thi\u1ebft k\u1ebf<\/a> d\u00f9ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n t\u1ed1c \u0111\u1ed9 c\u01a1 xoay chi\u1ec1u AC.<\/p>\n\n\n\nBi\u1ebfn t\u1ea7n DC: Ki\u1ec3m so\u00e1t s\u1ef1 r\u1ebd nh\u00e1nh c\u1ee7a \u0111\u1ed9ng c\u01a1 d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u.<\/p>\n\n\n\n
Ngo\u00e0i ra, bi\u1ebfn t\u1ea7n c\u00f2n \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo c\u00f4ng su\u1ea5t \u0111\u00e1p \u1ee9ng cho t\u1ea3i nh\u01b0 inverter, 1 pha, 3 pha,\u2026<\/p>\n\n\n\n
T\u00ecm hi\u1ec3u c\u1ea5u t\u1ea1o bi\u1ebfn t\u1ea7n<\/p>\n\n\n\n
Bi\u1ebfn t\u1ea7n \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o t\u1eeb nhi\u1ec1u b\u1ed9 ph\u1eadn nh\u01b0ng ch\u00fang \u0111\u1ec1u c\u00f3 chung ch\u1ee9c n\u0103ng nh\u1eadn ngu\u1ed3n \u0111i\u1ec7n c\u00f3 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o v\u1edbi t\u1ea7n s\u1ed1 c\u1ed1 \u0111\u1ecbnh. T\u1eeb \u0111\u00f3, bi\u1ebfn \u0111\u1ed5i th\u00e0nh ngu\u1ed3n \u0111i\u1ec7n c\u00f3 \u0111i\u1ec7n \u00e1p v\u00e0 t\u1ea7n s\u1ed1 bi\u1ebfn thi\u00ean 3 pha \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n t\u1ed1c \u0111\u1ed9 \u0111\u1ed9ng c\u01a1.<\/p>\n\n\n\n
M\u1ed9t trong s\u1ed1 nh\u1eefng b\u1ed9 ph\u1eadn ch\u00ednh c\u1ee7a bi\u1ebfn t\u1ea7n \u0111\u00f3 l\u00e0: m\u1ea1ch ch\u1ec9nh l\u01b0u, m\u1ea1ch ngh\u1ecbch l\u01b0u, ph\u1ea7n \u0111i\u1ec1u khi\u1ec3n v\u00e0 m\u1ea1ch m\u1ed9t chi\u1ec1u trung gian (DC link).<\/p>\n\n\n\n
B\u1ed9 ch\u1ec9nh l\u01b0u: C\u00f2n c\u00f3 t\u00ean g\u1ecdi kh\u00e1c l\u00e0 diode. \u0110\u00e2y l\u00e0 linh ki\u1ec7n t\u01b0\u01a1ng t\u1ef1 v\u1edbi c\u00e1c b\u1ed9 ch\u1ec9nh l\u01b0u th\u01b0\u1eddng th\u1ea5y trong b\u1ed9 ngu\u1ed3n, trong \u0111\u00f3, \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh m\u1ed9t chi\u1ec1u. \u0110i\u1ec7n \u00e1p sau khi ch\u1ec9nh l\u01b0u qua gi\u00e0n t\u1ee5 l\u1ecdc \u0111\u1ec3 c\u00f3 \u0111i\u1ec7n \u00e1p ph\u1eb3ng, \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 cung c\u1ea5p ngu\u1ed3n cho IGBT<\/p>\n\n\n\n
Tuy\u1ebfn d\u1eabn m\u1ed9t chi\u1ec1u: L\u00e0 m\u1ed9t gi\u00e0n t\u1ee5 \u0111i\u1ec7n l\u01b0u tr\u1eef \u0111i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ec9nh l\u01b0u. M\u1ed9t t\u1ee5 \u0111i\u1ec7n c\u00f3 th\u1ec3 tr\u1eef \u0111\u01b0\u1ee3c m\u1ed9t \u0111i\u1ec7n t\u00edch l\u1edbn, nh\u01b0ng s\u1eafp x\u1ebfp theo c\u1ea5u h\u00ecnh tuy\u1ebfn d\u1eabn m\u1ed9t chi\u1ec1u \u0111\u1ec3 l\u00e0m t\u0103ng \u0111i\u1ec7n dung. \u0110i\u1ec7n \u00e1p \u0111\u00e3 l\u01b0u tr\u1eef s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho giai \u0111o\u1ea1n ti\u1ebfp theo khi IGBT t\u1ea1o ra \u0111i\u1ec7n n\u0103ng cho \u0111\u1ed9ng c\u01a1.<\/p>\n\n\n\n
