The invention provides a bidirectional traction converter, a method for controlling output of the bidirectional traction converter and an urban rail train power supply system. The bidirectional traction converter comprises a first capacitor, a second capacitor and a three-phase bridge arm unit; the positive electrode of the first capacitor is connected with the first terminal of each phase of bridge arm unit to serve as the positive electrode of a direct current bus, the third terminal of each phase of bridge arm unit is a three-phase alternating current bus, and the fourth terminal of each phase of bridge arm unit is connected with the positive electrode of the second capacitor after being connected; the negative electrode of the second capacitor is connected with the fifth terminal of each phase of bridge arm unit to serve as the negative electrode of the direct-current bus; the control unit is used for controlling the switching tube of each phase of bridge arm unit to be switched between switching states corresponding to different direct current output levels and different alternating current output levels, so that the bidirectional traction converter has different direct current side outputs and different alternating current side outputs, and is suitable for common winding work with step-down rectification topologies such as a diode rectifier and the like; and extra equipment cost and land occupation are not increased.

    本发明提出了一种双向牵引变流器及控制其输出的方法和城轨列车供电系统,双向牵引变流器包括第一电容、第二电容和三相桥臂单元;第一电容的正极与每相桥臂单元的第一端子连接以作为直流母线正极,每相桥臂单元的第三端子分别为三相交流母线,每相桥臂单元的第四端子连接后与第二电容的正极连接,第二电容的负极与每相桥臂单元的第五端子连接以作为直流母线负极;控制单元用于控制每相桥臂单元的开关管在不同的直流输出电平和不同的交流输出电平对应的开关状态之间切换,使双向牵引变流器具有不同的直流侧输出以及不同的交流侧输出,适用于与二极管整流器等降压整流拓扑共绕组工作,不会增加额外的设备成本和占地。


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    Title :

    Bidirectional traction converter, method for controlling output of bidirectional traction converter and urban rail train power supply system


    Additional title:

    双向牵引变流器及控制其输出的方法和城轨列车供电系统


    Contributors:
    YANG WENBO (author)

    Publication date :

    2021-12-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    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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