{"id":2348,"date":"2026-08-08T09:00:00","date_gmt":"2026-08-08T01:00:00","guid":{"rendered":"https:\/\/cnbygele.com\/blog\/paper-mill-refiner-vfd-harmonics\/"},"modified":"2026-08-24T17:24:23","modified_gmt":"2026-08-24T09:24:23","slug":"paper-mill-refiner-vfd-harmonics","status":"publish","type":"post","link":"https:\/\/cnbygele.com\/vi\/blog\/paper-mill-refiner-vfd-harmonics\/","title":{"rendered":"C\u00e1ch \u0110\u1ecdc S\u00f3ng H\u00e0i VFD C\u1ee7a M\u00e1y Nghi\u1ec1n B\u1ed9t Gi\u1ea5y Trong Nh\u00e0 M\u00e1y Gi\u1ea5y"},"content":{"rendered":"
\n

B\u1ed9 truy\u1ec1n \u0111\u1ed9ng c\u1ee7a m\u00e1y nghi\u1ec1n c\u00f3 th\u1ec3 chuy\u1ec3n t\u1eeb tr\u1ea1ng th\u00e1i kh\u1edfi \u0111\u1ed9ng sang kh\u00f4ng t\u1ea3i, s\u1ea3n xu\u1ea5t, \u0111\u1ed5i m\u1ebb v\u00e0 chuy\u1ec3n d\u00f2ng (bypass) ch\u1ec9 trong m\u1ed9t ng\u00e0y v\u1eadn h\u00e0nh. C\u00e1c tr\u1ea1ng th\u00e1i \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 c\u00f4ng su\u1ea5t c\u00f4ng ngh\u1ec7 v\u00e0 bi\u1ec3u \u0111\u1ed3 \u0111i\u1ec7n n\u0103ng. Do \u0111\u00f3, m\u1ed9t nh\u00e0 m\u00e1y gi\u1ea5y c\u1ea7n c\u00f3 hai g\u00f3c nh\u00ecn li\u00ean k\u1ebft v\u1edbi nhau: m\u00e1y nghi\u1ec1n \u0111ang l\u00e0m g\u00ec v\u1ec1 m\u1eb7t c\u01a1 kh\u00ed, v\u00e0 b\u1ed9 c\u1ea5p li\u1ec7u c\u0169ng nh\u01b0 thanh c\u00e1i c\u1ee7a nh\u00e0 m\u00e1y \u0111ang ghi nh\u1eadn g\u00ec v\u1ec1 m\u1eb7t \u0111i\u1ec7n n\u0103ng.<\/p>\n

\"D\u00f2ng<\/figure>\n

N\u00eau t\u00ean c\u00e1c tr\u1ea1ng th\u00e1i c\u1ee7a nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u tr\u01b0\u1edbc khi m\u1edf ph\u1ed5<\/h2>\n

M\u1ed9t t\u1eadp h\u1ee3p tr\u1ea1ng th\u00e1i h\u1eefu \u00edch bao g\u1ed3m kh\u1edfi \u0111\u1ed9ng, kh\u00f4ng t\u1ea3i, s\u1ea3n xu\u1ea5t, chuy\u1ec3n \u0111\u1ed5i c\u1ea5p \u0111\u1ed9, b\u1ecf qua v\u00e0 d\u1eebng. Th\u00eam c\u00e1c tr\u01b0\u1eddng c\u00e0i \u0111\u1eb7t \u0111\u0129a m\u00e1y nghi\u1ec1n, l\u01b0u l\u01b0\u1ee3ng th\u1ee7y l\u1ef1c ho\u1eb7c c\u00f4ng th\u1ee9c b\u1ed9t gi\u1ea5y m\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh \u0111\u00e3 tin t\u01b0\u1edfng. T\u00e0i li\u1ec7u v\u1ec1 nghi\u1ec1n c\u1ee7a TAPPI nh\u1ea5n m\u1ea1nh r\u1eb1ng n\u0103ng l\u01b0\u1ee3ng kh\u00f4ng t\u1ea3i v\u00e0 n\u0103ng l\u01b0\u1ee3ng qu\u00e1 tr\u00ecnh n\u00ean \u0111\u01b0\u1ee3c \u0111o l\u01b0\u1eddng xung quanh s\u1ef1 thay \u0111\u1ed5i v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf; logic \u0111\u00f3 c\u0169ng gi\u00fap duy tr\u00ec vi\u1ec7c \u0111\u00e1nh gi\u00e1 h\u00e0i h\u00f2a g\u1eafn li\u1ec1n v\u1edbi m\u1ed9t s\u1ef1 ki\u1ec7n qu\u00e1 tr\u00ecnh th\u1ef1c t\u1ebf.<\/p>\n