IGBT: Thi\u1ebft b\u1ecb IGBT gi\u00fap chuy\u1ec3n m\u1ea1ch nhanh v\u00e0 cho hi\u1ec7u xu\u1ea5t cao. Trong bi\u1ebfn t\u1ea7n, IGBT \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n k\u00edch m\u1edf theo tr\u00ecnh t\u1ef1, t\u1ea1o xung v\u1edbi c\u00e1c \u0111\u1ed9 r\u1ed9ng kh\u00e1c nhau t\u1eeb \u0111i\u1ec7n \u00e1p DC Bus \u0111\u01b0\u1ee3c l\u01b0u trong t\u1ee5 \u0111i\u1ec7n.<\/p>\n\n\n\n
B\u1ed9 kh\u00e1ng \u0111i\u1ec7n xoay chi\u1ec1u: B\u1ed9 \u0111i\u1ec7n kh\u00e1ng d\u00f2ng xoay chi\u1ec1u ch\u00ednh l\u00e0 cu\u1ed9n c\u1ea3m ho\u1eb7c cu\u1ed9n d\u00e2y. Cu\u1ed9n c\u1ea3m l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng trong t\u1eeb tr\u01b0\u1eddng s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o ra trong cu\u1ed9n d\u00e2y v\u00e0 ch\u1ed1ng thay \u0111\u1ed5i d\u00f2ng \u0111i\u1ec7n.<\/p>\n\n\n\n
B\u1ed9 \u0111i\u1ec7n kh\u00e1ng m\u1ed9t chi\u1ec1u: B\u1ed9 \u0111i\u1ec7n kh\u00e1ng m\u1ed9t chi\u1ec1u \u0111\u01b0\u1ee3c gi\u1edbi h\u1ea1n b\u1edfi t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i d\u00f2ng t\u1ee9c th\u1eddi tr\u00ean tuy\u1ebfn d\u1eabn m\u1ed9t chi\u1ec1u. Vi\u1ec7c gi\u1ea3m t\u1ed1c \u0111\u1ed9 n\u00e0y s\u1ebd cho ph\u00e9p b\u1ed9 truy\u1ec1n \u0111\u1ed9ng ph\u00e1t hi\u1ec7n c\u00e1c s\u1ef1 c\u1ed1 ti\u1ec1m \u1ea9n tr\u01b0\u1edbc khi x\u1ea3y ra h\u1ecfng h\u00f3c.<\/p>\n\n\n\n
\u0110i\u1ec7n tr\u1edf h\u00e3m: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u201c\u0111\u1ed1t ch\u00e1y h\u1ebft\u201d l\u01b0\u1ee3ng \u0111i\u1ec7n d\u01b0 th\u1eeba b\u1eb1ng c\u00e1ch bi\u1ebfn l\u01b0\u1ee3ng \u0111i\u1ec7n th\u1eeba th\u00e0nh nhi\u1ec7t.<\/p>\n\n\n\n
Nguy\u00ean l\u00fd l\u00e0m vi\u1ec7c c\u1ee7a m\u00e1y bi\u1ebfn t\u1ea7n<\/p>\n\n\n\n
Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a bi\u1ebfn t\u1ea7n v\u00f4 c\u00f9ng \u0111\u01a1n gi\u1ea3n. \u0110\u1ea7u ti\u00ean, ngu\u1ed3n \u0111i\u1ec7n xoay chi\u1ec1u 1 pha ho\u1eb7c 3 pha s\u1ebd \u0111\u01b0\u1ee3c ch\u1ec9nh l\u01b0u v\u00e0 l\u1ecdc th\u00e0nh ngu\u1ed3n 1 chi\u1ec1u b\u1eb1ng ph\u1eb3ng. C\u00f4ng vi\u1ec7c 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 l\u00e0 0.96.<\/p>\n\n\n\n
\u0110i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u s\u1ebd \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 vi\u1ec7c n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua h\u1ec7 IGBT b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u ch\u1ec9nh ch\u1ebf \u0111\u1ed9 r\u1ed9ng xung. Nh\u1edd ph\u00e1t tri\u1ec3n 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 t\u1ed5n th\u1ea5t tr\u00ean l\u00f5i s\u1eaft \u0111\u1ed9ng c\u01a1.<\/p>\n\n\n\n
