{"id":2403,"date":"2026-08-19T08:00:00","date_gmt":"2026-08-19T00:00:00","guid":{"rendered":"https:\/\/cnbygele.com\/?p=2403"},"modified":"2026-08-24T17:23:21","modified_gmt":"2026-08-24T09:23:21","slug":"active-vs-reactive-power","status":"publish","type":"post","link":"https:\/\/cnbygele.com\/vi\/blog\/active-vs-reactive-power\/","title":{"rendered":"C\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng trong h\u1ec7 th\u1ed1ng AC c\u1ee7a nh\u00e0 m\u00e1y: P, Q v\u00e0 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t"},"content":{"rendered":"<div class=\"b2b-article\">\n<p style=\"margin:0 0 16px;line-height:1.7\">A <strong>C\u00f4ng su\u1ea5t t\u00e1c d\u1ee5ng v\u00e0 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng<\/strong> So s\u00e1nh l\u00e0 l\u01b0\u1ee3ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng watt so v\u1edbi l\u01b0\u1ee3ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng var, trong \u0111\u00f3 c\u00f3 ch\u1ee9a c\u00e1c tr\u01b0\u1eddng \u0111i\u1ec7n ho\u1eb7c t\u1eeb. C\u00f4ng su\u1ea5t th\u1ef1c t\u1ebf l\u00e0 t\u1ed5ng c\u1ee7a hai con s\u1ed1 n\u00e0y, \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng volt-amperes. Trang n\u00e0y s\u1ebd \u0111\u1ecdc ba c\u1ed9t theo c\u00e1ch m\u00e0 \u0111\u1ed3ng h\u1ed3 \u0111o \u0111i\u1ec7n c\u1ee7a nh\u00e0 m\u00e1y hi\u1ec3n th\u1ecb, sau \u0111\u00f3 t\u00e1ch bi\u1ec7t vi\u1ec7c b\u00f9 tr\u1eeb v\u00e0 l\u1ecdc h\u00e0i.<\/p>\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-active-power-does-on-a-plant-meter\">Active Power ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o tr\u00ean \u0111\u1ed3ng h\u1ed3 \u0111o \u0111i\u1ec7n c\u1ee7a nh\u00e0 m\u00e1y?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#what-reactive-power-does-and-why-conductors-still-carry-it\">C\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao c\u00e1c d\u00e2y d\u1eabn v\u1eabn ph\u1ea3i s\u1eed d\u1ee5ng n\u00f3<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#apparent-power-the-power-triangle-and-power-factor\">C\u00f4ng su\u1ea5t bi\u1ec3u ki\u1ebfn, Tam gi\u00e1c c\u00f4ng su\u1ea5t v\u00e0 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#ac-versus-dc-and-mix-ups-with-active-versus-passive\">AC so v\u1edbi DC v\u00e0 s\u1ef1 l\u1eabn l\u1ed9n gi\u1eefa ho\u1ea1t \u0111\u1ed9ng v\u00e0 th\u1ee5 \u0111\u1ed9ng<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#compensation-is-not-the-same-decision-as-harmonic-filtering\">Ph\u00e2n b\u1ed5 ti\u1ec1n b\u1ed3i th\u01b0\u1eddng kh\u00f4ng ph\u1ea3i l\u00e0 quy\u1ebft \u0111\u1ecbnh gi\u1ed1ng nh\u01b0 vi\u1ec7c l\u1ecdc \u00e2m thanh<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#when-capacitor-banks-fit-and-when-an-svg-fits-better\">Khi c\u00e1c c\u1ee5m t\u1ee5 \u0111i\u1ec7n ph\u00f9 h\u1ee3p v\u00e0 khi SVG ph\u00f9 h\u1ee3p h\u01a1n<\/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 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"what-active-power-does-on-a-plant-meter\">Active Power ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o tr\u00ean \u0111\u1ed3ng h\u1ed3 \u0111o \u0111i\u1ec7n c\u1ee7a nh\u00e0 m\u00e1y?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng l\u00e0 n\u0103ng l\u01b0\u1ee3ng trung b\u00ecnh th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c chuy\u1ec3n t\u1eeb ngu\u1ed3n cung c\u1ea5p sang t\u1ea3i trong m\u1ed7i chu k\u1ef3 AC. \u0110\u1ed3ng h\u1ed3 \u0111o b\u00e1o c\u00e1o th\u00f4ng s\u1ed1 n\u00e0y d\u01b0\u1edbi d\u1ea1ng watt ho\u1eb7c kilowatt.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u00e1y s\u01b0\u1edfi, \u0111\u00e8n chi\u1ebfu s\u00e1ng c\u00f3 t\u00ednh ch\u1ea5t \u0111i\u1ec7n tr\u1edf v\u00e0 c\u00f4ng su\u1ea5t \u0111\u1ed9ng c\u01a1 \u0111\u1ec1u ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ed9t n\u00e0y. \u0110i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n v\u1eabn duy tr\u00ec \u1ed5n \u0111\u1ecbnh khi t\u1ea3i ch\u1ec9 c\u00f3 t\u00ednh ch\u1ea5t \u0111i\u1ec7n tr\u1edf, do \u0111\u00f3 c\u00f4ng su\u1ea5t kh\u00f4ng thay \u0111\u1ed5i ngay l\u1eadp t\u1ee9c.