau lo\u1ea1i b\u1ed9 l\u1ecdc ch\u1ee7 \u0111\u1ed9ng?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u1ed9t ph\u00e2n lo\u1ea1i c\u1ea5p cao ph\u1ed5 bi\u1ebfn l\u00e0 song song, n\u1ed1i ti\u1ebfp, lai v\u00e0 b\u1ed9 \u0111i\u1ec1u h\u00f2a ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec7n n\u0103ng h\u1ee3p nh\u1ea5t. B\u1ed9 l\u1ecdc song song ch\u1ee7 y\u1ebfu ti\u00eam d\u00f2ng song song; b\u1ed9 l\u1ecdc n\u1ed1i ti\u1ebfp ti\u00eam \u0111i\u1ec7n \u00e1p; c\u00e1c c\u1ea5u h\u00ecnh lai k\u1ebft h\u1ee3p ch\u1ee9c n\u0103ng ch\u1ee7 \u0111\u1ed9ng v\u00e0 th\u1ee5 \u0111\u1ed9ng; v\u00e0 UPQC ph\u1ed1i h\u1ee3p ch\u1ee9c n\u0103ng n\u1ed1i ti\u1ebfp v\u00e0 song song.<\/p>\n<h3 style=\"margin:28px 0 12px\">M\u1ed9t b\u1ed9 l\u1ecdc c\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng (AHF) c\u0169ng c\u00f3 th\u1ec3 ch\u1ec9nh s\u1eeda h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t kh\u00f4ng?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u1ed9t s\u1ed1 s\u1ea3n ph\u1ea9m b\u1ed9 l\u1ecdc ho\u1ea1t \u0111\u1ed9ng c\u00f3 th\u1ec3 bao g\u1ed3m b\u00f9 d\u00f2ng ph\u1ea3n \u1ee9ng ho\u1eb7c ch\u1ec9nh s\u1eeda h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t nh\u01b0 m\u1ed9t ch\u1ee9c n\u0103ng c\u1ea5u h\u00ecnh. Vi\u1ec7c ch\u1ee9c n\u0103ng \u0111\u00f3 c\u00f3 s\u1eb5n v\u00e0 c\u00e1ch chia s\u1ebb c\u00f4ng su\u1ea5t ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn cho s\u1ea3n ph\u1ea9m v\u00e0 \u1ee9ng d\u1ee5ng \u0111\u00e3 ch\u1ecdn.<\/p>\n<h3 style=\"margin:28px 0 12px\">C\u00e1ch x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ee7a AHF l\u00e0 g\u00ec v\u00e0 chi ph\u00ed bao nhi\u00eau?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Vi\u1ec7c x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc b\u1eaft \u0111\u1ea7u v\u1edbi nhu c\u1ea7u d\u00f2ng h\u00e0i h\u00f2a \u0111o l\u01b0\u1eddng \u0111\u1ea1i di\u1ec7n t\u1ea1i ranh gi\u1edbi d\u1ef1 \u0111\u1ecbnh, sau \u0111\u00f3 xem x\u00e9t \u0111i\u1ec7n \u00e1p, tr\u1ea1ng th\u00e1i t\u1ea3i, s\u01a1 \u0111\u1ed3 k\u1ebft n\u1ed1i, l\u1eafp \u0111\u1eb7t, \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t v\u00e0 m\u1ee5c ti\u00eau ch\u1ea5p nh\u1eadn. Chi ph\u00ed ph\u1ee5 thu\u1ed9c v\u00e0o c\u00f4ng su\u1ea5t thi\u1ebft b\u1ecb y\u00eau c\u1ea7u v\u00e0 t\u00edch h\u1ee3p d\u1ef1 \u00e1n h\u01a1n l\u00e0 s\u01a1 \u0111\u1ed3 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng; s\u1eed d\u1ee5ng h\u01b0\u1edbng d\u1eabn k\u00edch th\u01b0\u1edbc v\u00e0 l\u1ef1a ch\u1ecdn li\u00ean k\u1ebft \u0111\u1ec3 quy\u1ebft \u0111\u1ecbnh.<\/p>\n<h2 id=\"references\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Active_power_filter\" rel=\"nofollow noopener\" target=\"_blank\">Wikipedia \u2014 B\u1ed9 l\u1ecdc c\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.reddit.com\/r\/ElectricalEngineering\/comments\/768ji4\/difference_between_capacitor_banks_svc_and_facts\/\" rel=\"nofollow noopener\" target=\"_blank\">Reddit r\/ElectricalEngineering \u2014 S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ng\u00e2n h\u00e0ng t\u1ee5, SVC v\u00e0 h\u1ec7 th\u1ed1ng HV FACTS?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.reddit.com\/r\/ElectricalEngineering\/comments\/7rm79z\/power_quality_harmonics\/\" rel=\"nofollow noopener\" target=\"_blank\">Reddit r\/ElectricalEngineering \u2014 H\u00e0i h\u00f2a ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec7n<\/a><\/li>\n<\/ul>\n<\/div>\n<p>\u0110\u1ec3 ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng t\u1eadp trung, \u0111\u1ecdc <a href=\"https:\/\/cnbygele.com\/vi\/blog\/active-harmonic-filter-not-reducing-thd\/\">t\u1ea1i sao b\u1ed9 l\u1ecdc h\u00e0i ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng gi\u1ea3m THD<\/a>; <a href=\"https:\/\/cnbygele.com\/vi\/blog\/active-harmonic-filter-alarm-troubleshooting\/\">x\u1eed l\u00fd s\u1ef1 c\u1ed1 c\u1ea3nh b\u00e1o b\u1ed9 l\u1ecdc h\u00e0i ho\u1ea1t \u0111\u1ed9ng<\/a>; <a href=\"https:\/\/cnbygele.com\/vi\/blog\/open-loop-vs-closed-loop-ahf\/\">\u0110i\u1ec1u khi\u1ec3n b\u1ed9 l\u1ecdc m\u1edf v\u00f2ng v\u00e0 v\u00f2ng k\u00edn<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u c\u00e1ch b\u1ed9 l\u1ecdc harmonic ch\u1ee7 \u0111\u1ed9ng c\u1ea3m bi\u1ebfn d\u00f2ng t\u1ea3i, t\u00ednh to\u00e1n tham chi\u1ebfu v\u00e0 b\u01a1m d\u00f2ng b\u00f9 \u0111\u1ec3 gi\u1ea3m h\u00e0m l\u01b0\u1ee3ng harmonic t\u1ea1i ngu\u1ed3n.<\/p>","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2424","post","type-post","status-publish","format-standard","hentry","category-blog"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"acf":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/posts\/2424","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/comments?post=2424"}],"version-history":[{"count":4,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/posts\/2424\/revisions"}],"predecessor-version":[{"id":3337,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/posts\/2424\/revisions\/3337"}],"wp:attachment":[{"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/media?parent=2424"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/categories?post=2424"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/tags?post=2424"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}