대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2007년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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- Pages.194-197
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- 2007
NPC형 3레벨 인버터 과변조영역운전
NPC Type 3 Level Inverter Operation in Overmodulation Region
- Lee, Jae-Moon (School of Electrical and Computer Engineering Chungbuk National University) ;
- Choi, Jae-Ho (School of Electrical and Computer Engineering Chungbuk National University) ;
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Lee, Eun-Kyu
(Woojin Industrial System) ;
- Yeom, Sang-Gu (Woojin Industrial System)
- 발행 : 2007.04.19
초록
This paper proposes a linearization technique for the 3 level NPC type inverter, which increases the linear control range of inverter up to the 6-step inverter. The overmodulation range is divided into two modes depending on the modulation index(MI), In mode I, the reference angles are derived from the Fourier series expansion of the reference voltage corresponds to the MI. In mode II, the holding angles are also derived in the same way. Therefore, it is possible to obtain the linear control and the maximized utilization of PWM inverter output voltage.
키워드