Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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Capacitance reduction method for single-phase PWM converters using the 3rd harmonic injection and PR controller.

3차 고조파 주입과 PR 제어기를 이용한 단상 PWM 컨버터의 커패시터 용량 저감 기법

  • Kim, Gyu-Dong (School of Electronic and Electrical Engineering, Hongik University) ;
  • Yang, Hyun-Suk (School of Electronic and Electrical Engineering, Hongik University) ;
  • Lee, Dong-Myung (School of Electronic and Electrical Engineering, Hongik University)
  • 김규동 (홍익대학교 전자전기공학부) ;
  • 양현석 (홍익대학교 전자전기공학부) ;
  • 이동명 (홍익대학교 전자전기공학부)
  • Published : 2013.07.02
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Abstract

In this paper, we inject input currents having $3^{rd}$ harmonic to reduce the capacitance of DC link capacitors in single-phase converters. If the input current with third harmonic is injected, the required capacitance can be reduced by minimizing the difference between the input and output power. To control the input current, instead of PI control done in rotating frame, PR controller is used with the proposed separate current control method for fundamental and $3^{rd}$ harmonic components. The validity of the proposed method has been demonstrated by simulation results.

Keywords