{"id":17774,"date":"2014-08-28T10:29:40","date_gmt":"2014-08-28T03:29:40","guid":{"rendered":"https:\/\/banbientan.com\/?p=17774"},"modified":"2014-08-28T10:29:40","modified_gmt":"2014-08-28T03:29:40","slug":"cac-giai-phap-khoi-dong-dong-co-va-uu-diem-cua-bo-khoi-dong-mem-abb","status":"publish","type":"post","link":"https:\/\/hunglong.banbientan.com\/?p=17774","title":{"rendered":"C\u00e1c gi\u1ea3i ph\u00e1p kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1 v\u00e0 \u01b0u \u0111i\u1ec3m c\u1ee7a b\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m ABB"},"content":{"rendered":"

B\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m kh\u00f4ng thay \u0111\u1ed5i t\u1ea7n s\u1ed1 ngu\u1ed3n c\u1ea5p gi\u1ed1ng nh\u01b0 bi\u1ebfn t\u1ea7n<\/a>\u00a0<\/span><\/strong>. Thay v\u00e0o \u0111\u00f3 n\u00f3 t\u0103ng d\u1ea7n \u0111i\u1ec7n \u00e1p c\u1ea5p v\u00e0o \u0111\u1ed9ng c\u01a1 t\u1eeb 1 m\u1ee9c \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh tr\u01b0\u1edbc l\u00fac v\u1eeba kh\u1edfi \u0111\u1ed9ng l\u00ean \u0111\u1ebfn \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c. V\u1edbi ph\u01b0\u01a1ng ph\u00e1p kh\u1edfi \u0111\u1ed9ng n\u00e0y, ta c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c ch\u00ednh x\u00e1c l\u1ef1c kh\u1edfi \u0111\u1ed9ng mong mu\u1ed1n, b\u1ea5t k\u1ec3 \u0111\u00f3 l\u00e0 kh\u1edfi \u0111\u1ed9ng kh\u00f4ng t\u1ea3i hay c\u00f3 t\u1ea3i. Kh\u1edfi \u0111\u1ed9ng m\u1ec1m gi\u00fap gi\u1ea3m d\u00f2ng kh\u1edfi \u0111\u1ed9ng t\u1eeb \u0111\u00f3 tr\u00e1nh g\u00e2y s\u1ee5t \u00e1p trong h\u1ec7 th\u1ed1ng ngu\u1ed3n \u0111i\u1ec7n. B\u00ean c\u1ea1nh \u0111\u00f3 n\u00f3 c\u0169ng gi\u00fap gi\u1ea3m c\u00e1c xung l\u1ef1c c\u01a1 kh\u00ed l\u00ean thi\u1ebft b\u1ecb khi kh\u1edfi \u0111\u1ed9ng do v\u1eady gi\u00e0m \u0111\u01b0\u1ee3c chi ph\u00ed b\u1ea3o tr\u00ec, b\u1ea3o d\u01b0\u1ee1ng. Kh\u1edfi \u0111\u1ed9ng m\u1ec1m c\u0169ng c\u00f3 ch\u1ee9c n\u0103ng d\u1eebng m\u1ec1m nh\u01b0 bien tan<\/strong><\/a>, n\u00f3 lo\u1ea1i tr\u1eeb \u0111\u01b0\u1ee3c c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng x\u1ea5u nh\u01b0 xung \u00e1p l\u1ef1c n\u01b0\u1edbc, t\u0103ng v\u1ecdt \u00e1p su\u1ea5t trong h\u1ec7 th\u1ed1ng b\u01a1m v\u00e0 tr\u00e1nh c\u00e1c h\u01b0 h\u1ecfng cho c\u00e1c v\u1eadt li\u1ec7u d\u1ec5 v\u1ee1 khi \u0111\u01b0\u1ee3c t\u1ea3i tr\u00ean b\u0103ng chuy\u1ec1n.\u00a0<\/span>

