{"id":13848276,"date":"2023-08-22T00:53:19","date_gmt":"2023-08-22T00:53:19","guid":{"rendered":"https:\/\/yp.vn\/?p=13848276"},"modified":"2023-08-22T14:53:34","modified_gmt":"2023-08-22T07:53:34","slug":"nguyen-nhan-hu-hong-khi-dong-co-dien-khong-quay","status":"publish","type":"post","link":"https:\/\/yp.vn\/nguyen-nhan-hu-hong-khi-dong-co-dien-khong-quay\/","title":{"rendered":"Nguy\u00ean nh\u00e2n h\u01b0 h\u1ecfng khi \u0110\u1ed9ng c\u01a1 \u0111i\u1ec7n kh\u00f4ng quay"},"content":{"rendered":"

Khi \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n<\/strong><\/a> b\u1ecb s\u1ef1 c\u1ed1, quan s\u00e1t t\u1eeb b\u00ean ngo\u00e0i s\u1ebd th\u1ea5y nh\u1eefng bi\u1ec3u hi\u1ec7n kh\u00e1c th\u01b0\u1eddng. C\u00e1c bi\u1ec3u hi\u1ec7n n\u00e0y kh\u00e1 \u0111a d\u1ea1ng, r\u1ea5t kh\u00f3 h\u1ec7 th\u1ed1ng th\u00e0nh quy lu\u1eadt. M\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng gi\u1ed1ng nhau c\u00f3 th\u1ec3 do nhi\u1ec1u nguy\u00ean nh\u00e2n kh\u00e1c nhau g\u00e2y ra. M\u1ed9t b\u1ed9 ph\u1eadn b\u1ecb tr\u1ee5c tr\u1eb7c c\u00f3 th\u1ec3 bi\u1ec3u hi\u1ec7n ra ngo\u00e0i d\u01b0\u1edbi nhi\u1ec1u d\u1ea1ng kh\u00f4ng gi\u1ed1ng nhau. \u0110\u1ed1i v\u1edbi hi\u1ec7n t\u01b0\u1ee3ng \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n kh\u00f4ng quay khi \u0111\u00f3ng \u0111i\u1ec7n, kh\u00f4ng th\u1ea5y bi\u1ec3u hi\u1ec7n c\u00f3 momen quay ngay c\u1ea3 khi kh\u00f4ng t\u1ea3i c\u1ea7n ph\u1ea3i ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u01b0 sau :<\/p>\n

\u0110\u1ed9ng c\u01a1 kh\u00f4ng quay, kh\u00f4ng th\u1ea5y ti\u1ebfng k\u00eau \u0111i\u1ec7n t\u1eeb, s\u1edd v\u00e0o b\u1ea7u kh\u00f4ng th\u1ea5y rung<\/strong><\/h3>\n

