Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Efficiency Improvement of Boost Converter for Power Factor Correction

PFC용 부스트 컨버터의 효율 개선에 관한 연구

  • Jeon, Nae-Suck (Dept. of Electrical Engineering, Korea Maritime University) ;
  • Jeon, Su-Kyun (Dept. of Electrical Engineering, Korea Maritime University) ;
  • Lee, Sung-Geun (Dept. of Electrical Engineering, Korea Maritime University) ;
  • Kil, Guyng-Suk (Dept. of Electrical Engineering, Korea Maritime University) ;
  • Kim, Yoon-Sik (Dept. of Electrical Engineering, Korea Maritime University)
  • 전내석 (한국해양대학교 전기공학과) ;
  • 전수균 (한국해양대학교 전기공학과) ;
  • 이성근 (한국해양대학교 전기공학과) ;
  • 길경석 (한국해양대학교 전기공학과) ;
  • 김윤식 (한국해양대학교 전기공학과)
  • Published : 2002.07.10
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Abstract

A new technique for improving the efficiency of single-phase high-frequency boost converter is proposed. This converter includes an additional low-frequency boost converter which is connected to the main high-frequency switching device in parallel. The additional converter is controlled at lower frequency. Most of the current flows in the low-frequency switch and so, high-frequency switching loss is greatly reduced accordingly. Both switching device are controlled by a simple method; each controller consists of a comparator, a frequency generator and an error amplifier. The converter works cooperatively in high efficiency and acts as if it were a conventional high-frequency boost converter with one switching device, The proposed method is verified by simulation and experiment. This paper describes the converter configuration and design, and discusses the steady-state performance concerning the switching loss reduction and efficiency improvement.

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