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Trong h\u00f3a \u0111\u01a1n, h\u00e3y coi k\u00eanh kW l\u00e0 \u201ct\u00ednh n\u0103ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong quy tr\u00ecnh\u201d. C\u00e1c kho\u1ea3n ph\u00ed n\u0103ng l\u01b0\u1ee3ng th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u00f3, ngay c\u1ea3 khi sau n\u00e0y nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111i\u1ec7n b\u1ed5 sung th\u00eam t\u00ednh n\u0103ng ph\u1ea3n kh\u00e1ng ho\u1eb7c t\u00ednh n\u0103ng \u0111\u00e1p \u1ee9ng nhu c\u1ea7u. C\u1ed9t kW n\u00e0y l\u00e0 c\u00e2u chuy\u1ec7n v\u1ec1 c\u00f4ng vi\u1ec7c, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e2u chuy\u1ec7n v\u1ec1 l\u0129nh v\u1ef1c.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\"><strong>C\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng vs c\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng<\/strong> Hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng tr\u00ean \u1ea3nh ch\u1ee5p m\u00e0n h\u00ecnh: m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng t\u0103ng l\u00ean khi d\u00e2y chuy\u1ec1n \u0111ang s\u1ea3n xu\u1ea5t s\u1ea3n ph\u1ea9m, s\u1ed1 c\u00f2n l\u1ea1i c\u00f3 th\u1ec3 duy tr\u00ec \u1edf m\u1ee9c cao khi \u0111\u1ed9ng c\u01a1 ch\u1ec9 \u0111\u01a1n gi\u1ea3n \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/08\/active-vs-reactive-featured.webp\" alt=\"M\u00e1y \u0111o t\u1ea3i cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed t\u00edch c\u1ef1c, ti\u00eau c\u1ef1c v\u00e0 bi\u1ec3u ki\u1ebfn\"><\/figure>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"what-reactive-power-does-and-why-conductors-still-carry-it\">C\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao c\u00e1c d\u00e2y d\u1eabn v\u1eabn ph\u1ea3i s\u1eed d\u1ee5ng n\u00f3<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng l\u00e0 n\u0103ng l\u01b0\u1ee3ng dao \u0111\u1ed9ng \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong c\u00e1c t\u1eeb tr\u01b0\u1eddng c\u1ee7a t\u1ee5 \u0111i\u1ec7n v\u00e0 \u0111\u1ed9ng c\u01a1, ho\u1eb7c trong c\u00e1c t\u1eeb tr\u01b0\u1eddng \u0111i\u1ec7n c\u1ee7a t\u1ee5 \u0111i\u1ec7n. N\u00f3 kh\u00f4ng t\u1ea1o ra c\u00f4ng su\u1ea5t r\u00f2ng cho t\u1ea3i trong m\u1ed9t chu k\u1ef3 \u0111\u1ea7y \u0111\u1ee7, v\u00e0 \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng \u0111\u01a1n v\u1ecb var ho\u1eb7c kvar.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">N\u1ebfu t\u1ea3i ch\u1ec9 l\u00e0 d\u00f2ng \u0111i\u1ec7n ph\u1ea3n kh\u00e1ng, \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n s\u1ebd c\u00e1ch nhau 90 \u0111\u1ed9. N\u0103ng l\u01b0\u1ee3ng s\u1ebd \u0111i v\u00e0o h\u1ec7 th\u1ed1ng trong m\u1ed9t chu k\u1ef3 m\u1ed9t ph\u1ea7n t\u01b0 v\u00e0 s\u1ebd tr\u1edf l\u1ea1i trong m\u1ed9t chu k\u1ef3 ti\u1ebfp theo.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00e1c cu\u1ed9n d\u00e2y c\u00e1p, bus v\u00e0 bi\u1ebfn \u00e1p v\u1eabn ti\u1ebfp t\u1ee5c truy\u1ec1n t\u1ea3i d\u00f2ng \u0111i\u1ec7n cho qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i \u0111\u00f3. Kh\u00e1ng \u0111i\u1ec7n c\u1ee7a d\u00e2y d\u1eabn l\u1ea1i bi\u1ebfn ph\u1ea7n n\u00e0y th\u00e0nh nhi\u1ec7t ngay c\u1ea3 khi t\u1ea3i l\u00fd t\u01b0\u1edfng kh\u00f4ng ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng n\u00e0o.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00e1c thi\u1ebft b\u1ecb c\u1ea5p ngu\u1ed3n n\u00f3ng v\u1edbi k\u00eanh c\u00f4ng su\u1ea5t y\u00ean t\u0129nh l\u00e0 ph\u1ed5 bi\u1ebfn. S\u1ef1 h\u1ed7 tr\u1ee3 ph\u1ea3n kh\u00e1ng y\u1ebfu c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111i\u1ec7n \u00e1p tr\u00ean m\u1ed9t tr\u1ea1m \u0111i\u1ec7n \u0111\u1ecba ph\u01b0\u01a1ng, \u0111\u00e2y c\u0169ng l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 c\u1ee7a l\u01b0\u1edbi \u0111i\u1ec7n c\u0169ng nh\u01b0 c\u1ee7a nh\u00e0 m\u00e1y.