\"ABB_1\"<\/a>\u00a0\u00a0
T\u1ea5t c\u1ea3 \u0111\u1ed9ng c\u01a1 \u0111\u1ec1u \u0111\u1ec1u \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng hay lai c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau. Ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u00e0i \u1ee9ng d\u1ee5ng \u0111\u1ed9ng c\u01a1 th\u00f4ng d\u1ee5ng nh\u1ea5t: b\u01a1m ly t\u00e2m, qu\u1ea1t v\u00e0 m\u00e1y n\u00e9n….\u00a0<\/span>

1\/ Qu\u1ea1t ly t\u00e2m:<\/span><\/strong>
Qu\u1ea1t th\u01b0\u1eddng c\u1ea7n momen qu\u00e1n t\u00ednh l\u1edbn khi kh\u1edfi \u0111\u1ed9ng do n\u00f3 c\u00f3 c\u00e1c c\u00e1nh gi\u00f3 l\u1edbn. \u0110\u00f4i khi \u0111\u1ec3 gi\u1ea3m t\u1ea3i khi kh\u1edfi \u0111\u1ed9ng, ng\u01b0\u1eddi ta \u0111\u00f3ng k\u00edn van c\u1ea5p gi\u00f3, qu\u1ea1t kh\u1edfi \u0111\u1ed9ng \u1edf ch\u1ebf \u0111\u1ed9 kh\u00f4ng t\u1ea3i n\u00ean vi\u1ec7c kh\u1edfi \u0111\u1ed9ng d\u1ec5 d\u00e0ng h\u01a1n . Tuy nhi\u00ean momen qu\u00e1n t\u00ednh kh\u1edfi \u0111\u1ed9ng v\u1eabn cao n\u00ean th\u1eddi gian kh\u1edfi \u0111\u1ed9ng v\u1eabn c\u00f2n kh\u00e1 d\u00e0i.<\/span>
Kh\u1edfi \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp: monen qu\u00e1n t\u00ednh cao c\u1ee7a c\u00e1nh qu\u1ea1t s\u1ebd d\u1eabn t\u1edbi th\u1eddi gian kh\u1edfi \u0111\u1ed9ng d\u00e0i. D\u00f2ng khi kh\u1edfi \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp r\u1ea5t cao c\u00f3 th\u1ec3 l\u00e0m s\u1ee5t nghi\u00eam tr\u1ecdng \u0111i\u1ec7n \u00e1p ngu\u1ed3n g\u00e2y \u1ea3nh h\u01b0\u1edfng t\u1edbi c\u00e1c thi\u1ebft kh\u00e1c.\u00a0<\/span>
Qu\u1ea1t ly t\u00e2m th\u01b0\u1eddng \u0111\u01b0\u1ee3c k\u00e9o b\u1edfi 1 hay nhi\u1ec1u d\u00e2y \u0111ai truy\u1ec1n l\u1ef1c. Trong khi kh\u1edfi \u0111\u1ed9ng, c\u00e1c \u0111ai n\u00e0y c\u00f3 xu h\u01b0\u1edbng b\u1ecb tr\u01b0\u1ee3t do l\u1ef1c kh\u1edfi \u0111\u1ed9ng qu\u00e1 l\u1edbn v\u00e0 c\u00e1c \u0111ai n\u00e0y kh\u00f4ng th\u1ec3 truy\u1ec1n t\u1ea5t c\u1ea3 l\u1ef1c do \u0111\u1ed9ng c\u01a1 t\u1ea1o ra. \u0110i\u1ec1u n\u00e0y l\u00e0m t\u0103ng chi ph\u00ed b\u1ea3o d\u01b0\u1ee1ng cho \u0111ai truy\u1ec1n, c\u00e1c \u1ed5 \u0111\u1ee1 v\u00e0 g\u00e2y t\u1ed5n th\u1ea5t do d\u1eebng s\u1ea3n xu\u1ea5t \u0111\u1ec3 thay th\u1ebf.\u00a0<\/span>

