대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2000년도 하계학술대회 논문집 B
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- Pages.1267-1269
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- 2000
교류초퍼에서 새로운 스위칭 신호패턴
New Switching signal Pattern in AC Chopper
- Jang, Do-Hyun (Dept. of Electrical Engineering, Hoseo University) ;
- Yeon, Jae-Eul (Dept. of Electrical Engineering, Hoseo University)
- 발행 : 2000.07.17
초록
New switching signal pattern for four switches is proposed to prevent the shortage of PWM ac choppers. In the proposed technique, four signals to four power switches are generated without current transformer, while the conventional technique requires sensing the polarity of input voltage by voltage comparator and checking the direction of input current by the current transformer. The signal circuit built by the proposed technique is simple, and reduces also the switching loss.
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