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"apparent-power-the-power-triangle-and-power-factor\">C\u00f4ng su\u1ea5t bi\u1ec3u ki\u1ebfn, Tam gi\u00e1c c\u00f4ng su\u1ea5t v\u00e0 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u1ed9 c\u00f4ng su\u1ea5t th\u1ef1c t\u1ebf l\u00e0 s\u1ea3n ph\u1ea9m c\u1ee7a \u0111i\u1ec7n \u00e1p RMS v\u00e0 d\u00f2ng \u0111i\u1ec7n RMS. C\u00e1c k\u1ef9 s\u01b0 bi\u1ec3u di\u1ec5n n\u00f3 nh\u01b0 l\u00e0 \u0111\u01b0\u1eddng ch\u00e9o c\u1ee7a m\u1ed9t tam gi\u00e1c, trong \u0111\u00f3 c\u00e1c c\u1ea1nh l\u00e0 c\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00f4ng su\u1ea5t th\u1ee5 \u0111\u1ed9ng.<\/p>\n<div class=\"b2b-table-scroll\" role=\"region\" aria-label=\"B\u1ea3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 cu\u1ed9n\" tabindex=\"0\" style=\"width:100%;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 18px\">\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<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Bi\u1ec3u t\u01b0\u1ee3ng th\u00f4ng th\u01b0\u1eddng<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">\u0110\u01a1n v\u1ecb<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Ng\u01b0\u1eddi \u0111\u1ecdc v\u1ec1 c\u00e2y tr\u1ed3ng n\u00ean r\u00fat ra \u0111\u01b0\u1ee3c \u0111i\u1ec1u g\u00ec t\u1eeb \u0111\u00f3?<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng (th\u1ef1c t\u1ebf, \u0111\u00fang s\u1ef1 th\u1eadt)<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">P<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">W, kW<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">M\u1ea1ng l\u01b0\u1edbi<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Q<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">var, kvar<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Trao \u0111\u1ed5i th\u1ef1c \u0111\u1ecba<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">S\u1ee9c m\u1ea1nh r\u00f5 r\u00e0ng<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">S<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">VA, kVA<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Thi\u1ebft b\u1ecb cung c\u1ea5p ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng v\u1eadn chuy\u1ec3n nh\u1eefng g\u00ec<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u1ed9 c\u00f4ng su\u1ea5t l\u00e0 c\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng chia cho c\u00f4ng su\u1ea5t bi\u1ec3u ki\u1ebfn. Khi tam gi\u00e1c h\u00ecnh ch\u1eef nh\u1eadt m\u1ecfng, ph\u1ea7n l\u1edbn c\u00f4ng su\u1ea5t kVA l\u00e0 c\u00f4ng su\u1ea5t h\u1eefu \u00edch. Khi Q t\u0103ng l\u00ean, l\u01b0\u1ee3ng kilowatt t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ea7n nhi\u1ec1u d\u00f2ng \u0111i\u1ec7n h\u01a1n.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">IEC \u0111\u00e3 ch\u1ea5p nh\u1eadn var l\u00e0m \u0111\u01a1n v\u1ecb c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng v\u00e0o n\u0103m 1930 \u0111\u1ec3 c\u1ed9t n\u00e0y kh\u00f4ng \u0111\u01b0\u1ee3c vi\u1ebft l\u00e0 watt. C\u00e1c m\u00e1y bi\u1ebfn \u00e1p, m\u00e1y ph\u00e1t \u0111i\u1ec7n v\u00e0 nhi\u1ec1u thi\u1ebft b\u1ecb UPS v\u1eabn \u0111\u01b0\u1ee3c ghi t\u00ean theo \u0111\u01a1n v\u1ecb kVA v\u00ec l\u00fd do t\u01b0\u01a1ng t\u1ef1: nhi\u1ec7t l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c truy\u1ec1n theo d\u00f2ng \u0111i\u1ec7n, kh\u00f4ng ch\u1ec9 l\u00e0 kilowatt.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u1ed9t t\u1eadp h\u1ee3p c\u00f4ng th\u1ee9c ng\u1eafn l\u00e0 \u0111\u1ee7 cho trang n\u00e0y: c\u00f4ng su\u1ea5t bi\u1ec3u ki\u1ebfn l\u00e0 t\u1ed5ng c\u1ee7a P v\u00e0 Q; h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t l\u00e0 P chia cho S. \u0110\u1ed9 m\u00e9o tr\u00ean b\u1ed9 ngu\u1ed3n VFD l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 \u0111o l\u01b0\u1eddng ri\u00eang bi\u1ec7t.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">N\u1ebfu b\u1ea1n ch\u1ea1y m\u1ed9t m\u00e1y n\u1ea1p c\u00f3 m\u1ed9t m\u00e1y s\u01b0\u1edfi c\u00f4ng su\u1ea5t l\u1edbn v\u00e0 m\u1ed9t \u0111\u1ed9ng c\u01a1 l\u1edbn, th\u00ec h\u00ecnh tam gi\u00e1c s\u1ebd tr\u1edf n\u00ean r\u00f5 r\u00e0ng. M\u00e1y s\u01b0\u1edfi s\u1ebd l\u00e0m t\u0103ng c\u00f4ng su\u1ea5t c\u1ee7a \u0111\u1ed9ng c\u01a1. \u0110\u1ed9ng c\u01a1 c\u0169ng c\u1ea7n th\u00eam m\u1ed9t m\u00e1y bi\u1ebfn \u00e1p ngay c\u1ea3 khi t\u1ea3i \u1edf tr\u1ee5c quay th\u1ea5p, v\u00ec v\u1eady kVA s\u1ebd t\u0103ng nhanh h\u01a1n d\u1ef1 ki\u1ebfn c\u1ee7a \u0111\u1ed9i ng\u0169 s\u1ea3n xu\u1ea5t.