{"id":15135,"date":"2013-12-14T09:51:22","date_gmt":"2013-12-14T02:51:22","guid":{"rendered":"https:\/\/banbientan.com\/?p=15135"},"modified":"2013-12-14T09:51:22","modified_gmt":"2013-12-14T02:51:22","slug":"bien-tan-la-gi","status":"publish","type":"post","link":"https:\/\/hunglong.banbientan.com\/?p=15135","title":{"rendered":"Bi\u1ebfn t\u1ea7n l\u00e0 g\u00ec?"},"content":{"rendered":"

\u00a0 – Bi\u1ebfn t\u1ea7n l\u00e0 g\u00ec?<\/b>
\n\u00a0\u00a0Bi\u1ebfn t\u1ea7n<\/strong><\/a>\u00a0l\u00e0\u00a0thi\u1ebft b\u1ecb bi\u1ebfn \u0111\u1ed5i d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u \u1edf t\u1ea7n s\u1ed1 n\u00e0y th\u00e0nh d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u \u1edf t\u1ea7n s\u1ed1 kh\u00e1c c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c.
\n\"so<\/a>
\n–\u00a0Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a bi\u1ebfn t\u1ea7n<\/b><\/p>\n

\u00a0\u00a0Nguy\u00ean l\u00fd c\u01a1 b\u1ea3n l\u00e0m vi\u1ec7c c\u1ee7a b\u1ed9 bi\u1ebfn t\u1ea7n c\u0169ng kh\u00e1 \u0111\u01a1n gi\u1ea3n. \u0110\u1ea7u ti\u00ean, ngu\u1ed3n \u0111i\u1ec7n xoay chi\u1ec1u 1 pha hay 3 pha \u0111\u01b0\u1ee3c ch\u1ec9nh l\u01b0u v\u00e0 l\u1ecdc th\u00e0nh ngu\u1ed3n 1 chi\u1ec1u b\u1eb1ng ph\u1eb3ng. C\u00f4ng \u0111o\u1ea1n n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi b\u1ed9 ch\u1ec9nh l\u01b0u c\u1ea7u diode v\u00e0 t\u1ee5 \u0111i\u1ec7n. Nh\u1edd v\u1eady, h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t cosphi c\u1ee7a h\u1ec7 bi\u1ebfn t\u1ea7n \u0111\u1ec1u c\u00f3 gi\u00e1 tr\u1ecb kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ea3i v\u00e0 c\u00f3 gi\u00e1 tr\u1ecb \u00edt nh\u1ea5t 0.96. \u0110i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i (ngh\u1ecbch l\u01b0u) th\u00e0nh \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u 3 pha \u0111\u1ed1i x\u1ee9ng. C\u00f4ng \u0111o\u1ea1n n\u00e0y hi\u1ec7n nay \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua h\u1ec7 IGBT (transistor l\u01b0\u1ee1ng c\u1ef1c c\u00f3 c\u1ed5ng c\u00e1ch ly) b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u ch\u1ebf \u0111\u1ed9 r\u1ed9ng xung (PWM). Nh\u1edd ti\u1ebfn b\u1ed9 c\u1ee7a c\u00f4ng ngh\u1ec7 vi x\u1eed l\u00fd v\u00e0 c\u00f4ng ngh\u1ec7 b\u00e1n d\u1eabn l\u1ef1c hi\u1ec7n nay, t\u1ea7n s\u1ed1 chuy\u1ec3n m\u1ea1ch xung c\u00f3 th\u1ec3 l\u00ean t\u1edbi d\u1ea3i t\u1ea7n s\u1ed1 si\u00eau \u00e2m nh\u1eb1m gi\u1ea3m ti\u1ebfng \u1ed3n cho \u0111\u1ed9ng c\u01a1 v\u00e0 gi\u1ea3m t\u1ed5n th\u1ea5t tr\u00ean l\u00f5i s\u1eaft \u0111\u1ed9ng c\u01a1.<\/div>\n
\u00a0T\u00ecm hi\u1ec3u th\u00eam v\u1ec1 :<\/div>\n