Kh\u1edfi \u0111\u1ed9ng sao-tam gi\u00e1c : ph\u01b0\u01a1ng ph\u00e1p n\u00e0y t\u1ea1o l\u1ef1c kh\u1edfi \u0111\u1ed9ng th\u1ea5p. Do l\u1ef1c t\u1ef7 l\u1ec7 v\u1edbi b\u00ecnh ph\u01b0\u01a1ng d\u00f2ng \u0111i\u1ec7n, l\u1ef1c do \u0111\u1ed9ng c\u01a1 t\u1ea1o ra \u1edf ch\u1ebf \u0111\u1ed9 sao c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ee7 m\u1ea1nh \u0111\u1ec3 gia t\u1ed1c c\u00e1nh qu\u1ea1t \u0111\u1ea1t t\u1edbi t\u1ed1c \u0111\u1ed9 \u0111\u1ecbnh m\u1ee9c. Khi chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 tam gi\u00e1c, xung l\u1ef1c v\u00e0 d\u00f2ng \u0111i\u1ec7n t\u0103ng v\u1ecdt v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 b\u1eb1ng ho\u1eb7c th\u1eadm ch\u00ed l\u1edbn h\u01a1n so v\u1edbi kh\u1edfi \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp. \u0110i\u1ec1u n\u00e0y l\u00e0m \u0111ai truy\u1ec1n \u0111\u1ed9ng b\u1ecb tr\u01b0\u1ee3t. Ta c\u00f3 th\u1ec3 kh\u1eafc ph\u1ee5c b\u1eb1ng c\u00e1ch k\u00e9o c\u0103ng \u0111ai truy\u1ec1n, nh\u01b0ng l\u00e0m v\u1eady s\u1ebd t\u0103ng \u00e1p l\u1ef1c c\u01a1 l\u00ean c\u00e1c \u1ed5 \u0111\u1ee1 t\u1ea1i c\u1ea3 \u0111\u1ed9ng c\u01a1 v\u00e0 qu\u1ea1t t\u1eeb \u0111\u00f3 l\u00e0m t\u0103ng chi ph\u00ed b\u1ea3o d\u01b0\u1ee1ng.\u00a0<\/span>
Kh\u1edfi \u0111\u1ed9ng m\u1ec1m: \u0111\u1ec3 kh\u1eafc ph\u1ee5c v\u1ea5n \u0111\u1ec1 \u0111ai truy\u1ec1n b\u1ecb tr\u01b0\u1ee3t, ta c\u1ea7n gi\u00e0m momen l\u1ef1c t\u1ea1i th\u1eddi \u0111i\u1ec3m kh\u1edfi \u0111\u1ed9ng. C\u00e1c b\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m c\u1ee7a ABB s\u1ebd gi\u00e0m \u0111i\u1ec7n \u00e1p c\u1ea5p v\u00e0o \u0111\u1ed9ng c\u01a1 t\u1ea1i th\u1eddi \u0111i\u1ec3m kh\u1edfi \u0111\u1ed9ng. Sau \u0111\u00f3 \u0111i\u1ec7n \u00e1p s\u1ebd \u0111\u01b0\u1ee3c t\u0103ng l\u00ean \u0111\u1ec3 k\u00e9o c\u00e1nh qu\u1ea1t. B\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m cho ph\u00e9p ta \u0111i\u1ec1u ch\u1ec9nh l\u1ef1c kh\u1edfi \u0111\u1ed9ng ph\u00f9 h\u1ee3p v\u1edbi b\u1ea5t k\u1ef3 \u0111i\u1ec1u ki\u1ec7n kh\u1edfi \u0111\u1ed9ng n\u00e0o, c\u1ea3 kh\u00f4ng t\u1ea3i l\u1eabn to\u00e0n t\u1ea3i. D\u00f2ng kh\u1edfi \u0111\u1ed9ng s\u1ebd gi\u1ea3m v\u00e0 tr\u00e1nh \u0111\u01b0\u1ee3c s\u1ee5t \u00e1p ngu\u1ed3n l\u01b0\u1edbi.\u00a0<\/span>