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/08\/active-vs-reactive-loads.webp\" alt=\"S\u01b0\u1edfi \u1ea5m b\u1eb1ng qu\u00e1 tr\u00ecnh \u0111i\u1ec7n tr\u1edf b\u00ean c\u1ea1nh \u0111\u1ed9ng c\u01a1 c\u1ea3m \u1ee9ng\"><\/figure>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"ac-versus-dc-and-mix-ups-with-active-versus-passive\">AC so v\u1edbi DC v\u00e0 s\u1ef1 l\u1eabn l\u1ed9n gi\u1eefa ho\u1ea1t \u0111\u1ed9ng v\u00e0 th\u1ee5 \u0111\u1ed9ng<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">N\u0103ng l\u01b0\u1ee3ng ph\u1ea3n \u1ee9ng theo ngh\u0129a n\u00e0y l\u00e0 m\u1ed9t d\u1ea1ng d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u. D\u00f2ng \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp kh\u00f4ng c\u00f3 s\u1ef1 thay \u0111\u1ed5i pha l\u1eb7p \u0111i l\u1eb7p l\u1ea1i gi\u1eefa \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n nh\u01b0 ki\u1ec3u m\u00e0 n\u00f3 l\u01b0u tr\u1eef v\u00e0 t\u00e1i t\u1ea1o n\u0103ng l\u01b0\u1ee3ng trong m\u1ed7i chu k\u1ef3 c\u1ee7a L v\u00e0 C.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Ng\u01b0\u1eddi ta v\u1eabn t\u00ecm ki\u1ebfm t\u1eeb kh\u00f3a \u201cch\u1ee9c n\u0103ng \u0111i\u1ec7n t\u00edch \u0111\u1ed9ng v\u00e0 \u0111i\u1ec7n t\u00edch t\u0129nh\u201d sau c\u00f9ng m\u1ed9t \u00f4 t\u00ecm ki\u1ebfm c\u1ee7a Google. C\u1eb7p t\u1eeb kh\u00f3a n\u00e0y th\u01b0\u1eddng \u00e1m ch\u1ec9 \u0111\u1ebfn c\u00e1c m\u1ea1ch \u0111i\u1ec7n t\u00edch \u0111\u1ed9ng v\u00e0 t\u0129nh, ho\u1eb7c ph\u1ea7n c\u1ee9ng \u0111i\u1ec1u ch\u1ec9nh h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t \u0111i\u1ec7n t\u00edch \u0111\u1ed9ng v\u00e0 t\u0129nh, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 P v\u00e0 Q.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">N\u1ebfu trong bi\u1ec3u d\u1eef li\u1ec7u c\u00f3 ghi \u201cActive PFC\u201d, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 k\u00eanh kilowatt tr\u00ean \u0111\u1ed3ng h\u1ed3 \u0111o \u0111i\u1ec7n c\u1ee7a nh\u00e0 m\u00e1y b\u1ea1n. H\u00e3y t\u00e1ch bi\u1ec7t hai thu\u1eadt ng\u1eef n\u00e0y \u0111\u1ec3 tr\u00e1nh vi\u1ec7c m\u1ed9t d\u00f2ng th\u00f4ng tin c\u00f3 th\u1ec3 \u0111i l\u1ea1c kh\u1ecfi ch\u1ee7 \u0111\u1ec1 ch\u00ednh.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Anh qu\u1ed1c v\u00e0 nhi\u1ec1u gi\u00e1o tr\u00ecnh \u0111\u1ec1u th\u00edch d\u00f9ng t\u1eeb \u201cn\u0103ng l\u01b0\u1ee3ng t\u00edch c\u1ef1c\u201d, trong khi c\u00e1c ghi ch\u00fa c\u1ee7a M\u1ef9 l\u1ea1i d\u00f9ng t\u1eeb \u201cth\u1ef1c t\u1ebf\u201d ho\u1eb7c \u201cth\u1eadt s\u1ef1\u201d. Ch\u00fang \u0111\u1ec1u thu\u1ed9c c\u1ed9t P.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u1ed9t thi\u1ebft b\u1ecb \u0111o c\u00f4ng su\u1ea5t t\u1ea1i M\u1ef9 c\u00f3 ch\u1ee9c n\u0103ng ghi l\u1ea1i c\u00f4ng su\u1ea5t kW v\u1eabn hi\u1ec3n th\u1ecb k\u00eanh c\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng \u0111\u00f3.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/08\/active-vs-reactive-conductors.webp\" alt=\"C\u00e1c thi\u1ebft b\u1ecb buswork ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng truy\u1ec1n t\u1ea3i t\u1ed5ng d\u00f2ng \u0111i\u1ec7n, kh\u00f4ng ch\u1ec9 l\u00e0 d\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng.\"><\/figure>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"compensation-is-not-the-same-decision-as-harmonic-filtering\">Ph\u00e2n b\u1ed5 ti\u1ec1n b\u1ed3i th\u01b0\u1eddng kh\u00f4ng ph\u1ea3i l\u00e0 quy\u1ebft \u0111\u1ecbnh gi\u1ed1ng nh\u01b0 vi\u1ec7c l\u1ecdc \u00e2m thanh<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Vi\u1ec7c b\u00f9 \u0111\u1eafp ph\u1ea3n \u1ee9ng l\u00e0m thay \u0111\u1ed5i Q. Vi\u1ec7c l\u1ecdc h\u00e0i h\u00f2a l\u00e0m bi\u1ebfn \u0111\u1ed5i d\u00f2ng \u0111i\u1ec7n b\u1ecb nhi\u1ec5u. Vi\u1ec7c k\u1ebft h\u1ee3p hai c\u00f4ng vi\u1ec7c n\u00e0y l\u00e0 m\u1ed9t sai l\u1ea7m th\u01b0\u1eddng th\u1ea5y tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ed9ng c\u01a1 h\u1ed7n h\u1ee3p.