C\u1ea5u t\u1ea1o bi\u1ebfn t\u1ea7n<\/a> >><\/strong><\/h3>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a bi\u1ebfn t\u1ea7n<\/a> >><\/strong><\/h3>\n
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\u00a0 H\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u 3 pha \u1edf \u0111\u1ea7u ra c\u00f3 th\u1ec3 thay \u0111\u1ed5i gi\u00e1 tr\u1ecb bi\u00ean \u0111\u1ed9 v\u00e0 t\u1ea7n s\u1ed1 v\u00f4 c\u1ea5p tu\u1ef3 theo b\u1ed9 \u0111i\u1ec1u khi\u1ec3n. Theo l\u00fd thuy\u1ebft, gi\u1eefa t\u1ea7n s\u1ed1 v\u00e0 \u0111i\u1ec7n \u00e1p c\u00f3 m\u1ed9t quy lu\u1eadt nh\u1ea5t \u0111\u1ecbnh tu\u1ef3 theo ch\u1ebf \u0111\u1ed9 \u0111i\u1ec1u khi\u1ec3n. \u0110\u1ed1i v\u1edbi t\u1ea3i c\u00f3 m\u00f4 men kh\u00f4ng \u0111\u1ed5i, t\u1ec9 s\u1ed1 \u0111i\u1ec7n \u00e1p – t\u1ea7n s\u1ed1 l\u00e0 kh\u00f4ng \u0111\u1ed5i. Tuy v\u1eady v\u1edbi t\u1ea3i b\u01a1m v\u00e0 qu\u1ea1t, quy lu\u1eadt n\u00e0y l\u1ea1i l\u00e0 h\u00e0m b\u1eadc 4. \u0110i\u1ec7n \u00e1p l\u00e0 h\u00e0m b\u1eadc 4 c\u1ee7a t\u1ea7n s\u1ed1. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra \u0111\u1eb7c t\u00ednh m\u00f4 men l\u00e0 h\u00e0m b\u1eadc hai c\u1ee7a t\u1ed1c \u0111\u1ed9 ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u c\u1ee7a t\u1ea3i b\u01a1m\/qu\u1ea1t do b\u1ea3n th\u00e2n m\u00f4 men c\u0169ng l\u1ea1i l\u00e0 h\u00e0m b\u1eadc hai c\u1ee7a \u0111i\u1ec7n \u00e1p.Hi\u1ec7u su\u1ea5t chuy\u1ec3n \u0111\u1ed5i ngu\u1ed3n c\u1ee7a c\u00e1c b\u1ed9 bi\u1ebfn t\u1ea7n r\u1ea5t cao v\u00ec s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 linh ki\u1ec7n b\u00e1n d\u1eabn c\u00f4ng su\u1ea5t \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o theo c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i. Nh\u1edd v\u1eady, n\u0103ng l\u01b0\u1ee3ng ti\u00eau th\u1ee5 x\u1ea5p x\u1ec9 b\u1eb1ng n\u0103ng l\u01b0\u1ee3ng y\u00eau c\u1ea7u b\u1edfi h\u1ec7 th\u1ed1ng.Ngo\u00e0i ra, bi\u1ebfn t\u1ea7n ng\u00e0y nay \u0111\u00e3 t\u00edch h\u1ee3p r\u1ea5t nhi\u1ec1u ki\u1ec3u \u0111i\u1ec1u khi\u1ec3n kh\u00e1c nhau ph\u00f9 h\u1ee3p h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i ph\u1ee5 t\u1ea3i kh\u00e1c nhau. Ng\u00e0y nay bi\u1ebfn t\u1ea7n c\u00f3 t\u00edch h\u1ee3p c\u1ea3 b\u1ed9 PID v\u00e0 th\u00edch h\u1ee3p v\u1edbi nhi\u1ec1u chu\u1ea9n truy\u1ec1n th\u00f4ng kh\u00e1c nhau, r\u1ea5t ph\u00f9 h\u1ee3p cho vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n v\u00e0 gi\u00e1m s\u00e1t trong h\u1ec7 th\u1ed1ng SCADA.<\/div>\n
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\n\u00a0C\u00e1c lo\u1ea1i bi\u1ebfn t\u1ea7n: th\u00f4ng s\u1ed1, \u0111\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt , t\u00e0i li\u1ec7u, h\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t bien tan<\/strong><\/p>\n\n\n\n\n\n\n\n\n
Bi\u1ebfn t\u1ea7n EMERSON<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n LS<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n ABB<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n INVT<\/a><\/span><\/p>\n
Bi\u1ebfn t\u1ea7n OMRON<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n SIEMENS<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n DELTA<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n INOVANCE<\/a><\/span><\/p>\n
Bi\u1ebfn t\u1ea7n YASKAWA<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n Huyndai<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n HITACHI<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n Fuji<\/a><\/span><\/p>\n
Bi\u1ebfn t\u1ea7n Danfoss<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n CS<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n Schneider<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n Mitshubishi<\/a><\/span><\/p>\n
Bi\u1ebfn t\u1ea7n Cutes<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n Chziri<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n Chziri<\/a><\/span><\/p>\n\n
Bi\u1ebfn t\u1ea7n KEB<\/a><\/span><\/p>\nBi\u1ebfn t\u1ea7n SEW<\/a><\/span><\/p>\n\u00a0Bi\u1ebfn t\u1ea7n ADLEE<\/a><\/span><\/p>\n\n