Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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A Novel Method of the Harmonic Analysis by Using the Multi-Carrier PWM Techniques in the Multi-Level Inverter

멀티 레벨 인버터에서 멀티 캐리어 PWM 방법을 사용한 고조파 분석의 새로운 방법

  • Kim June-Sung (Dept. of Electrical Engineering, Hanyang Univ.) ;
  • Kim Tae-Jin (Dept. of Electrical Engineering, Hanyang Univ.) ;
  • Kang Dae-Wook (Dept. of Electrical Engineering, Hanyang Univ.) ;
  • Hyun Dong-Seok (Dept. of Electrical Engineering, Hanyang Univ.)
  • 김준성 (한양대학교 전력전자 연구실) ;
  • 김태진 (한양대학교 전력전자 연구실) ;
  • 강대욱 (한양대학교 전력전자 연구실) ;
  • 현동석 (한양대학교 전력전자 연구실)
  • Published : 2002.11.01
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Abstract

This paper deals with a novel method in order to analyze the harmonic characteristics in the multi-level inverter. Generally, the magnitude of harmonic components is different according to the carrier PWM techniques, modulation Index(Mi), and the level of multi-level inverter The previous papers analyzed the harmonic characteristics from the viewpoint of the space vector. Hence, the calculation of the harmonic vector becomes difficult and complex in 4-level or more than S-level. However, the proposed method of this paper reduced an amount of calculation and simplified the process of calculation by using the relationship between reference voltage and output phase voltage to load neutral. This paper analyzed the harmonic and it is applied to the multi-carrier PWM techniques in 5- level and other-level of cascaded inverter system.

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