한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2004년도 춘계학술대회 논문집
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- Pages.1334-1339
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- 2004
멀티레벨 인버터를 이용한 전기철도용 하이브리드 능동전력필터
A Hybrid Active Power Filter for Electric-Railway Systems using Multi-Level Inverters
- 발행 : 2004.06.01
초록
This paper proposes transformerless power conversion system consisting of a single-phase diode rectifier and a shunt hybrid filter for the electric-railway system. The hybrid filter consists of a single tuned LC filter per a phase and a low-rated NPC type multi-level inverter. Compared with conventional active filters. Transformers are not used. Also, LC filter works as not only a harmonic filter tuned at the 5th harmonic frequency but also a switching-ripple filter. The rating of the active filter can be decreased by using a NPC type multi-level inverter. The simulation results confirm the validity of the system.
키워드