M\u1ed9t s\u1ed1 b\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n b\u1ed9 b\u1ea3o v\u1ec7 non t\u1ea3i, n\u00f3 s\u1ebd d\u1eebng \u0111\u1ed9ng c\u01a1 khi nh\u1eadn th\u1ea5y d\u00f2ng \u0111i\u1ec7n b\u1ecb s\u1ee5t do \u0111\u1ee9t d\u00e2y \u0111ai.\u00a0<\/span>

L\u1ef1a ch\u1ecdn b\u1ed9 kh\u1edfi \u0111\u1ed9ng: C\u00e1nh qu\u1ea1t th\u01b0\u1eddng l\u1edbn, t\u1ea1o ra l\u1ef1c qu\u00e1n t\u00ednh l\u1edbn n\u00ean kh\u1edfi \u0111\u1ed9ng th\u01b0\u1eddng kh\u00f3 kh\u0103n. Ta n\u00ean ch\u1ecdn b\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m c\u00f3 c\u00f4ng su\u1ea5t l\u1edbn h\u01a1n c\u00f4ng su\u1ea5t th\u1ef1c c\u1ee7a \u0111\u1ed9ng c\u01a1. Qu\u00e1n t\u00ednh l\u1edbn c\u1ee7a qu\u1ea1t l\u00e0m t\u0103ng th\u1eddi gian d\u1eebng, ta n\u00ean tr\u00e1nh s\u1eed d\u1ee5ng ch\u1ee9c n\u0103ng d\u1eebng theo h\u00e0m d\u1ed1c.\u00a0<\/span>

\"ABB_2\"
\n
Th\u00f4ng s\u1ed1 c\u00e0i \u0111\u1eb7t khuy\u1ebfn ngh\u1ecb:<\/span>
Start ramp: 10 sec\u00a0<\/span>
Stop ramp: 0 sec\u00a0<\/span>
Initial voltage: 30 %\u00a0<\/span>
Current limit: 4\u00a0<\/span>

2\/B\u01a1m ly t\u00e2m:<\/span><\/strong>
C\u00f3 nhi\u1ec1u lo\u1ea1i b\u01a1m nh\u01b0 b\u01a1m p\u00edt-t\u00f4ng, b\u01a1m ly t\u00e2m, b\u01a1m tr\u1ee5c v\u00edt\u2026 Trong \u0111\u00f3 b\u01a1m ly t\u00e2m l\u00e0 lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t, ta s\u1ebd th\u1ea3o lu\u1eadn v\u1ec1 lo\u1ea1i b\u01a1m n\u00e0y.<\/span>

Kh\u1edfi \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp: kh\u1edfi \u0111\u1ed9ng b\u01a1m kh\u00f4ng g\u00e2y v\u1ea5n \u0111\u1ec1 g\u00ec v\u1ec1 \u0111i\u1ec7n nh\u01b0ng n\u00f3 s\u1ebd l\u00e0m h\u1ec7 th\u1ed1ng \u1ed1ng d\u1eabn b\u1ecb m\u00f2n v\u00e0 tr\u1ea7y x\u01b0\u1edbt do c\u00e1c xung \u00e1p l\u1ef1c ch\u1ea5t l\u1ecfng, \u0111\u1eb7t bi\u1ec7t l\u00e0 khi d\u1eebng \u0111\u1ed9t ng\u1ed9t. Do qu\u00e1n t\u00ednh c\u00e1nh b\u01a1m nh\u1ecf v\u00e0 momen h\u00e3m l\u1edbn, d\u1eebng tr\u1ef1c ti\u1ebfp b\u01a1m \u0111\u1ed9t ng\u1ed9t s\u1ebd t\u1ea1o ra c\u00e1c xung b\u00faa v\u00e0 \u00e1p l\u1ef1c r\u1ea5t l\u1edbn. N\u1ebfu h\u00ea th\u1ed1ng \u00edt khi d\u1eebng th\u00ec kh\u00f4ng c\u00f3 v\u1ea5n \u0111\u1ec1, nh\u01b0ng n\u1ebfu c\u1ea7n kh\u1edfi \u0111\u1ed9ng-d\u1eebng li\u00ean t\u1ee5c n\u00f3 s\u1ebd b\u00e0o m\u00f2n to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng b\u01a1m. \u0110i\u1ec1u n\u00e0y g\u00e2y ra chi ph\u00ed b\u1ea3o tr\u00ec l\u1edbn, th\u1eadm ch\u00ed ph\u1ea3i d\u1eebng s\u1ea3n xu\u1ea5t b\u1ea5t th\u01b0\u1eddng \u0111\u1ec3 s\u1eeda ch\u1eefa.<\/span>