H\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u 3 pha \u1edf \u0111\u1ea7u ra c\u00f3 th\u1ec3 s\u1ebd thay \u0111\u1ed5i gi\u00e1 tr\u1ecb bi\u00ean \u0111\u1ed9 v\u00e0 t\u1ea7n s\u1ed1 v\u00f4 c\u1ea5p t\u00f9y 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 t\u00f9y thu\u1ed9c v\u00e0o ch\u1ebf \u0111\u1ed9 \u0111i\u1ec1u khi\u1ec3n. \u0110\u1ed1i v\u1edbi t\u1ea3i c\u00f3 momen kh\u00f4ng \u0111\u1ed5i, t\u1ec9 s\u1ed1 \u0111i\u1ec7n \u00e1p- t\u1ea7n s\u1ed1 s\u1ebd l\u00e0 kh\u00f4ng \u0111\u1ed5i. Tuy v\u1eady, v\u1edbi t\u1ea3i b\u01a1m v\u00e0 qu\u1ea1t, quy lu\u1eadt n\u00e0y s\u1ebd l\u00e0 h\u00e0m b\u1eadc 4. \u0110i\u1ec7n \u00e1p l\u00e0 h\u00e0m b\u1eadc 4 c\u1ee7a t\u1ea7n s\u1ed1, t\u1ea1o ra \u0111\u1eb7c t\u00ednh m\u00f4 men l\u00e0 h\u00e0m b\u1eadc 2 c\u1ee7a t\u1ed1c \u0111\u1ed9 ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u c\u1ee7a t\u1ea3i qu\u1ea1t\/b\u01a1m do b\u1ea3n th\u00e2n m\u00f4 men c\u0169ng l\u00e0 h\u00e0m b\u1eadc hai c\u1ee7a \u0111i\u1ec7n \u00e1p.<\/p>\n\n\n\n
Ngo\u00e0i ra, bi\u1ebfn t\u1ea7n ng\u00e0y nay \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p nhi\u1ec1u ki\u1ec3u \u0111i\u1ec1u khi\u1ec3n kh\u00e1c nhau, ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u lo\u1ea1i ph\u1ee5 t\u1ea3i kh\u00e1c nhau. \u0110a s\u1ed1, c\u00e1c bi\u1ebfn t\u1ea7n hi\u1ec7n nay \u0111\u1ec1u \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p b\u1ed9 PID, ph\u00f9 h\u1ee3p cho vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n v\u00e0 gi\u00e1m s\u00e1t trong h\u1ec7 th\u1ed1ng SCADA.<\/p>\n\n\n\n
\u01afu \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a bi\u1ebfn t\u1ea7n<\/p>\n\n\n\n
Bi\u1ebfn t\u1ea7n c\u00f3 th\u1ec3 \u0111i\u1ec1u khi\u1ec3n v\u00f4 c\u1ea5p t\u1ed1c \u0111\u1ed9 c\u1ee7a \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n.<\/p>\n\n\n\n
Hi\u1ec7u su\u1ea5t l\u00e0m vi\u1ec7c c\u1ee7a bi\u1ebfn t\u1ea7n th\u01b0\u1eddng s\u1ebd cao h\u01a1n 98%.<\/p>\n\n\n\n
H\u1ec7 th\u1ed1ng \u0111i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 \u0111\u1ed9ng c\u01a1 b\u1eb1ng bi\u1ebfn t\u1ea7n v\u00f4 c\u00f9ng \u0111\u01a1n gi\u1ea3n, l\u00e0m vi\u1ec7c trong nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau, \u0111\u00e1p \u1ee9ng nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau v\u00e0 c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u1ed1c \u0111\u1ed9 l\u00e0m vi\u1ec7c nhi\u1ec1u \u0111\u1ed9ng c\u01a1 c\u00f9ng m\u1ed9t l\u00fac nh\u01b0 b\u0103ng t\u1ea3i, m\u00e1y k\u00e9o s\u1ee3i trong ng\u00e0nh d\u1ec7t,\u2026<\/p>\n\n\n\n
