대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1989년도 하계종합학술대회 논문집
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- Pages.535-539
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- 1989
고주파 비대칭 PWM 3상 교류초퍼
HIGH-FREQUENCY APWM THREE-PHASE AC CHOPPER
- Kim, Han-Sang (KON-KUK UNIVERSITY) ;
-
Choe, Gyu-Ha
(KON-KUK UNIVERSITY)
;
- Kim, Yong-Ju (KON-KUK UNIVERSITY) ;
- Lee, Keun-Ha (KON-KUK UNIVERSITY) ;
- Baek, Hyung-Lae (CHO-SUN UNIVERSITY)
- 발행 : 1989.07.21
초록
A high-frequency asymmetrical PWM control technique is proposed which can improve the input power factor of ac chopper and also suppress its harmonic contents of currents at both its input and load sides and the acoustic noises by its switching semiconductor devices. The ideal switching function for the proposed technique is derived and hence converted into asymmetrical PWM pattern for practical implementation of ac voltage regulator. Also the various power circuits of three phase AC choppers are suggested. The theoretical characteristics of the proposed PWM technique are investigated by digital simulation.
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