The Transactions of the Korean Institute of Electrical Engineers B (대한전기학회논문지:전기기기및에너지변환시스템부문B)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Snubber Circuit for Flying Capacitor Multilevel Inverter and Converter

플라잉 커패시터 멀티레벨 인버터 및 컨버터를 위한 스너버 회로

  • 이민수 (현대중공업(주) 연구원) ;
  • 성현제 (동아일렉콤 연구원) ;
  • 김인동 (부경대 전기제어계측공학과) ;
  • 노의철 (부경대 전기제어계측공학과) ;
  • 조철제 (부경대 전기제어계측공학과)
  • Published : 2001.09.01
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Abstract

This paper proposes a snubber circuit for flying capacitor multilevel inverter and converter. The proposed snubber circuit makes use of Undeland snubber as basic snubber unit. It has such an advantage of Undeland snubber used in the two-level inverter. Compared with conventional RCD/RLD snubber for multileve1 inverter and converter, the proposed snubber keeps such good features as fewer number of components, reduction of voltage stress of main switching devices due to low overvoltage, and improved efficiency of system due to low loss snubber. In this paper, the proposed snubber is applied to three-level flying capacitor inverter and this feature is demonstrated by computer simulation and experimental result.

Keywords

References

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