Kh\u1edfi \u0111\u1ed9ng sao-tam gi\u00e1c: d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1ebd gi\u1ea3m \u0111\u01b0\u1ee3c d\u00f2ng kh\u1edfi \u0111\u1ed9ng. Tuy nhi\u00ean \u0111\u1ed9ng c\u01a1 c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ee7 l\u1ef1c \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng v\u00e0 kh\u00f4ng \u0111\u1ea1t t\u1edbi \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 \u0111\u1ecbnh m\u1ee9c \u1edf ch\u1ebf \u0111\u1ed9 sao. Momen xo\u1eafn t\u1ea3i b\u1eadc hai tr\u1edf n\u00ean qu\u00e1 l\u1edbn \u0111\u1ed1i v\u1edbi \u0111\u1ed9ng c\u01a1 khi n\u00f3 \u0111\u1ea1t t\u1edbi 80-85% t\u1ed1c \u0111\u1ed9 \u0111inh m\u1ee9c. \u0110\u1ec3 ti\u1ebfp t\u1ee5c gia t\u1ed1c l\u00ean t\u1ed1c \u0111\u1ed9 \u0111\u1ecbnh m\u1ee9c, ch\u1ebf \u0111\u1ed9 tam gi\u00e1c \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o, khi \u0111\u00f3 c\u00f4ngt\u1eafct\u01a1 sao m\u1edf, c\u00f4ngt\u1eafct\u01a1 tam gi\u00e1c \u0111\u00f3ng. \u0110\u1ec3 tr\u00e1nh ng\u1eafn m\u1ea1ch, c\u1ea7n c\u00f3 th\u1eddi gian tr\u1ec5 kho\u1ea3ng 50ms khi chuy\u1ec3n gi\u1eefa 2 ch\u1ebf \u0111\u1ed9. Tuy nhi\u00ean, do momen h\u00e3m c\u1ee7a b\u01a1m l\u1edbn, \u0111\u1ed9ng c\u01a1 s\u1ebd gi\u1ea3m t\u1ed1c trong kho\u1ea3ng th\u1eddi gian n\u00e0y. Trong \u0111\u1ed9ng c\u01a1 v\u1eabn c\u00f3 t\u1eeb tr\u01b0\u1eddng v\u00e0 khi c\u00f4ngt\u1eafct\u01a1 tam gi\u00e1c \u0111\u00f3ng v\u00e0o, \u0111i\u1ec7n \u00e1p ch\u00eanh l\u1ec7ch gi\u1eefa l\u01b0\u1edbi v\u00e0 \u0111\u1ed9ng c\u01a1 c\u00f3 th\u1ec3 t\u0103ng l\u00ean g\u1ea5p \u0111\u00f4i, t\u1edbi 800V \u0111\u1ed1i v\u1edbi l\u01b0\u1edbi 400V. \u0110i\u1ec7n \u00e1p 800V n\u00e0y s\u1ebd t\u1ea1o ra xung d\u00f2ng \u0111i\u1ec7n r\u1ea5t cao, c\u00f3 th\u1ec3 cao h\u01a1n c\u1ea3 xung t\u1eeb h\u00f3a c\u1ef1c \u0111\u1ea1i khi kh\u1edfi \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 t\u1ea1o ra xung l\u1ef1c l\u1edbn v\u00e0 sau v\u00e0i l\u1ea7n kh\u1edfi \u0111\u1ed9ng ,tr\u1ee5c n\u1ed1i gi\u1eefa \u0111\u1ed9ng c\u01a1 v\u00e0 t\u1ea3i c\u00f3 th\u1ec3 b\u1ecb h\u1ecfng.\u00a0<\/span>