Khi l\u00e0m vi\u1ec7c, \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n<\/strong><\/a> bao gi\u1edd c\u0169ng c\u00f3 ti\u1ebfng k\u00eau \u0111i\u1ec7n t\u1eeb \u00e2m th\u1ea5p. \u0110\u00f3 l\u00e0 do th\u1ec3 t\u00edch l\u00f5i th\u00e9p stato b\u1ecb co gi\u00e3n c\u00f3 chu k\u1ef3 sinh ra ti\u1ebfng k\u00eau. Nh\u1eefng \u0111\u1ed9ng c\u01a1 c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao khi ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng t\u1ea3i c\u00f3 th\u1ec3 kh\u00f3 nghe ti\u1ebfng k\u00eau nh\u01b0ng s\u1edd tay v\u00e0o b\u1ea7u v\u1eabn th\u1ea5y rung. N\u1ebfu \u0111\u1ed9ng c\u01a1 kh\u00f4ng quay m\u00e0 kh\u00f4ng th\u1ea5y ti\u1ebfng k\u00eau \u0111i\u1ec7n t\u1eeb c\u0169ng kh\u00f4ng rung b\u1ea7u th\u00ec c\u00f3 ngh\u0129a l\u00e0 t\u1ea5t c\u1ea3 c\u00e1c cu\u1ed9n d\u00e2y c\u1ee7a n\u00f3 \u0111\u1ec1u kh\u00f4ng l\u00e0m vi\u1ec7c.Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y th\u01b0\u1eddng x\u1ea3y ra v\u1edbi \u0111\u1ed9ng c\u01a1 m\u1ed9t pha m\u00e0 s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p nh\u1ea5t l\u00e0 b\u1ed9 chuy\u1ec3n m\u1ea1ch b\u1ecb tr\u1ee5c tr\u1eb7c. Khi \u0111\u00f3, m\u1ea1ch \u0111i\u1ec7n c\u1ee7a \u0111\u1ed9ng c\u01a1 b\u1ecb h\u1edf n\u00ean kh\u00f4ng c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua n\u00f3. D\u00f9ng \u00f4m k\u1ebf \u0111o th\u00f4ng m\u1ea1ch gi\u1eefa hai \u0111\u1ea7u ph\u00edch c\u1eafm \u0111i\u1ec7n s\u1ebd ph\u00e1t hi\u1ec7n ra \u0111i\u1ec1u \u0111\u00f3. Tr\u01b0\u1eddng h\u1ee3p c\u1ea3 cu\u1ed9n l\u00e0m vi\u1ec7c v\u00e0 cu\u1ed9n kh\u1edfi \u0111\u1ed9ng \u0111\u1ec1u b\u1ecb \u0111\u1ee9t c\u0169ng th\u1ea5y hi\u1ec7n t\u01b0\u1ee3ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0ng ch\u1ec9 x\u1ea3y ra khi c\u00f3 s\u1ef1 \u0111\u00e1nh l\u1eeda t\u1eeb cu\u1ed9n n\u1ecd sang cu\u1ed9n kia l\u00e0m \u0111\u1ee9t d\u00e2y qu\u1ea5n.<\/p>\n

\"\"<\/p>\n

\u0110\u1ed1i v\u1edbi \u0111\u1ed9ng c\u01a1 ba pha, hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y r\u1ea5t \u00edt g\u1eb7p v\u00ec kh\u00f4ng m\u1ea5y khi c\u1ea3 ba pha \u0111\u1ec1u b\u1ecb h\u1edf m\u1ea1ch. Khi \u0111\u00f3, \u0111o \u0111i\u1ec7n \u00e1p tr\u00ean ba tr\u1ee5 \u0111\u1ea5u d\u00e2y ngo\u00e0i b\u1ea3n c\u1ef1c ph\u1ea3i thu \u0111\u01b0\u1ee3c ba gi\u00e1 tr\u1ecb \u0111i\u1ec7n \u00e1p b\u1eb1ng kh\u00f4ng. Tr\u01b0\u1eddng h\u1ee3p c\u1ea3 ba cu\u1ed9n d\u00e2y pha \u0111\u1ec1u b\u1ecb \u0111\u1ee9t t\u1eeb b\u00ean trong c\u0169ng c\u00f3 bi\u1ec3u hi\u1ec7n t\u01b0\u01a1ng t\u1ef1.<\/p>\n

\u0110\u1ed9ng c\u01a1 kh\u00f4ng quay, c\u00f3 ti\u1ebfng k\u00eau \u0111i\u1ec7n t\u1eeb ho\u1eb7c s\u1edd b\u1ea7u th\u1ea5y rung, m\u1ed3i theo chi\u1ec1u n\u00e0o th\u00ec quay l\u1edd d\u1edd theo chi\u1ec1u \u0111\u00f3<\/strong><\/h3>\n