T\u0103ng t\u1ed1c \u00eam, ch\u1ed1ng gi\u1eadt gi\u00fap gi\u1ea3m \u00e1p l\u1ef1c l\u00ean h\u1ec7 th\u1ed1ng c\u01a1 kh\u00ed nh\u01b0 \u1ed5 bi, h\u1ed9p s\u1ed1,\u2026<\/p>\n\n\n\n
Bi\u1ebfn t\u1ea7n c\u00f3 ch\u1ebf \u0111\u1ed9 kh\u1edfi \u0111\u1ed9ng v\u1edbi m\u00f4 men c\u1ef1c \u0111\u1ea1i, \u0111\u01b0\u1ee3c d\u00f9ng cho b\u0103ng t\u1ea3i, ph\u00e1t hi\u1ec7n \u0111\u1ee9t d\u00e2y \u0111ai nh\u1edd vi\u1ec7c gi\u00e1m s\u00e1t m\u00f4 men t\u1ea3i.<\/p>\n\n\n\n
Ti\u1ebft ki\u1ec7m \u0111i\u1ec7n n\u0103ng l\u00ean \u0111\u1ebfn 60% cho qu\u00e1 tr\u00ecnh kh\u1edfi \u0111\u1ed9ng v\u00e0 v\u1eadn h\u00e0nh.<\/p>\n\n\n\n
D\u1ec5 d\u00e0ng k\u1ebft n\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng.<\/p>\n\n\n\n
\u0110\u01b0\u1ee3c t\u00edch h\u1ee3p \u0111\u1ea7y \u0111\u1ee7 c\u00e1c ch\u1ee9c n\u0103ng nh\u01b0 b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i, qu\u00e1 nhi\u1ec7t, qu\u00e1 \u00e1p hay th\u1ea5p \u00e1p, l\u1ed7i m\u1ea5t pha,\u2026<\/p>\n\n\n\n
\u0110\u1ea3m b\u1ea3o an to\u00e0n, ti\u1ec7n l\u1ee3i; ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec, b\u1ea3o d\u01b0\u1ee1ng th\u01b0\u1eddng xuy\u00ean.<\/p>\n\n\n\n
\u1ee8ng d\u1ee5ng c\u1ee7a bi\u1ebfn t\u1ea7n v\u00f4 c\u00f9ng \u0111a d\u1ea1ng v\u00ed d\u1ee5 nh\u01b0 m\u00e1y n\u00e9n kh\u00ed, b\u0103ng t\u1ea3i, m\u00e1y c\u00e1n k\u00e9o, h\u1ec7 th\u1ed1ng HVAC, m\u00e1y tr\u1ed9n,\u2026<\/p>\n\n\n\n
\u0110\u1ec3 t\u0103ng \u0111\u1ed9 b\u1ec1n c\u0169ng nh\u01b0 gi\u00fap thi\u1ebft b\u1ecb v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh, trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng ng\u01b0\u1eddi d\u00f9ng c\u1ea7n l\u01b0u \u00fd m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 sau:<\/p>\n\n\n\n
L\u1ef1a ch\u1ecdn b\u1ed9 bi\u1ebfn t\u1ea7n ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u s\u1eed d\u1ee5ng.<\/p>\n\n\n\n
L\u1eafp \u0111\u1eb7t \u1edf n\u01a1i kh\u00f4 r\u00e1o, tho\u00e1ng m\u00e1t, b\u1eb1ng ph\u1eb3ng.<\/p>\n\n\n\n
\u0110\u1ea3m b\u1ea3o b\u1ed9 bi\u1ebfn t\u1ea7n \u0111\u00e3 \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1edbi h\u00f3a \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft t\u1ea1i Vi\u1ec7t Nam.<\/p>\n\n\n\n
\u0110\u1ecdc k\u1ef9 c\u00e1c h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng.<\/p>\n\n\n\n
Khi bi\u1ebfn t\u1ea7n b\u00e1o l\u1ed7i b\u1ea1n c\u1ea7n ph\u1ea3i ng\u1eaft k\u1ebft n\u1ed1i v\u1edbi ngu\u1ed3n \u0111i\u1ec7n, ki\u1ec3m tra v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 h\u1ecfng h\u00f3c.<\/p>\n\n\n\n
