PROBLEM TO BE SOLVED: To suppress application of overvoltage to a capacitor provided between a step-up chopper circuit and an inverter in a power conversion device for railway vehicle including the step-up chopper circuit and the inverter.SOLUTION: A power conversion device 2 for railway vehicle includes: a step-up chopper 3 which can be connected to the DC wire through a current collector 1 and boosts the voltage of the DC power supplied through the current collector; a filter capacitor 4 which is provided on the rear stage of the step-up chopper; a resonance inverter 5 which performs AC power conversion of the DC power with the voltage boosted by the step-up chopper; a transformer 6 in which the resonance inverter is connected to the primary winding; and a rectifier 7 which is connected to the secondary winding of the transformer. A filter circuit 13 including a reactor 11 and capacitor 12 for suppressing the surge voltage generated when the step-up chopper and resonance inverter are stopped is provided between the current collector and the step-up chopper.SELECTED DRAWING: Figure 1

    【課題】昇圧チョッパ回路とインバータとを有する鉄道車両用電力変換装置において、昇圧チョッパ回路とインバータとの間に設けられたコンデンサに過電圧が印加されることを抑制する。【解決手段】鉄道車両用電力変換装置2は、直流架線に集電器1を介して接続可能であり、集電器を介して供給された直流電力の昇圧を行う昇圧チョッパ3と、昇圧チョッパの後段に設けられたフィルタコンデンサ4と、昇圧チョッパで昇圧された直流電力を交流電力変換する共振インバータ5と、共振インバータが一次巻線に接続されたトランス6と、トランスの二次巻線の接続された整流器7とを有する。そして、集電器と昇圧チョッパとの間に、昇圧チョッパと共振インバータが停止したときに発生するサージ電圧を抑制するリアクトル11とコンデンサ12とを有するフィルタ回路13を備える。【選択図】図1


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    Title :

    POWER CONVERSION DEVICE FOR RAILWAY VEHICLE


    Additional title:

    鉄道車両用電力変換装置


    Contributors:

    Publication date :

    2018-07-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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