{"id":25151,"date":"2011-01-12T15:19:12","date_gmt":"2011-01-12T08:19:12","guid":{"rendered":"https:\/\/banbientan.com\/?p=25151"},"modified":"2011-01-12T15:19:12","modified_gmt":"2011-01-12T08:19:12","slug":"tim-hieu-ve-loi-mat-pha-ngo-vao-ngo-ra-tren-bien-tan-mua-ban-sua-chua-bien-tan-tai-ha-noi","status":"publish","type":"post","link":"https:\/\/hunglong.banbientan.com\/?p=25151","title":{"rendered":"T\u00ecm hi\u1ec3u v\u1ec1 l\u1ed7i m\u1ea5t pha ng\u00f5 v\u00e0o ng\u00f5 ra tr\u00ean bi\u1ebfn t\u1ea7n. Mua b\u00e1n s\u1eeda ch\u1eefa bi\u1ebfn t\u1ea7n t\u1ea1i h\u00e0 n\u1ed9i"},"content":{"rendered":"\n

\"\"<\/a>Trong qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t v\u00e0 v\u1eadn h\u00e0nh bi\u1ebfn t\u1ea7n th\u01b0\u1eddng x\u1ea3y ra m\u1ed9t s\u1ed1 l\u1ed7i li\u00ean quan t\u1edbi vi\u1ec7c m\u1ea5t pha ng\u00f5 v\u00e0o v\u00e0 ng\u00f5 ra c\u1ee7a bi\u1ebfn t\u1ea7n, m\u1eddi c\u00e1c b\u1ea1n c\u00f9ng tham kh\u1ea3o b\u00e0i vi\u1ebft sau \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 nguy\u00ean nh\u00e2n c\u0169ng nh\u01b0 c\u00e1ch kh\u1eafc ph\u1ee5c l\u1ed7i n\u00e0y nh\u00e9.<\/p>\n

L\u1ed7i m\u1ea5t pha ng\u00f5 v\u00e0o ra tr\u00ean bi\u1ebfn t\u1ea7n l\u00e0 sao ?<\/h2>\n

\u0110a s\u1ed1 c\u00e1c lo\u1ea1i bi\u1ebfn t\u1ea7n hi\u1ec7n nay \u0111\u1ec1u t\u00edch h\u1ee3p b\u1ed9 b\u1ea3o v\u1ec7 m\u1ea5t pha \u0111i\u1ec7n \u00e1p c\u1ea3 \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a bi\u1ebfn t\u1ea7n. V\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m hi\u1ec3n th\u1ecb nh\u1eefng l\u1ed7i n\u00e0y th\u01b0\u1eddng hi\u1ec3n th\u1ecb l\u00e0: ng\u00f5 v\u00e0o ILF( l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a t\u1eeb ti\u1ebfng Anh Input Phase Loss) c\u00f2n ng\u00f5 ra OLF( l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a t\u1eeb ti\u1ebfng Anh Output Phase Loss). L\u1ed7i m\u1ea5t pha ng\u00f5 v\u00e0o ng\u00f5 ra c\u1ee7a bi\u1ebfn t\u1ea7n c\u0169ng c\u00f3 th\u1ec3 do nhi\u1ec1u nguy\u00ean nh\u00e2n kh\u00e1c nhau, m\u1eddi c\u00e1c b\u1ea1n tham kh\u1ea3o th\u00eam chi ti\u1ebft c\u1ee7a hai l\u1ed7i n\u00e0y \u1edf ph\u1ea7n ti\u1ebfp theo \u1edf b\u00ean d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n

L\u1ed7i bi\u1ebfn t\u1ea7n m\u1ea5t pha ng\u00f5 v\u00e0o ILF<\/h3>\n

\u0110\u1ed1i v\u1edbi\u00a0bi\u1ebfn t\u1ea7n<\/a>\u00a0s\u1eed d\u1ee5ng \u0111i\u1ec7n 3 pha th\u00ec khi 1 trong 3 pha kh\u00f4ng c\u00f3 \u0111i\u1ec7n \u00e1p s\u1ebd khi\u1ebfn cho bi\u1ebfn t\u1ea7n b\u00e1o l\u1ed7i m\u1ea5t pha ng\u00f5 v\u00e0o. Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p b\u1ecb m\u1ea5t pha ng\u00f5 v\u00e0o do ngu\u1ed3n c\u1ea5p kh\u00f4ng \u1ed5n \u0111\u1ecbnh, l\u00fac n\u00e0y c\u00e1c b\u1ea1n ph\u1ea3i ki\u1ec3m tra l\u1ea1i d\u00e2y d\u1eabn v\u00e0 \u0111i\u1ec7n \u00e1p c\u1ee7a ngu\u1ed3n c\u1ea5p cho bi\u1ebfn t\u1ea7n. M\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p kh\u00e1c d\u00e2y d\u1eabn ho\u1eb7c \u1ed1c v\u00edt n\u1ed1i t\u1eeb domino v\u00e0o c\u1ea7u diode ch\u01b0a ti\u1ebfp x\u00fac t\u1ed1t c\u0169ng d\u1eabn t\u1edbi l\u1ed7i n\u00e0y.<\/p>\n