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u1ed9 cos \u03c6 c\u1ee7a c\u00f4ng su\u1ea5t chuy\u1ec3n \u0111\u1ed9ng tr\u00ean m\u1ed9t \u0111\u1ed9ng c\u01a1 c\u1ea3m \u1ee9ng kh\u1edfi \u0111\u1ed9ng b\u1eb1ng d\u00e2y \u0111i\u1ec7n ch\u1ee7 y\u1ebfu l\u00e0 do bi\u1ebfn tr\u1edf t\u1eeb. C\u00e1c t\u1ee5 \u0111i\u1ec7n c\u00f3 c\u00f4ng su\u1ea5t \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng \u0111i\u1ec7n \u0111\u00e3 l\u00e0 gi\u1ea3i ph\u00e1p th\u00f4ng th\u01b0\u1eddng \u0111\u1ed1i v\u1edbi d\u1ea1ng Q ch\u1eadm n\u00e0y.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Nhi\u1ec1u \u0111\u1ed9ng c\u01a1 bi\u1ebfn t\u1ea7n t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n v\u1edbi \u0111\u1ed9 bi\u1ebfn d\u1ea1ng l\u1edbn. C\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 tr\u00ean b\u1ed9 ngu\u1ed3n n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng c\u1ed9ng h\u01b0\u1edfng thay v\u00ec \u201cgi\u1eef \u1ed5n \u0111\u1ecbnh PF\u201d.\u201d<\/p>\n<blockquote>\n<p style=\"margin:0 0 16px;line-height:1.7\"><strong>T\u1eeb l\u0129nh v\u1ef1c:<\/strong> C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t m\u00e1y bi\u1ebfn t\u1ea7n v\u1eabn \u0111ang \u0111\u1eb7t c\u00e2u h\u1ecfi li\u1ec7u vi\u1ec7c k\u1ebft h\u1ee3p c\u00e1c \u0111\u1ed9ng c\u01a1 c\u00f3 h\u01b0\u1edbng d\u1eabn chuy\u1ec3n \u0111\u1ed5i (over-the-line motors) v\u00e0 \u0111\u1ed9ng c\u01a1 bi\u1ebfn t\u1ea7n (VFD motors) c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u1ee5 \u0111i\u1ec7n thay v\u00ec b\u1ed9 l\u1ecdc kh\u00f4ng. <a href=\"https:\/\/www.eng-tips.com\/threads\/power-factor-correction-and-harmonic-resonance.488700\/\" rel=\"nofollow noopener\" target=\"_blank\">Th\u1ea3o lu\u1eadn tr\u00ean Eng-Tips<\/a> \u00d4ng n\u00f3i th\u1eb3ng ra: \u0111\u1ed9ng c\u01a1 c\u1ea3m \u1ee9ng l\u00e0 v\u1ea5n \u0111\u1ec1 v\u1ec1 c\u00f4ng su\u1ea5t v\u00e0 chuy\u1ec3n \u0111\u1ed9ng; nhi\u1ec1u \u0111\u1ed9ng c\u01a1 l\u1ea1i l\u00e0 v\u1ea5n \u0111\u1ec1 v\u1ec1 bi\u1ebfn d\u1ea1ng v\u00e0 c\u00f4ng su\u1ea5t.<\/p>\n<\/blockquote>\n<p style=\"margin:0 0 16px;line-height:1.7\">N\u1ebfu c\u00e2u h\u1ecfi v\u1ec1 vi\u1ec7c khai th\u00e1c g\u1ed7 l\u00e0 s\u1ef1 thay \u0111\u1ed5i v\u1ecb tr\u00ed so v\u1edbi s\u1ef1 bi\u1ebfn d\u1ea1ng, h\u00e3y s\u1eed d\u1ee5ng c\u00e1c th\u00f4ng tin hi\u1ec7n c\u00f3. <a href=\"https:\/\/cnbygele.com\/vi\/blog\/displacement-vs-distortion-power-factor-logging\/\">\u0110\u1ed9 l\u1ec7ch pha so v\u1edbi h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t bi\u1ebfn d\u1ea1ng<\/a> Xin l\u01b0u \u00fd r\u1eb1ng kh\u00f4ng n\u00ean nh\u1eafc l\u1ea1i c\u00e2u h\u1ecfi n\u00e0y \u1edf \u0111\u00e2y. N\u1ebfu c\u00e2u h\u1ecfi l\u00e0 c\u00e1ch ph\u00e2n lo\u1ea1i thi\u1ebft b\u1ecb b\u1ed3i th\u01b0\u1eddng, h\u00e3y s\u1eed d\u1ee5ng <a href=\"https:\/\/cnbygele.com\/vi\/blog\/what-is-reactive-power-compensation-key-concepts-explained\/\">ngh\u0129a c\u1ee7a vi\u1ec7c b\u00f9 \u0111\u1eafp c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng l\u00e0 g\u00ec<\/a>.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/08\/active-vs-reactive-compensation.webp\" alt=\"Hai t\u1ee7 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed thay th\u1ebf cho c\u00e1c t\u1ee5 \u0111i\u1ec7n chuy\u1ec3n m\u1ea1ch so v\u1edbi \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n t\u1eed Q\"><\/figure>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"when-capacitor-banks-fit-and-when-an-svg-fits-better\">Khi c\u00e1c c\u1ee5m t\u1ee5 \u0111i\u1ec7n ph\u00f9 h\u1ee3p v\u00e0 khi SVG ph\u00f9 h\u1ee3p h\u01a1n<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00e1c c\u1ee5m t\u1ee5 \u0111i\u1ec7n b\u01a1m m\u1ed9t kh\u1ed1i l\u01b0\u1ee3ng \u0111i\u1ec7n d\u1eabn t\u01b0\u01a1ng \u0111\u1ed1i c\u1ed1 \u0111\u1ecbnh. Ch\u00fang ho\u1ea1t \u0111\u1ed9ng t\u1ed1t khi \u0111\u1ed9 tr\u1ec5 c\u1ee7a Q l\u1edbn, \u1ed5n \u0111\u1ecbnh kh\u00e1 v\u00e0 m\u00f4i tr\u01b0\u1eddng h\u00e0i h\u00f2a \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u00e1y ph\u00e1t \u0111i\u1ec7n t\u0129nh l\u00e0 ngu\u1ed3n \u0111i\u1ec7n t\u1eed c\u00f3 th\u1ec3 cung c\u1ea5p ho\u1eb7c h\u1ea5p th\u1ee5 Q khi bus di chuy\u1ec3n. \u0110\u00f3 l\u00e0 tr\u01b0\u1eddng h\u1ee3p khi m\u00e1y h\u00e0n, c\u1ea7n c\u1ea9u ho\u1eb7c d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t ph\u1ea3i \u0111\u00e1p \u1ee9ng nhu c\u1ea7u ph\u1ea3n kh\u00e1ng nhanh h\u01a1n ng\u00e2n h\u00e0ng contactor c\u00f3 th\u1ec3 theo d\u00f5i.