C\u00f3 ti\u1ebfng k\u00eau \u0111i\u1ec7n t\u1eeb ch\u1ee9ng t\u1ecf \u0111\u00e3 c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n<\/strong><\/a> nh\u01b0ng kh\u00f4ng t\u1ef1 kh\u1edfi \u0111\u1ed9ng \u0111\u01b0\u1ee3c ch\u00fang t\u1ecf kh\u00f4ng c\u00f3 momen quay m\u00e0 ch\u1ec9 c\u00f3 t\u1eeb tr\u01b0\u1eddng \u0111\u1eadp m\u1ea1ch n\u00ean ch\u1ec9 quay \u0111\u01b0\u1ee3c theo chi\u1ec1u t\u00e1c \u0111\u1ed9ng t\u1eeb b\u00ean ngo\u00e0i.\u00a0 \u0110\u1ed9ng c\u01a1 m\u1ed9t pha m\u00e0 m\u1ea5t momen quay ch\u1ec9 c\u00f3 th\u1ec3 l\u00e0 \u0111\u1ee9t cu\u1ed9n d\u00e2y kh\u1edfi \u0111\u1ed9ng ho\u1eb7c h\u1ecfng t\u1ee5 \u0111i\u1ec7n. \u0110\u1ed9ng c\u01a1 ba pha m\u00e0 m\u1ea5t momen quay c\u00f3 th\u1ec3 l\u00e0 \u0111\u1ee9t d\u00e2y ch\u1ea3y \u1edf m\u1ed9t ho\u1eb7c hai trong ba d\u00e2y ch\u1ea3y \u1edf c\u1ea7u dao, \u0111\u1ee9t m\u1ed9t trong ba cu\u1ed9n d\u00e2y stato khi \u0111\u1ea5u Y\u00a0 ho\u1eb7c \u0111\u1ee9t hai trong ba cu\u1ed9n d\u00e2y pha stato khi \u0111\u1ea5u \u0394. D\u00f9ng Ampe k\u1ebf k\u00ecm, c\u1eb7p v\u00e0o d\u00e2y ba pha c\u1ee7a \u0111\u1ed9ng c\u01a1 s\u1ebd x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c pha \u0111\u1ee9t. Pha n\u00e0o \u0111\u1ee9t th\u00ec \u1edf \u0111\u00f3 kh\u00f4ng c\u1ed1 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua.<\/p>\n

\"\"N\u1ebfu kh\u00f4ng c\u00f3 ampe k\u1ebf k\u00ecm th\u00ec c\u00f3 th\u1ec3 d\u00f9ng \u00f4m k\u1ebf \u0111\u1ec3 ki\u1ec3m tra th\u00f4ng m\u1ea1ch ho\u1eb7c d\u00f9ng v\u00f4n k\u1ebf \u0111o \u0111i\u1ec7n \u00e1p. N\u1ebfu \u0111o \u0111i\u1ec7n \u00e1p c\u1ee7a t\u1eebng c\u1eb7p tr\u1ee5 ngo\u00e0i b\u1ea3n c\u1ef1c m\u00e0 thu \u0111\u01b0\u1ee3c ba gi\u00e1 tr\u1ecb \u0111o b\u1eb1ng nhau th\u00ec c\u00f3 ngh\u0129a l\u00e0 c\u1ea3 ba pha \u0111\u1ec1u kh\u00f4ng \u0111\u1ee9t. Ng\u01b0\u1ee3c l\u1ea1i l\u00e0 c\u00f3 d\u00e2y \u0111\u1ee9t.<\/p>\n

Ngo\u00e0i ra c\u00e1c \u0111\u1ed9ng c\u01a1 m\u1ed9t pha v\u00e0 ba pha b\u1ecb m\u1ea5t m\u00f4 men quay c\u00f3 th\u1ec3 c\u00f2n do h\u1ecfng c\u1ed5 g\u00f3p, bi\u1ebfn tr\u1edf ho\u1eb7c \u0111\u1ee9t c\u00e1c cu\u1ed9n d\u00e2y trong roto pha.<\/p>\n