B\u00ean c\u1ea1nh \u0111\u00f3, ta ch\u1ec9 c\u00f3 th\u1ec3 d\u1eebng tr\u1ef1c ti\u1ebfp v\u00e0 \u0111i\u1ec1u n\u00e0y c\u0169ng g\u00e2y ra c\u00e1c xung b\u00faa v\u00e0 \u00e1p su\u1ea5t cao khi d\u1eebng.<\/span>

Kh\u1edfi \u0111\u1ed9ng m\u1ec1m: B\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m c\u1ee7a ABB s\u1ebd gi\u00fap l\u00e0m gi\u1ea3m momen kh\u1edfi \u0111\u1ed9ng ban \u0111\u1ea7u c\u1ee7a \u0111\u1ed9ng c\u01a1 b\u1eb1ng vi\u1ec7c gi\u1ea3m \u0111i\u1ec7n \u00e1p c\u1ea5p v\u00e0o. Trong qu\u00e1 tr\u00ecnh kh\u1edfi \u0111\u1ed9ng, n\u00f3 s\u1ebd t\u0103ng \u0111i\u1ec7n \u00e1p l\u00ean cho \u0111\u1ed9ng c\u01a1 \u0111\u1ee7 m\u1ea1nh \u0111\u1ec3 gia t\u1ed1c b\u01a1m l\u00ean t\u1ed1c \u0111\u1ed9 \u0111\u1ecbnh m\u1ee9c m\u00e0 kh\u00f4ng g\u00e2y ra c\u00e1c xung l\u1ef1c hay xung d\u00f2ng n\u00e0o. B\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m c\u0169ng h\u1ed7 tr\u1ee3 khi d\u1eebng b\u01a1m nh\u1edd ch\u1ee9c n\u0103ng gi\u1ea3m t\u1ed1c theo h\u00e0m d\u1ed1c c\u1ee7a \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o, nh\u1edd v\u1eady tr\u00e1nh \u0111\u01b0\u1ee3c c\u00e1c xung b\u00faa v\u00e0 \u00e1p su\u1ea5t cao khi d\u1eebng. Tuy nhi\u00ean, trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, ch\u1ee9c n\u0103ng tr\u00ean v\u1eabn ch\u01b0a \u0111\u1ee7. Khi \u0111\u00f3 ta ph\u1ea3i d\u00f9ng b\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c momen nh\u1eb1m gi\u1ea3m l\u1ef1c v\u00e0 d\u1eebng \u0111\u1ed9ng c\u01a1 theo c\u00e1ch t\u1ed1i \u01b0u nh\u1ea5t \u0111\u1ec3 tr\u00e1nh ho\u00e0n to\u00e0n hi\u1ec7n t\u01b0\u1ee3ng b\u00faa n\u01b0\u1edbc.<\/span>
M\u1ed9t s\u1ed1 b\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m c\u00f2n c\u00f3 ch\u1ee9c n\u0103ng: b\u1ea3o v\u1ec7 non t\u1ea3i gi\u00fap b\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1 khi b\u01a1m kh\u00f4ng c\u00f3 n\u01b0\u1edbc, k\u00edch kh\u1edfi \u0111\u1ed9ng c\u00e1c b\u1ed9 b\u01a1m v\u00e0 kh\u00f3a r\u00f4to \u0111\u1ec3 tr\u00e1nh h\u01b0 h\u1ecfng do b\u1ecb k\u1eb9t khi v\u1eadn h\u00e0nh.<\/span>

L\u1ef1a ch\u1ecdn b\u1ed9 kh\u1edfi \u0111\u1ed9ng: b\u01a1m th\u01b0\u1eddng c\u00f3 c\u00e1nh b\u01a1m nh\u1ecf v\u1edbi qu\u00e1n t\u00ednh \u00edt. \u0110i\u1ec1u n\u00e0y gi\u00fap ta ch\u1ecdn b\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m c\u00f3 c\u00f4ng su\u1ea5t b\u1eb1ng v\u1edbi c\u00f4ng su\u1ea5t th\u1ef1c c\u1ee7a b\u01a1m. N\u1ebfu b\u01a1m ph\u1ea3i th\u01b0\u1eddng xuy\u00ean kh\u1edfi \u0111\u1ed9ng, 10 l\u1ea7n\/gi\u1edd th\u00ec n\u00ean ch\u1ecdn c\u00f4ng su\u1ea5t b\u1ed9 kh\u1edfi \u0111\u1ed9ng cao h\u01a1n 1 c\u1ea5p.<\/span>