Kh\u00f4ng \u0111\u01b0\u1ee3c t\u00e1i s\u1eed d\u1ee5ng t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m n\u0103ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t nghi\u00ean c\u1ee9u t\u00ecnh hu\u1ed1ng l\u00e0m d\u1ef1 b\u00e1o cho m\u1ed9t nh\u00e0 m\u00e1y kh\u00e1c. Gi\u00e1 tr\u1ecb c\u1ee7a nghi\u00ean c\u1ee9u t\u00ecnh hu\u1ed1ng n\u1eb1m \u1edf k\u1ef7 lu\u1eadt \u0111o l\u01b0\u1eddng: so s\u00e1nh c\u00e1c \u0111i\u1ec1u ki\u1ec7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u00e0 ghi l\u1ea1i nh\u1eefng g\u00ec \u0111\u00e3 thay \u0111\u1ed5i.<\/p>\n

\u0110o b\u1ed9 c\u1ea5p tinh ch\u1ebf v\u00e0 thanh g\u00f3p m\u00e1y nghi\u1ec1n<\/h2>\n

T\u1ea1i b\u1ed9 c\u1ea5p li\u1ec7u c\u1ee7a m\u00e1y tinh luy\u1ec7n, thu th\u1eadp d\u00f2ng \u0111i\u1ec7n pha, \u0111i\u1ec7n \u00e1p, ph\u1ed5 s\u00f3ng h\u00e0i, d\u00f2ng \u0111i\u1ec7n nhu c\u1ea7u, h\u1ec7 th\u1ed1ng s\u1ed1 c\u00f4ng su\u1ea5t v\u00e0 nh\u00e3n tr\u1ea1ng th\u00e1i. T\u1ea1i thanh c\u00e1i c\u1ee7a m\u00e1y nghi\u1ec1n ho\u1eb7c PCC, s\u1eed d\u1ee5ng chung m\u1ed9t \u0111\u1ed3ng h\u1ed3 v\u00e0 c\u1eeda s\u1ed5 th\u1eddi gian. M\u1ed9t m\u00e1y tinh luy\u1ec7n l\u1edbn c\u00f3 th\u1ec3 chi\u1ebfm \u01b0u th\u1ebf v\u1ec1 m\u1eb7t \u0111i\u1ec7n n\u0103ng \u1edf tr\u1ea1ng th\u00e1i n\u00e0y v\u00e0 h\u1ea7u nh\u01b0 v\u00f4 h\u00ecnh \u1edf tr\u1ea1ng th\u00e1i kh\u00e1c.<\/p>\n\n\n\n\n\n\n\n\n
Ghi \u00e2m<\/th>\nT\u1ea1i sao \u0111i\u1ec1u \u0111\u00f3 quan tr\u1ecdng<\/th>\nHi\u1ec3u l\u1ea7m ph\u1ed5 bi\u1ebfn<\/th>\n<\/tr>\n<\/thead>\n
D\u1ea3i t\u1ea7n m\u00e1y c\u1ea5p li\u1ec7u tinh luy\u1ec7n<\/td>\nT\u00ecm ch\u1eef k\u00fd \u1ed5 \u0111\u0129a c\u1ee5c b\u1ed9<\/td>\nXem n\u00f3 nh\u01b0 l\u00e0 k\u1ebft qu\u1ea3 PCC<\/td>\n<\/tr>\n
D\u1ea3i ph\u1ed5 thanh c\u00e1i m\u00e1y nghi\u1ec1n \/ PCC<\/td>\nHi\u1ec3n th\u1ecb t\u00e1c \u0111\u1ed9ng ng\u01b0\u1ee3c d\u00f2ng k\u1ebft h\u1ee3p<\/td>\n\u0110\u1ed5 l\u1ed7i cho nh\u00e0 tinh ch\u1ebf m\u00e0 kh\u00f4ng c\u00f3 b\u1eb1ng ch\u1ee9ng t\u1eeb nh\u00e0 cung c\u1ea5p li\u1ec7u<\/td>\n<\/tr>\n
kW v\u00e0 tr\u1ea1ng th\u00e1i qu\u00e1 tr\u00ecnh<\/td>\nK\u1ebft n\u1ed1i d\u1eef li\u1ec7u \u0111i\u1ec7n v\u1edbi s\u1ea3n xu\u1ea5t<\/td>\nXem m\u1ed7i s\u1ef1 thay \u0111\u1ed5i kW l\u00e0 m\u1ed9t s\u1ef1 ki\u1ec7n s\u00f3ng h\u00e0i<\/td>\n<\/tr>\n
Nh\u1eadt k\u00fd v\u01b0\u1ee3t qua v\u00e0 ph\u00e2n lo\u1ea1i<\/td>\nGi\u1ea3i th\u00edch c\u00e1c \u0111i\u1ec3m gi\u00e1n \u0111o\u1ea1n<\/td>\nSo s\u00e1nh c\u00e1c c\u00f4ng th\u1ee9c n\u1ea5u \u0103n kh\u00e1c nhau nh\u01b0 th\u1ec3 ch\u00fang gi\u1ed1ng h\u1ec7t nhau<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

