Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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Magnetic Coupled ZVT PWM Boost PFC Pre-regulator

에너지 회생 변압기를 사용한 영전압 과도상태(ZVT) 부스트 역률보상 회로

  • Yang Joon-Hyun (Power Electronics System Laboratory The School of Electrical Engineering Seoul National University) ;
  • Lee Dong-Young (Power Electronics System Laboratory The School of Electrical Engineering Seoul National University) ;
  • Cho Bo-Hyung (Power Electronics System Laboratory The School of Electrical Engineering Seoul National University)
  • 양준현 (서울대학교 전기공학부) ;
  • 이동영 (서울대학교 전기공학부) ;
  • 조보형 (서울대학교 전기공학부)
  • Published : 2001.07.01
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Abstract

A zero-voltage transition (ZVT) PWM boost PFC converter using a transformer to recover the resonant energy into the input voltage is proposed. The proposed converter reduces turn-off switching loss of the auxiliary switch. The resonant current of the auxiliary circuit is optimally reduced by the feed-forwarded input voltage. Moreover, the resonant energy of the auxiliary circuit is recovered into the load and input voltages. In this paper, the modes of converter operation are explained and analyzed, design guidelines are given, and experimental results of 1.2kW, 200kHz prototype system are presented.

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