\"ABB_3\"
\n
<\/p>\n

Th\u00f4ng s\u1ed1 c\u00e0i \u0111\u1eb7t khuy\u1ebfn ngh\u1ecb:
\nStart ramp: 10 sec
\nStop ramp: 10 – 20 sec
\nInitial voltage: 30 %
\nStop mode: Torque control
\nCurrent limit: 3.5<\/div>\n
<\/div>\n
3\/ M\u00e1y n\u00e9n :<\/strong>
\nM\u00e1y n\u00e9n lo\u1ea1i nh\u1ecf th\u01b0\u1eddng l\u00e0 lo\u1ea1i p\u00edt-t\u00f4ng v\u00e0 momen t\u1ea3i t\u0103ng tuy\u1ebfn t\u00ednh theo t\u1ed1c \u0111\u1ed9. M\u00e1y n\u00e9n tr\u1ee5c v\u00edt \u0111\u01b0\u1ee3c d\u00f9ng khi c\u00f3 y\u00eau c\u1ea7u l\u01b0u l\u01b0\u1ee3ng kh\u00ed l\u1edbn h\u01a1n v\u00e0 momen t\u1ea3i t\u0103ng theo b\u00ecnh ph\u01b0\u01a1ng t\u1ed1c \u0111\u1ed9. Truy\u1ec1n \u0111\u1ed9ng gi\u1eefa \u0111\u1ed9ng c\u01a1 v\u00e0 \u0111\u1ea7u n\u00e9n l\u00e0 lo\u1ea1i d\u00e2y \u0111ai ho\u1eb7c tr\u1ef1c ti\u1ebfp qua c\u00e1c b\u00e1nh r\u0103ng c\u01a1 kh\u00ed. H\u1ea7u h\u1ebft m\u00e1y n\u00e9n \u0111\u01b0\u1ee3c kh\u1edfi \u0111\u1ed9ng khi kh\u00f4ng t\u1ea3i.
\nKh\u1edfi \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp: m\u00e1y n\u00e9n kh\u1edfi \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp t\u1ea1o ra xung c\u01a1 h\u1ecdc r\u1ea5t l\u1edbn kh\u00f4ng nh\u1eefng l\u00ean ngay ch\u00ednh b\u1ea3n th\u00e2n n\u00f3 m\u00e0 c\u00f2n l\u00ean c\u00e1c d\u00e2y \u0111ai, kh\u1edbp n\u1ed1i. \u0110i\u1ec1u \u0111\u00f3 l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb.Trong tr\u01b0\u1eddng h\u1ee3p d\u00f9ng \u0111ai truy\u1ec1n \u0111\u1ed9ng, \u0111ai s\u1ebd b\u1ecb tr\u01b0\u1ee3t r\u1ea5t nhi\u1ec1u khi kh\u1edfi \u0111\u1ed9ng do momen kh\u1edfi \u0111\u1ed9ng l\u1edbn.
\nKh\u1edfi \u0111\u1ed9ng sao-tam gi\u00e1c: gi\u00fap gi\u1ea3m xung l\u1ef1c v\u00e0 d\u00f2ng kh\u1edfi \u0111\u1ed9ng nh\u01b0ng \u0111\u1ed9ng c\u01a1 s\u1ebd t\u1ea1o l\u1ef1c r\u1ea5t y\u1ebfu kh\u00f3 gia t\u1ed1c \u0111\u1ec3 t\u0103ng l\u00ean t\u1ed1c \u0111\u1ed9 \u0111\u1ecbnh m\u1ee9c. Khi chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 tam gi\u00e1c, c\u1ea3 d\u00f2ng v\u00e0 momen t\u1ea3i t\u0103ng v\u1ecdt s\u1ebd g\u00e2y ra c\u00e1c xung l\u1ef1c c\u01a1 kh\u00ed l\u1edbn.