S\u1eed d\u1ee5ng \u0111\u1ed3ng th\u1eddi \u0111i\u1ec1u ki\u1ec7n c\u1ea5u tr\u00fac v\u00e0 ngu\u1ed3n<\/h2>\n

B\u00e0i b\u00e1o thi\u1ebft k\u1ebf c\u1ee7a Federal Pacific so s\u00e1nh c\u00e1c b\u1ed9 kh\u00e1ng \u0111i\u1ec7n \u0111\u01b0\u1eddng d\u00e2y, cu\u1ed9n kh\u00e1ng li\u00ean k\u1ebft DC, c\u00e1c c\u1ea5u h\u00ecnh \u0111a xung v\u00e0 t\u1ea7ng tr\u01b0\u1edbc t\u00edch c\u1ef1c trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n tr\u1edf kh\u00e1ng ngu\u1ed3n, m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p v\u00e0 m\u00e9o d\u1ea1ng n\u1ec1n. Nh\u1eefng \u0111i\u1ec1u ki\u1ec7n \u0111\u00f3 n\u00ean \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u t\u1eeb h\u1ed3 s\u01a1 d\u1ef1 \u00e1n; kh\u00f4ng n\u00ean \u0111o\u00e1n m\u00f2 t\u1eeb nh\u00e3n m\u00e1c c\u1ee7a nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u.<\/p>\n

