{"id":25322,"date":"2011-01-14T15:11:13","date_gmt":"2011-01-14T08:11:13","guid":{"rendered":"https:\/\/banbientan.com\/?p=25322"},"modified":"2011-01-14T15:11:13","modified_gmt":"2011-01-14T08:11:13","slug":"y-nghia-thong-so-tan-so-song-mang-pwm-tren-bien-tan-bien-tan-tai-ha-noi","status":"publish","type":"post","link":"https:\/\/hunglong.banbientan.com\/?p=25322","title":{"rendered":"\u00dd ngh\u0129a th\u00f4ng s\u1ed1 t\u1ea7n s\u1ed1 s\u00f3ng mang PWM tr\u00ean bi\u1ebfn t\u1ea7n. BI\u1ebeN T\u1ea6N T\u1ea0I H\u00c0 N\u1ed8I"},"content":{"rendered":"\n

\"\"<\/a>H\u00f4m nay ch\u00fang t\u00f4i s\u1ebd chia s\u1ebb cho c\u00e1c b\u1ea1n m\u1ed9t s\u1ed1 th\u00f4ng tin v\u1ec1 th\u00f4ng s\u1ed1 t\u1ea7n s\u1ed1 s\u00f3ng mang PWM tr\u00ean bi\u1ebfn t\u1ea7n, m\u1eddi c\u00e1c b\u1ea1n tham kh\u1ea3o b\u00e0i vi\u1ebft sau.<\/p>\n

T\u1ea7n s\u1ed1 s\u00f3ng mang PWM tr\u00ean bi\u1ebfn t\u1ea7n l\u00e0 g\u00ec ?<\/h2>\n

Nh\u01b0 c\u00e1c b\u1ea1n \u0111\u00e3 bi\u1ebft v\u1ec1 nguy\u00ean l\u00fd c\u1ee7a\u00a0b<\/a>i\u1ebfn t\u1ea7n<\/a>, \u1edf kh\u1ed1i ng\u00f5 ra c\u1ee7a bi\u1ebfn t\u1ea7n th\u00ec IGBT s\u1ebd \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n \u0111\u00f3ng c\u1eaft \u0111\u1ec3 t\u1ea1o ra d\u1ea1ng s\u00f3ng t\u01b0\u01a1ng \u1ee9ng v\u1edbi s\u00f3ng h\u00ecnh sin gi\u00fap motor ho\u1ea1t \u0111\u1ed9ng, v\u00e0 t\u1ea7n s\u1ed1 \u0111\u1ec3 \u0111\u00f3ng c\u1eaft IGBT \u1edf \u0111\u00e2y ch\u00ednh l\u00e0 th\u00f4ng s\u1ed1 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u1ea7n s\u1ed1 s\u00f3ng mang hay PWM. Th\u01b0\u1eddng th\u00ec \u0111a s\u1ed1 bi\u1ebfn t\u1ea7n \u0111\u1ec1u c\u00f3 th\u00f4ng s\u1ed1 n\u00e0y v\u00e0 ch\u00fang ta c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh n\u00f3 t\u1eeb 2-16Khz.<\/p>\n

\u0110\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c \u0111\u00f3ng c\u1eaft t\u1ea7n s\u1ed1 n\u00e0y th\u00ec bi\u1ebfn t\u1ea7n s\u1ebd s\u1eed d\u1ee5ng m\u1ed9t vi x\u1eed l\u00fd sau \u0111\u00f3 truy\u1ec1n t\u00edn hi\u1ec7u cho m\u1ed9t IC k\u00edch \u0111\u1ec3 \u0111\u00f3ng ng\u1eaft kh\u1ed1i IGBT. Ch\u00ednh v\u00ec v\u1eady trong khi s\u1eed d\u1ee5ng bi\u1ebfn t\u1ea7n m\u00e0 h\u01b0 h\u1ecfng IC k\u00edch c\u0169ng s\u1ebd khi\u1ebfn bi\u1ebfn t\u1ea7n b\u1ecb b\u00e1o l\u1ed7i.<\/p>\n