\nKh\u1edfi \u0111\u1ed9ng m\u1ec1m: Kh\u1edfi \u0111\u1ed9ng m\u1ec1m ABB <\/a>c\u00f3 kh\u1ea3 n\u0103ng gi\u1edbi h\u1ea1n momen kh\u1edfi \u0111\u1ed9ng t\u1edbi 1 m\u1ee9c ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau. Nh\u1edd v\u1eady, c\u00e1c kh\u1edbp n\u1ed1i, \u1ed5 \u0111\u1ee1 \u00edt ch\u1ecbu c\u00e1c xung \u00e1p l\u1ef1c, \u0111ai truy\u1ec1n \u0111\u1ed9ng c\u0169ng kh\u00f4ng b\u1ecb tr\u01b0\u1ee3t khi kh\u1edfi \u0111\u1ed9ng. Ch\u00ed ph\u00ed b\u1ea3o tr\u00ec s\u1ebd gi\u1ea3m xu\u1ed1ng m\u1ee9c t\u1ed1i thi\u1ec3u. D\u00f2ng kh\u1edfi \u0111\u1ed9ng trong gi\u1ea3i ph\u00e1p n\u00e0y ch\u1ec9 t\u1eeb 3-4 l\u1ea7n d\u00f2ng \u0111\u1ecbnh m\u1ee9c.
\nL\u1ef1a ch\u1ecdn kh\u1edfi \u0111\u1ed9ng m\u1ec1m:
\nCh\u1ecdn b\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m theo c\u00f4ng su\u1ea5t th\u1ef1c \u0111\u1ed9ng c\u01a1. N\u1ebfu m\u00e1y n\u00e9n l\u00e0m vi\u1ec7c \u1edf m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p n\u1eb7ng, c\u1ea7n n\u00e2ng c\u00f4ng su\u1ea5t c\u1ee7a b\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m l\u00ean 1 c\u1ea5p. T\u01b0\u01a1ng t\u1ef1, n\u1ebfu kh\u1edfi \u0111\u1ed9ng m\u00e1y n\u00e9n 10 l\u1ea7n\/ gi\u1edd th\u00ec c\u0169ng ph\u1ea3i n\u00e2ng c\u00f4ng su\u1ea5t b\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m.
\n\"ABB_4\"<\/div>\n
Th\u00f4ng s\u1ed1 c\u00e0i \u0111\u1eb7t khuy\u1ebfn ngh\u1ecb:
\nStart ramp: 5 sec
\nStop ramp: 0 sec
\nInitial voltage: 30 % (piston compressor)
\n40 % (screw compressor)
\nCurrent limit: 3.5 *<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

B\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ec1m kh\u00f4ng thay \u0111\u1ed5i t\u1ea7n s\u1ed1 ngu\u1ed3n c\u1ea5p gi\u1ed1ng nh\u01b0 bi\u1ebfn t\u1ea7n\u00a0. Thay v\u00e0o \u0111\u00f3 n\u00f3 t\u0103ng d\u1ea7n \u0111i\u1ec7n \u00e1p c\u1ea5p v\u00e0o \u0111\u1ed9ng c\u01a1 t\u1eeb 1 m\u1ee9c \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh tr\u01b0\u1edbc l\u00fac v\u1eeba kh\u1edfi \u0111\u1ed9ng l\u00ean \u0111\u1ebfn \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c. V\u1edbi ph\u01b0\u01a1ng ph\u00e1p kh\u1edfi \u0111\u1ed9ng n\u00e0y, ta c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh […]<\/p>\n","protected":false},"author":2,"featured_media":17776,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11499],"tags":[12795,12796],"class_list":["post-17774","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc-tu-dong-hoa","tag-abb","tag-khoi-dong-mem-abb"],"_links":{"self":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/17774","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=17774"}],"version-history":[{"count":0,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/17774\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/"}],"wp:attachment":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17774"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17774"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}