<\/p>\n<div class=\"b2b-table-scroll\" role=\"region\" aria-label=\"B\u1ea3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 cu\u1ed9n\" tabindex=\"0\" style=\"width:100%;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 18px\">\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\">T\u00ecnh h\u00ecnh<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">\u0110\u01b0\u1eddng d\u1eabn Q th\u00f4ng th\u01b0\u1eddng<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">T\u1ea1i sao<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Nhi\u1ec1u \u0111\u1ed9ng c\u01a1 c\u00f3 \u0111\u1ea7u d\u00e2y n\u1ed1i li\u1ec1n nhau, t\u1ea3i \u1ed5n \u0111\u1ecbnh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u00e1c t\u1ee5 \u0111i\u1ec7n \u0111\u01b0\u1ee3c thay th\u1ebf tr\u00ean <a href=\"https:\/\/cnbygele.com\/vi\/reactive-power-compensator\/\">b\u1ed9 b\u00f9 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng<\/a> gia \u0111\u00ecnh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110\u1ed9 d\u1ecbch chuy\u1ec3n Q, b\u01b0\u1edbc ch\u1eadm<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Q l\u00e0 bi\u1ebfn \u0111\u1ed5i ho\u1eb7c t\u0103ng t\u1ed1c trong qu\u00e1 tr\u00ecnh di\u1ec5n ra.<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\"><a href=\"https:\/\/cnbygele.com\/vi\/product\/svg-static-var-generators\/\">M\u00e1y ph\u00e1t c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng t\u0129nh SVG<\/a><\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Q hai chi\u1ec1u, t\u1ed1c \u0111\u1ed9 nhanh<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110i\u1ec7n th\u1ebf h\u00e0i h\u00f2a tr\u00ean c\u00e1c m\u00e1y bi\u1ebfn t\u1ea7n<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110\u01b0\u1eddng d\u1eabn Filter \/ APF, kh\u00f4ng ph\u1ea3i trang n\u00e0y<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">S\u1ef1 bi\u1ebfn d\u1ea1ng, kh\u00f4ng ph\u1ea3i l\u00e0 qu\u00e1 tr\u00ecnh t\u1ea1o ra t\u1eeb t\u00ednh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin:0 0 16px;line-height:1.7\">The <a href=\"https:\/\/cnbygele.com\/vi\/product\/svg-static-var-generators\/\">M\u00e1y ph\u00e1t c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng t\u0129nh SVG<\/a> Trang web li\u1ec7t k\u00ea c\u00e1c th\u00f4ng s\u1ed1 nh\u01b0: d\u1ecbch v\u1ee5 V t\u1eeb 230\u2013690 V, th\u1eddi gian ph\u1ea3n h\u1ed3i d\u01b0\u1edbi 10 ms, h\u1ec7 s\u1ed1 b\u00f9 \u0111\u1eafp tr\u00ean 95% v\u00e0 hi\u1ec7u su\u1ea5t tr\u00ean 97%. Nh\u1eefng con s\u1ed1 n\u00e0y m\u00f4 t\u1ea3 v\u1ec1 trang s\u1ea3n ph\u1ea9m \u0111\u00f3; ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 thay th\u1ebf cho vi\u1ec7c nghi\u00ean c\u1ee9u v\u1ec1 trang web.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/08\/svg-static-var-generator-path1.webp\" alt=\"CNBYG SVG static var generator s\u1ea3n ph\u1ea9m xem\"><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">S\u1eed d\u1ee5ng hub khi b\u01b0\u1edbc ti\u1ebfp theo v\u1eabn l\u00e0 \u201cgia \u0111\u00ecnh ph\u1ea7n c\u1ee9ng Q n\u00e0o\u201d. S\u1eed d\u1ee5ng trang SVG khi bus \u0111\u00e3 tr\u00f4ng gi\u1ed1ng nh\u01b0 m\u1ed9t t\u1ea3i ph\u1ea3n \u1ee9ng chuy\u1ec3n \u0111\u1ed9ng. C\u1ea3 hai trang \u0111\u1ec1u kh\u00f4ng ph\u1ea3i l\u00e0 bi\u1ec3u \u0111\u1ed3 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a b\u1ed9 l\u1ecdc h\u00e0i h\u00f2a.