전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2003년도 춘계전력전자학술대회 논문집(1)
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- Pages.5-9
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- 2003
Space vector modulation을 이용한 대용량 멀티 레벨 H-bridge 인버터의 해석 및 모델링
Analysis and modelling of the large capacity multilevel H-bridge inverter using Space vector modulation
- Kim H.J. (Kwangwoon University) ;
- Jeong S.G. (Kwangwoon University)
- 발행 : 2003.07.01
초록
Conventional variable-speed Induction motor drives with inverters are subject to detrimental effect of zero-sequence voltages, such a shaft voltage and bearing current. This paper presents a way of the suppression of the zero-sequence components in multilevel H-bridge inverters. First examined Is the inherent zero-sequence characteristic of the conventional subharmonic PW method. Then it is shown that the zero-sequence voltage can be eliminated with proper -selection of switching states with space vector modulation. Although this method alone restricts the linear modulation range of control, a combination of the proposed method and the minimum switching method appears to be effective in suppressing the zero-sequence voltage to minimum level while maintaining the linear control range.
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