Trong t\u00e0i li\u1ec7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t th\u00ec t\u1ea7n s\u1ed1 s\u00f3ng mang th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi v\u1edbi t\u00ean PWM ho\u1eb7c carrier frequency.<\/p>\n

T\u1ea7n s\u1ed1 s\u00f3ng mang PWM c\u00f3 t\u00e1c d\u1ee5ng g\u00ec v\u1edbi bi\u1ebfn t\u1ea7n<\/h2>\n

Th\u00f4ng s\u1ed1 t\u1ea7n s\u1ed1 s\u00f3ng mang c\u1ee7a bi\u1ebfn t\u1ea7n c\u00f3 \u00fd ngh\u0129a \u0111\u1ebfn vi\u1ec7c d\u1ea1ng t\u1ea3i c\u1ee7a bi\u1ebfn t\u1ea7n. V\u00ed d\u1ee5 nh\u01b0 \u0111\u1ed1i v\u1edbi t\u1ea3i th\u01b0\u1eddng ho\u1eb7c t\u1ea3i nh\u1eb9 ta ch\u1ec9 c\u1ea7n c\u00e0i PWM kho\u1ea3ng 2-5Khz, c\u00f2n \u0111\u1ed1i v\u1edbi d\u1ea1ng t\u1ea3i n\u1eb7ng th\u00ec ta c\u00e0i th\u00f4ng s\u1ed1 n\u00e0y \u1edf m\u1ee9c t\u1eeb 8Khz tr\u1edf l\u00ean. T\u1ea7n s\u1ed1 s\u00f3ng mang c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c t\u1ea1o s\u00f3ng h\u00e0i g\u00e2y ra ti\u1ebfng kiu c\u1ee7a motor khi ho\u1ea1t \u0111\u1ed9ng v\u1edbi bi\u1ebfn t\u1ea7n.<\/p>\n

Ngo\u00e0i ra khi d\u00e2y n\u1ed1i t\u1eeb \u0111\u1ed9ng c\u01a1 t\u1edbi bi\u1ebfn t\u1ea7n qu\u00e1 d\u00e0i th\u00ec c\u00e1c b\u1ea1n c\u1ea7n c\u00e0i \u0111\u1eb7t t\u1ea7n s\u1ed1 s\u00f3ng mang th\u00edch h\u1ee3p \u0111\u1ec3 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng b\u1ecb nhi\u1ec5u g\u00e2y t\u1ed5n hao tr\u00ean \u0111\u01b0\u1eddng d\u00e2y.<\/p>\n

Nh\u01b0 v\u1eady l\u00e0 m\u00ecnh \u0111\u00e3 gi\u1edbi thi\u1ec7u c\u01a1 b\u1ea3n v\u1ec1 th\u00f4ng s\u1ed1 t\u1ea7n s\u1ed1 s\u00f3ng mang PMW tr\u00ean bi\u1ebfn t\u1ea7n, n\u1ebfu c\u1ea7n th\u00eam h\u1ed7 tr\u1ee3 v\u00e0 t\u01b0 v\u1ea5n xin vui l\u00f2ng li\u00ean h\u1ec7 theo th\u00f4ng tin:<\/p>\n

C\u00f4ng ty TNHH \u0111i\u1ec7n v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a H\u01b0ng Long (Hung Long AE Co.,ltd)<\/strong><\/p>\n

S\u1ed1 66, Ng\u00f5 282 Kim Giang, Ph\u01b0\u1eddng \u0110\u1ea1i Kim, Qu\u1eadn Ho\u00e0ng Mai, H\u00e0 N\u1ed9i<\/b><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":25323,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[25,48,40,36],"class_list":["post-25322","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cau-hoi-ve-bien-tan","tag-bien-tan-cu-gia-re","tag-bien-tan-nhat-ban","tag-bien-tan-trung-quoc-gia-re","tag-sua-chua-bien-tan-2"],"_links":{"self":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/25322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25322"}],"version-history":[{"count":0,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/25322\/revisions"}],"wp:attachment":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}