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Tr\u01b0\u1edbc khi ng\u01b0\u1eddi ta t\u00ednh to\u00e1n s\u1ed1 l\u01b0\u1ee3ng b\u01b0\u1edbc \u0111i, h\u00e3y y\u00eau c\u1ea7u c\u00f3 m\u1ed9t c\u1ea5u h\u00ecnh t\u1ea3i. M\u1ed9t ng\u00e2n h\u00e0ng d\u1eabn \u0111\u1ea7u v\u00e0o ban \u0111\u00eam tr\u00ean m\u1ed9t chi\u1ebfc xe bu\u00fdt y\u00ean t\u0129nh l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 kh\u00e1c v\u1edbi m\u1ed9t m\u00e1y t\u00ednh ch\u1ea1y ch\u1eadm v\u00e0o ban ng\u00e0y, v\u00e0 c\u00f9ng m\u1ed9t trang danh m\u1ee5c c\u00f3 th\u1ec3 ph\u1ee5c v\u1ee5 c\u1ea3 hai ch\u1ec9 khi nhi\u1ec7m v\u1ee5 th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"faqs\">C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3 style=\"margin:28px 0 12px\">V\u00ed d\u1ee5 v\u1ec1 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng l\u00e0 g\u00ec?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n khi \u0111\u1ed9ng c\u01a1 c\u1ea3m \u1ee9ng ho\u1ea1t \u0111\u1ed9ng l\u00e0 m\u1ed9t v\u00ed d\u1ee5 th\u00f4ng th\u01b0\u1eddng trong ng\u00e0nh c\u00f4ng nghi\u1ec7p. \u0110\u1ed9ng c\u01a1 v\u1eabn c\u1ea7n kilowatt \u0111\u1ec3 quay tr\u1ee5c; c\u00e1c bi\u1ebfn \u0111i\u1ec7n \u00e1p duy tr\u00ec m\u1ee9c t\u1eeb tr\u01b0\u1eddng n\u00e0y.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00e1c t\u1ee5 \u0111i\u1ec7n shunt l\u00e0 m\u1ed9t v\u00ed d\u1ee5 ng\u01b0\u1ee3c l\u1ea1i: ch\u00fang cung c\u1ea5p c\u00e1c bi\u1ebfn \u0111\u1ec3 xo\u00e1 \u0111i hi\u1ec7u \u1ee9ng tr\u01b0\u1eddng b\u1ecb ch\u1eadm.<\/p>\n<h3 style=\"margin:28px 0 12px\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00f4ng su\u1ea5t th\u1ef1c v\u00e0 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng l\u00e0 g\u00ec?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">S\u1ee9c m\u1ea1nh th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t t\u00ean g\u1ecdi kh\u00e1c c\u1ee7a s\u1ee9c m\u1ea1nh ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c th\u1ef1c s\u1ef1: l\u00e0 l\u01b0\u1ee3ng watt t\u1ea1o ra c\u00f4ng su\u1ea5t. S\u1ee9c m\u1ea1nh ph\u1ea3n \u1ee9ng l\u00e0 l\u01b0\u1ee3ng \u0111i\u1ec7n n\u0103ng ti\u00eau th\u1ee5 trung b\u00ecnh b\u1eb1ng kh\u00f4ng khi t\u1ea3i \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u1ea3 hai v\u1eabn t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n. Ch\u1ec9 c\u00f3 c\u1ed9t watt m\u1edbi hi\u1ec3n th\u1ecb l\u00e0 n\u0103ng l\u01b0\u1ee3ng h\u1eefu \u00edch.<\/p>\n<h3 style=\"margin:28px 0 12px\">C\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng ch\u1ec9 c\u00f3 \u1edf d\u1ea1ng AC?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Ph\u00e2n chia P-versus-Q \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y \u1edf \u0111\u00e2y \u00e1p d\u1ee5ng cho \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u v\u1edbi vi\u1ec7c l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng. C\u00e1c m\u1ea1ch DC kh\u00f4ng cho th\u1ea5y s\u1ef1 trao \u0111\u1ed5i tr\u01b0\u1eddng di\u1ec5n ra theo chu k\u1ef3 nh\u01b0 v\u1eady.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u1ed9t s\u1ed1 ng\u01b0\u1eddi g\u1ecdi chung chung b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb s\u1ea1c kh\u00f4ng d\u00f9ng watt n\u00e0o l\u00e0 thi\u1ebft b\u1ecb ph\u1ea3n kh\u00e1ng. B\u1ea1n n\u00ean gi\u1eef nguy\u00ean \u0111\u1ecbnh ngh\u0129a v\u1ec1 AC khi \u0111\u1ecdc ch\u1ec9 s\u1ed1 PF c\u1ee7a m\u00e1y bi\u1ebfn d\u00f2ng \u0111i\u1ec7n.<\/p>\n<h3 style=\"margin:28px 0 12px\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00f4ng su\u1ea5t th\u1ee5 \u0111\u1ed9ng l\u00e0 g\u00ec?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Google th\u01b0\u1eddng k\u1ebft h\u1ee3p c\u1ee5m t\u1eeb \u0111\u00f3 v\u1edbi c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, ch\u1ee9 kh\u00f4ng ph\u1ea3i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb \u0111o \u0111i\u1ec7n n\u0103ng. S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa thi\u1ebft k\u1ebf PFC ho\u1ea1t \u0111\u1ed9ng v\u00e0 th\u1ee5 \u0111\u1ed9ng l\u00e0 c\u1ea5u tr\u00fac ph\u1ea7n c\u1ee9ng.