Proceedings of the Korean Society of Marine Engineers Conference (한국마린엔지니어링학회:학술대회논문집)

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Analysis and simulation of Cascaded H-bridge 7 level inverter for eliminating typical harmonic waveforms

특정 고조파 제거를 위한 Cascaded H-bridge 7레벨 인버터의 특성해석 및 시뮬레이션

  • 진선호 (한국해양대학교 대학원 기관시스템공학과) ;
  • 오진석 (한국해양대학교 대학원 기관시스템공학과) ;
  • 조관준 (한국해양대학교 대학원 메카트로닉스공학과) ;
  • 곽준호 (한국해양대학교 대학원 메카트로닉스공학과) ;
  • 임명규 (한국해양대학교 대학원 메카트로닉스공학과) ;
  • 김장목 (부산대학교 전자전기정보컴퓨터공학부)
  • Published : 2005.06.26
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Abstract

This paper is presented the analysis results and simulation results of cascaded H-bridge 7 level inverter with various modulation index. Stepped waveform having number of switching was used to eliminate harmonic components. Switching angles according to modulation index are calculated numerically. Therefore, 3 times of switching with 7 level topology and QWS(Quarter Wave Symmetry) could eliminate 5th and 7th harmonics. The harmonic characteristics are compared to those of space vector modulation method which known as common modulation method in industrial field. Stepped waveform method showed higher ability to reduce, especially lower order of harmonics.

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