Kh\u00f4ng t\u1ef1 \u00fd th\u00eam\/b\u1edbt linh ki\u1ec7n n\u1ebfu kh\u00f4ng c\u00f3 s\u1ef1 cho ph\u00e9p c\u1ee7a k\u1ef9 thu\u1eadt vi\u00ean.<\/p>\n\n\n\n
V\u1ec7 sinh, b\u1ea3o d\u01b0\u1ee1ng thi\u1ebft b\u1ecb th\u01b0\u1eddng xuy\u00ean theo khuy\u1ebfn c\u00e1o c\u1ee7a \u0111\u01a1n v\u1ecb s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n
Vi\u1ec7c l\u1eafp \u0111\u1eb7t, b\u1ea3o tr\u00ec bi\u1ebfn t\u1ea7n inverter \u0111\u00f2i h\u1ecfi ng\u01b0\u1eddi c\u00f3 kinh nghi\u1ec7m v\u00e0 chuy\u00ean m\u00f4n th\u1ef1c hi\u1ec7n, b\u1ea1n kh\u00f4ng n\u00ean t\u1ef1 \u00fd th\u1ef1c hi\u1ec7n n\u1ebfu kh\u00f4ng mu\u1ed1n tr\u1ea3 gi\u00e1 b\u1eb1ng nhi\u1ec1u ti\u1ec1n b\u1ea1c.<\/p>\n\n\n\n
\u0110\u1ec3 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng r\u00f2 r\u1ec9 \u0111i\u1ec7n khi l\u1eafp \u0111\u1eb7t b\u1ea1n n\u00ean n\u1ed1i ti\u1ebfp \u0111\u1ea5t cho bi\u1ebfn t\u1ea7n.<\/p>\n\n\n\n
Hy v\u1ecdng r\u1eb1ng nh\u1eefng th\u00f4ng tin tr\u00ean \u0111\u00e2y v\u1ec1 bi\u1ebfn t\u1ea7n l\u00e0 g\u00ec? C\u1ea5u t\u1ea1o, nguy\u00ean l\u00fd l\u00e0m vi\u1ec7c v\u00e0 \u1ee9ng d\u1ee5ng s\u1ebd gi\u00fap b\u1ea1n c\u00f3 nhi\u1ec1u ki\u1ebfn th\u1ee9c h\u1eefu \u00edch. N\u1ebfu c\u00f3 c\u00e2u h\u1ecfi n\u00e0o c\u1ea7n \u0111\u01b0\u1ee3c gi\u1ea3i \u0111\u00e1p h\u00e3y comment ph\u00eda d\u01b0\u1edbi, ch\u00fang t\u00f4i s\u1ebd gi\u1ea3i \u0111\u00e1p b\u1ea1n nhanh ch\u00f3ng v\u00e0 mi\u1ec5n ph\u00ed ho\u00e0n to\u00e0n.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Bi\u1ebfn t\u1ea7n l\u00e0 m\u1ed9t trong nh\u1eefng thi\u1ebft b\u1ecb h\u1eefu \u00edch gi\u00fap cho c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 m\u00e1y n\u00e9n kh\u00ed, m\u00e1y c\u00e1n k\u00e9o, m\u00e1y b\u01a1m n\u01b0\u1edbc,\u2026v\u1eadn h\u00e0nh hi\u1ec7u qu\u1ea3 v\u00e0 \u1ed5n \u0111\u1ecbnh. V\u1eady, bi\u1ebfn t\u1ea7n l\u00e0 g\u00ec? C\u1ea5u t\u1ea1o v\u00e0 nguy\u00ean l\u00fd l\u00e0m vi\u1ec7c? T\u1ea5t c\u1ea3 s\u1ebd \u0111\u01b0\u1ee3c Vietlearn.org gi\u1ea3i […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[7],"tags":[],"class_list":["post-3432","post","type-post","status-publish","format-standard","hentry","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/3432","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=3432"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/3432\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=3432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=3432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=3432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}