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng so v\u1edbi c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng l\u00e0 P so v\u1edbi Q. Gi\u1ea3i \u0111\u00e1p c\u00e2u h\u1ecfi v\u1ec1 \u0111\u1ed3ng h\u1ed3 b\u1eb1ng watt v\u00e0 vars, kh\u00f4ng ph\u1ea3i b\u1eb1ng thu\u1eadt ng\u1eef \u201cd\u00e2y \u0111i\u1ec7n th\u1ee5 \u0111\u1ed9ng\u201d.\u201d<\/p>\n<h3 style=\"margin:28px 0 12px\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng v\u00e0 c\u00f4ng su\u1ea5t bi\u1ec3u hi\u1ec7n l\u00e0 g\u00ec?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng l\u00e0 m\u1ed9t c\u1ea1nh c\u1ee7a tam gi\u00e1c. C\u00f4ng su\u1ea5t bi\u1ec3u ki\u1ebfn l\u00e0 to\u00e0n b\u1ed9 c\u1ea1nh b\u00ean: watt v\u00e0 vars \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p th\u00e0nh volt-amperes.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">B\u1ed9 bi\u1ebfn \u00e1p quan t\u00e2m \u0111\u1ebfn c\u00f4ng su\u1ea5t th\u1ef1c t\u1ebf v\u00ec d\u00f2ng \u0111i\u1ec7n trong cu\u1ed9n d\u00e2y ph\u1ee5 thu\u1ed9c v\u00e0o kVA.<\/p>\n<h3 style=\"margin:28px 0 12px\">T\u1ea1i sao c\u00e1c c\u00f4ng ty cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111i\u1ec7n l\u1ea1i quan t\u00e2m \u0111\u1ebfn c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">S\u1ef1 ti\u00eau th\u1ee5 th\u00eam d\u00f2ng \u0111i\u1ec7n t\u1eeb Q l\u00e0m n\u00f3ng c\u00e1c d\u00e2y d\u1eabn v\u00e0 ti\u00eau hao c\u00f4ng su\u1ea5t c\u1ee7a b\u1ed9 ngu\u1ed3n. \u00c1p su\u1ea5t tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n \u0111i\u1ec7n \u0111\u1ecba ph\u01b0\u01a1ng c\u0169ng ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 c\u00e2n b\u1eb1ng \u0111i\u1ec7n t\u0129nh.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao m\u1ed9t chi\u1ebfc m\u00e1y ph\u00e1t \u0111i\u1ec7n c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ra chi\u1ebfc xe \u0111i\u1ec7n PF ngay c\u1ea3 khi l\u01b0\u1ee3ng kilowatt-gi\u1edd c\u1ee7a n\u00f3 c\u00f3 v\u1ebb b\u00ecnh th\u01b0\u1eddng.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"references\">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\/AC_power\" rel=\"nofollow noopener\" target=\"_blank\">Wikipedia \u2014 D\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Power_factor\" rel=\"nofollow noopener\" target=\"_blank\">Wikipedia \u2014 H\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/x-engineer.org\/active-vs-reactive-power\/\" rel=\"nofollow noopener\" target=\"_blank\">x-engineer \u2014 C\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.eng-tips.com\/threads\/power-factor-correction-and-harmonic-resonance.488700\/\" rel=\"nofollow noopener\" target=\"_blank\">Eng-Tips \u2014 C\u1ea3i thi\u1ec7n h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t v\u00e0 c\u1ed9ng h\u01b0\u1edfng h\u00e0i h\u00f2a<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Talk:AC_power\" rel=\"nofollow noopener\" target=\"_blank\">B\u00e0i n\u00f3i chuy\u1ec7n tr\u00ean Wikipedia \u2014 Ngu\u1ed3n \u0111i\u1ec7n xoay chi\u1ec1u<\/a><\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>C\u00f4ng su\u1ea5t ho\u1ea1t \u0111\u1ed9ng t\u1ea1o ra c\u00f4ng vi\u1ec7c h\u1eefu \u00edch \u1edf d\u1ea1ng watt. C\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng duy tr\u00ec c\u00e1c tr\u01b0\u1eddng \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u \u1edf d\u1ea1ng var. Xem c\u00e1ch c\u00e1c thi\u1ebft b\u1ecb \u0111o \u0111i\u1ec7n, h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t v\u00e0 l\u1ef1a ch\u1ecdn b\u00f9 kh\u00e1c nhau.<\/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-2403","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\/2403","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=2403"}],"version-history":[{"count":1,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/posts\/2403\/revisions"}],"predecessor-version":[{"id":2530,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/posts\/2403\/revisions\/2530"}],"wp:attachment":[{"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/media?parent=2403"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/categories?post=2403"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/tags?post=2403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}