To provide a three-phase power conversion system for an electric railway capable of appropriately protecting the system while suppressing an influence on a sound feeding circuit when a temporary heavy current is generated even when operated in conjunction with a three-phase railway power source.SOLUTION: A three-phase power conversion system for an electric railway includes a control device for controlling a conversion operation from DC power to three-phase AC power by an inverter. At normal time when the current flowing through a plurality of feeding circuits is determined to be lower than a predetermined value, the control device controls the operation of the inverter so that predetermined effective current and reactive current are supplied to the plurality of feeding circuits by setting a predetermined current command value on the output of the inverter. At the time of large current generation when the current flowing through any one of the feeding circuits is determined to be a predetermined value or higher, the control device controls the operation of the inverter so that the current output from the inverter becomes low by lowering the current command value to a lower level than at normal time.SELECTED DRAWING: Figure 2

    【課題】三相鉄道電源と連系して運用される場合にも、一過性の大電流が発生した際に、健全なき電回路への影響を抑制しつつ、システムを適切に保護できる電気鉄道用三相電力変換システムを提供する。【解決手段】インバータによる直流電力から三相交流電力への変換の動作を制御する制御装置を備え、制御装置は、複数のき電回路に流れる電流が所定値未満と判定した通常時においては、インバータの出力に関する所定の電流指令値を設定することにより、複数のき電回路に対して所定の有効電流及び無効電流を供給するように、インバータの動作を制御し、複数のき電回路のいずれかに流れる電流が所定値以上であると判定した大電流発生時においては、電流指令値を通常時よりも低くすることにより、インバータから出力される電流が低くなるように、インバータの動作を制御する電気鉄道用三相電力変換システムが提供される。【選択図】図2


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    Titel :

    THREE-PHASE POWER CONVERSION SYSTEM FOR ELECTRIC RAILWAY


    Weitere Titelangaben:

    電気鉄道用三相電力変換システム


    Beteiligte:
    TANAKA KOTARO (Autor:in) / KAI MASAHIKO (Autor:in) / NAGAI TAKUMI (Autor:in) / SHIMIZU TOSHIMASA (Autor:in)

    Erscheinungsdatum :

    2022-10-06


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / 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



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