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방효진(Hyo-Jin Bang),김용기(Yong-Ki Kim),장수진(Su-Jin Jang),송상훈(Sang-Hun Song),안규복(Yu-Bok Ahn),원충연(Chung-Yuen Won) 한국조명·전기설비학회 2004 한국조명·전기설비학회 학술대회논문집 Vol.2004 No.5월
Recently, when electric traction system used DC 1500[Vdc] runs on decline of rail road track and slows down, dc voltage goes beyond regular voltage. In this case extra power is forcibly wasted by resister because rectifier of substation and electric train including power convertor and so on are out of order. Therefore this paper proposes that the extra power is regenerated through regeneration inverter to AC utility in result this system obstruct to go beyond regular voltage and improve the efficiency. In addition, electric traction system products harmonic current and voltage distortion and reactive power because power converter is used so regeneration inverter normally runs such as active power filter(APF) for improving power quality.
방효진(Hyo-Jin Bang),장수진(Su-jin Jang),송상훈(Sang-Hun Song),원충연(Chung-Yuen Won),김용기(Yong-Ki Kim),안규복(yu-Bok Ahn) 전력전자학회 2004 전력전자학술대회 논문집 Vol.- No.-
This paper described a dc power system, which can generate the excessive dc power form dc bus line to ac source in substation for traction system. The proposed regeneration inverter system for dc traction can be used as both an inverter and an active power filter(APF). As a regeneration inverter mode, it can recycle regenerative energy caused by decelerating tractions and as an active power filter mode, it can compensate for harmonic distortion produced by the rectifier substation.