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A Study on Power Quality Improvement of Power Conversion System in Centralized-Power Type Electric Railway Vehicle  

Kim, Jae-Moon (한국철도대학 철도차량전기과)
Yun, Cha-Jung (한국철도공사)
Lee, Eul-Jae (이경산전(주))
Publication Information
Journal of the Korean Society for Railway / v.13, no.6, 2010 , pp. 559-564 More about this Journal
Abstract
This paper proposes an advanced filter design to improve power quality of a head electric power (HEP) as a power conversion unit in centralized-power type electric railway vehicle. First of all, we have measured waveform of output power of transformer connected HEP to design the filter. Throughout experiment and simulation results, it is estimated that switching technique used HEP is advanced selected harmonic elimination PWM (SHEPWM) and the applied switching frequency is about 300Hz. In this paper, a filter to improve power quality considering estimated parameters is designed. As a result, the reduction of the magnitude of the overall harmonic is achieved and confirmed through simulations.
Keywords
Filter design; Head electric power (HEP); Selected harmonic elimination PWM (SHEPWM); Cut-off frequency;
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Times Cited By KSCI : 1  (Citation Analysis)
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