\u0110\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 lo\u1ea1i bi\u1ebfn t\u1ea7n c\u0169 c\u1ee7a Nh\u1eadt s\u1eed d\u1ee5ng \u0111i\u1ec7n \u00e1p 3 pha 220v m\u00e0 ta ch\u1ec9 c\u1ea5p \u0111i\u1ec7n 1 pha 220v c\u0169ng g\u00e2y ra l\u1ed7i n\u00e0y. Gi\u1ea3i ph\u00e1p cho tr\u01b0\u1eddng h\u1ee3p n\u00e0y l\u00e0 c\u1ea7u th\u00eam 1 d\u00e2y d\u1eabn sang ch\u00e2n th\u1ee9 3 ho\u1eb7c t\u1eaft ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 m\u1ea5t pha c\u1ee7a bi\u1ebfn t\u1ea7n \u0111i.<\/p>\n

\u0110\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 lo\u1ea1i bi\u1ebfn t\u1ea7n th\u00ec khi x\u1ea3y ra l\u1ed7i m\u1ea5t pha ng\u00f5 ra s\u1ebd l\u00e0m cho \u0111\u1ed9ng c\u01a1 3 pha ch\u1ea1y b\u1ecb gi\u1eadt \u1edf t\u1ea7n s\u1ed1 th\u1ea5p, n\u1ebfu \u0111\u1ec3 t\u00ecnh tr\u1ea1ng n\u00e0y k\u00e9o d\u00e0i c\u00f3 th\u1ec3 g\u00e2y h\u01b0 h\u1ecfng ch\u00e1y motor ho\u1eb7c n\u1ed5 c\u1ea3 bi\u1ebfn t\u1ea7n. V\u00ec v\u1eady khuy\u1ebfn c\u00e1o c\u00e1c b\u1ea1n n\u00ean b\u1eadt th\u00f4ng s\u1ed1 b\u1ea3o v\u1ec7 m\u1ea5t pha c\u1ee7a bi\u1ebfn t\u1ea7n l\u00ean \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u1ed1t h\u01a1n cho motor v\u00e0 bi\u1ebfn t\u1ea7n.<\/p>\n

Nguy\u00ean nh\u00e2n v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c l\u1ed7i m\u1ea5t pha ng\u00f5 ra OLF c\u1ee7a bi\u1ebfn t\u1ea7n<\/h3>\n

Khi g\u1eb7p l\u1ed7i m\u1ea5t pha ng\u00f5 ra c\u1ee7a bi\u1ebfn t\u1ea7n c\u00e1c b\u1ea1n ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc ki\u1ec3m tra sau \u0111\u00e2y. Ki\u1ec3m tra d\u00e2y d\u1eabn t\u1eeb motor t\u1edbi bi\u1ebfn t\u1ea7n c\u00f3 b\u1ecb m\u1ea5t k\u1ebft n\u1ed1i kh\u00f4ng. C\u00e1c b\u1ea1n d\u00f9ng \u0111\u1ed3ng h\u1ed3 \u0111a n\u0103ng \u0111\u1ec3 ki\u1ec3m tra vi\u1ec7c k\u1ebft n\u1ed1i d\u00e2y d\u1eabn nh\u00e9.<\/p>\n

N\u1ebfu d\u00e2y d\u1eabn v\u1eabn \u0111\u1ea3m b\u1ea3o th\u00ec c\u00e1c b\u1ea1n th\u00e1o d\u00e2y \u0111\u1ed9ng c\u01a1 v\u00e0 cho bi\u1ebfn t\u1ea7n ch\u1ea1y kh\u00f4ng c\u1ea7n \u0111\u1ed9ng c\u01a1 th\u1eed c\u00f3 v\u1ea5n \u0111\u1ec1 g\u00ec kh\u00f4ng ? Sau \u0111\u00f3 t\u1eaft ngu\u1ed3n v\u00e0 d\u00f9ng \u0111\u1ed3ng h\u1ed3 \u0111\u1ec3 \u0111o ngu\u1ed9i IGBT, l\u1ed7i n\u00e0y x\u1ea3y ra c\u0169ng c\u00f3 th\u1ec3 do IGBT b\u1ecb ch\u1ebft 1 trong 3 pha. L\u01b0u \u00fd vi\u1ec7c \u0111o \u0111\u1eb7c b\u1eb1ng \u0111\u1ed3ng h\u1ed3 ph\u1ea3i t\u1eaft ngu\u1ed3n m\u1edbi \u0111o tr\u00e1nh vi\u1ec7c g\u00e2y h\u01b0 h\u1ecfng \u0111\u1ed3ng h\u1ed3 c\u0169ng nh\u01b0 g\u00e2y ch\u00e1y n\u1ed5 cho bi\u1ebfn t\u1ea7n.<\/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<\/strong><\/p>\n

Mua b\u00e1n, l\u1eafp \u0111\u1eb7t, c\u00e0i \u0111\u1eb7t, s\u1eeda ch\u1eeda Bi\u1ebfn t\u1ea7n v\u00e0 c\u00e1c thi\u1ebft b\u1ecb t\u1ef1 \u0111\u1ed9ng h\u00f3a<\/u><\/strong><\/p>\n

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