\u0110\u1ed9ng c\u01a1 kh\u00f4ng quay, c\u00f3 ti\u1ebfng k\u00eau \u0111i\u1ec7n t\u1eeb l\u1edbn, roto b\u1ecb h\u00fat l\u1ec7ch v\u1ec1 m\u1ed9t ph\u00eda v\u00e0 b\u00f3 c\u1ee9ng, c\u00f3 n\u00f3ng c\u1ee5c b\u1ed9, nhi\u1ec7t \u0111\u1ed9 t\u0103ng r\u1ea5t nhanh.<\/strong><\/h3>\n

C\u00e1c t\u1ed5 b\u1ed1i d\u00e2y ho\u1eb7c b\u1ed1i d\u00e2y trong m\u1ed9t cu\u1ed9n d\u00e2y c\u1ee7a \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n<\/strong><\/a> \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed \u0111\u1ed1i x\u1ee9ng nhau qua tr\u1ee5c cho n\u00ean l\u1ef1c t\u1eeb t\u00e1c d\u1ee5ng l\u00ean roto lu\u00f4n c\u00e2n b\u1eb1ng v\u1ec1 m\u1ecdi ph\u00eda.Khi m\u1ed9t trong c\u00e1c t\u1ed5 b\u1ed1i d\u00e2y c\u1ee7a cu\u1ed9n d\u00e2y b\u1ecb ch\u1eadp s\u1ebd xu\u1ea5t hi\u1ec7n l\u1ef1c t\u1eeb k\u00e9o l\u1ec7ch roto v\u1ec1 m\u1ed9t ph\u00eda g\u00e2y n\u00ean hi\u1ec7n t\u01b0\u1ee3ng s\u00e1t c\u1ed1t gi\u1ea3 t\u1ea1o. L\u00fac n\u00e0y n\u1ebfu quay b\u1eb1ng tay\u00a0 s\u1ebd th\u1ea5y roto b\u1ecb b\u00f3 c\u1ee9ng nh\u01b0ng n\u1ebfu c\u1eaft \u0111i\u1ec7n th\u00ec quay l\u1ea1i \u0111\u01b0\u1ee3c nh\u1eb9 nh\u00e0ng. Roto lu\u00f4n b\u1ecb h\u00fat l\u1ec7ch v\u1ec1 ph\u00eda c\u00f3 c\u00e1c t\u1ed5 b\u1ed1i d\u00e2y c\u00f2n t\u1ed1t. \u0110\u1ed1i di\u1ec7n v\u1edbi n\u00f3 qua tr\u1ee5c l\u00e0 t\u1ed5 b\u1ed1i d\u00e2y b\u1ecb ch\u1eadp.<\/p>\n","protected":false},"excerpt":{"rendered":"

Khi \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n b\u1ecb s\u1ef1 c\u1ed1, quan s\u00e1t t\u1eeb b\u00ean ngo\u00e0i s\u1ebd th\u1ea5y nh\u1eefng bi\u1ec3u hi\u1ec7n kh\u00e1c th\u01b0\u1eddng. C\u00e1c bi\u1ec3u hi\u1ec7n n\u00e0y kh\u00e1 \u0111a d\u1ea1ng, r\u1ea5t kh\u00f3 h\u1ec7 th\u1ed1ng th\u00e0nh quy lu\u1eadt. M\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng gi\u1ed1ng nhau c\u00f3 th\u1ec3 do nhi\u1ec1u nguy\u00ean nh\u00e2n kh\u00e1c nhau g\u00e2y ra. M\u1ed9t b\u1ed9 ph\u1eadn b\u1ecb tr\u1ee5c tr\u1eb7c c\u00f3… Xem b\u00e0i vi\u1ebft<\/a><\/p>\n","protected":false},"author":8,"featured_media":13848279,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ep_exclude_from_search":false,"footnotes":""},"categories":[3573],"tags":[],"class_list":["post-13848276","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dong-co-dien"],"acf":[],"_links":{"self":[{"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/posts\/13848276","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/comments?post=13848276"}],"version-history":[{"count":0,"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/posts\/13848276\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/media\/13848279"}],"wp:attachment":[{"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/media?parent=13848276"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/categories?post=13848276"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yp.vn\/KmOMlj66m\/wp\/v2\/tags?post=13848276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}