Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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A Study on PFC Buck-Boost AC-DC Converter by Soft Switching Method

소프트 스위칭형 PFC 승강압 AC-DC 컨버터에 관한 연구

  • Kwak, Dong-Kurl (Professional Graduate School of Disasters Prevention Technology, Kangwon University) ;
  • Lee, Seung-Ho (Professional Graduate School of Disasters Prevention Technology, Kangwon University) ;
  • Lee, Bong-Seob (Division of Electrical and Control Engineering, Kangwon University) ;
  • Jung, Do-Young (Division of Electrical and Control Engineering, Kangwon University) ;
  • Shim, Jae-Sun (Division of Electrical and Control Engineering, Kangwon University) ;
  • Im, Jin-Geun (Semyeong eng.Co)
  • 곽동걸 (강원대학교 방재기술전문대학원) ;
  • 이승호 (강원대학교 방재기술전문대학원) ;
  • 이봉섭 (강원대학교 전기제어공학부) ;
  • 정도영 (강원대학교 전기제어공학부) ;
  • 심재선 (강원대학교 전기제어공학부) ;
  • 임진근 ((주)세명엔지니어링)
  • Published : 2007.07.02
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Abstract

Authors propose a PFC(power factor correction) Buck-Boost AC-DC converter by soft switching method. The proposed converter for a discontinuous conduction mode eliminates the complicated control requirement and reduces the size of components. The input current waveform in the converter is got to be a sinusoidal form of discontinuous pulse in proportion to magnitude of ac input voltage under the constant duty cycle switching.Therefore,the input power factor is nearly unity and the control algorithm is simple. To achieve high efficiency system, the proposed converter is constructed by using a partial resonant technique. The control switches using in the converter are operated with soft switching for a partial resonant. The control switches are operated without increasing their voltage and current stresses by the soft switching method. The result is that the switching loss is very low and the efficiency of converter is high.

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