\"Quy<\/figure>\n

M\u1ed9t tr\u00ecnh t\u1ef1 quy\u1ebft \u0111\u1ecbnh cho \u0111\u1ed9i ng\u0169 nh\u00e0 m\u00e1y<\/h2>\n
    \n
  1. X\u00e1c nh\u1eadn chi\u1ec1u CT, b\u0103ng th\u00f4ng c\u00f4ng t\u01a1 v\u00e0 ranh gi\u1edbi \u0111i\u1ec7n.<\/li>\n
  2. Ghi l\u1ea1i m\u1ed9t chu tr\u00ecnh tinh ch\u1ebf ho\u00e0n ch\u1ec9nh v\u00e0 \u00edt nh\u1ea5t m\u1ed9t l\u1ea7n thay \u0111\u1ed5i m\u00e1c th\u00e9p.<\/li>\n
  3. So s\u00e1nh ph\u1ed5 c\u1ee7a b\u1ed9 c\u1ea5p ngu\u1ed3n v\u00e0 PCC v\u1edbi c\u00f4ng su\u1ea5t quy tr\u00ecnh v\u00e0 tr\u1ea1ng th\u00e1i nh\u00e1nh r\u1ebd.<\/li>\n
  4. Ki\u1ec3m tra xem tri\u1ec7u ch\u1ee9ng l\u00e0 m\u00e9o d\u1ea1ng ph\u00eda ngu\u1ed3n, s\u1ef1 ki\u1ec7n \u0111i\u1ec7n \u00e1p, hay PWM ph\u00eda \u0111\u1ed9ng c\u01a1.<\/li>\n
  5. Ch\u1ec9 r\u00fat g\u1ecdn ph\u01b0\u01a1ng \u00e1n gi\u1ea3m thi\u1ec3u sau khi \u0111\u00e3 ghi nh\u1eadn c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 tr\u1edf kh\u00e1ng ngu\u1ed3n, ph\u00e2n nh\u00f3m, kh\u00f4ng gian v\u00e0 b\u1ea3o tr\u00ec.<\/li>\n<\/ol>\n
    \"\u0110\u1ec1<\/figure>\n

    \u0110\u01b0\u1eddng d\u1eabn AHF ch\u1ec9 sau b\u1eb1ng ch\u1ee9ng t\u1eeb b\u1ed9 tinh ch\u1ebf-c\u1ea5p li\u1ec7u<\/h2>\n

    The \u0110\u01b0\u1eddng d\u1eabn CNBYG AHF\/APF<\/a> c\u00f3 li\u00ean quan khi \u0111\u1ed9 m\u00e9o d\u00f2ng \u0111i\u1ec7n \u0111o \u0111\u01b0\u1ee3c \u1edf ph\u00eda \u0111\u01b0\u1eddng d\u00e2y v\u1eabn l\u00e0 m\u1ed1i quan t\u00e2m c\u1ee7a nh\u00e0 m\u00e1y sau khi ranh gi\u1edbi tuy\u1ebfn c\u1ea5p v\u00e0 c\u1ea5u tr\u00fac bi\u1ebfn t\u1ea7n \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh. H\u00e3y y\u00eau c\u1ea7u b\u1ea3ng d\u1eef li\u1ec7u m\u00f4 h\u00ecnh, s\u01a1 \u0111\u1ed3 \u0111\u1ea5u d\u00e2y CT, gi\u1edbi h\u1ea1n qu\u00e1 t\u1ea3i\/nhi\u1ec7t, h\u00e0nh vi c\u1ee7a m\u1ea1ch r\u1ebd (bypass) v\u00e0 ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec7m thu. B\u00e0i vi\u1ebft n\u00e0y kh\u00f4ng kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng CNBYG h\u1ed7 tr\u1ee3 m\u1ed9t lo\u1ea1i m\u00e1y l\u1ecdc d\u1ea7u c\u1ee5 th\u1ec3 hay m\u1ed9t b\u1ed9 l\u1ecdc ngu\u1ed3n t\u00edch c\u1ef1c (APF) th\u00f4ng th\u01b0\u1eddng s\u1ebd \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau c\u1ee7a d\u1ef1 \u00e1n.<\/p>\n

    \u0110\u1ec3 bi\u1ebft ng\u1eef c\u1ea3nh c\u1ee7a c\u1ee5m, h\u00e3y xem Tr\u1ee5 c\u1ed9t H\u1ec7 th\u1ed1ng Ch\u1ea5t l\u01b0\u1ee3ng \u0110i\u1ec7n<\/a>, b\u00e0i vi\u1ebft l\u1ef1a ch\u1ecdn bi\u1ebfn t\u1ea7n c\u00f4ng nghi\u1ec7p v\u00e0 b\u1ed9 l\u1ecdc s\u00f3ng h\u00e0i ch\u1ee7 \u0111\u1ed9ng<\/a> v\u00e0 c\u1ea9m nang \u0111o l\u01b0\u1eddng ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec7n n\u0103ng<\/a>.<\/p>\n

    T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n