The invention relates to the technical field of railway vehicles, in particular to a BEMU railway vehicle low-voltage power supply circuit, a control method and device and a railway vehicle. The circuit comprises a voltage conversion unit and a high-voltage energy storage unit. The voltage conversion unit comprises a direct current converter, an auxiliary inverter and a charger; the direct-current converter is electrically connected with the high-voltage energy storage unit; the auxiliary inverter and the charger are electrically connected with the direct-current converter respectively; the input end of the auxiliary inverter is electrically connected with the output end of the high-voltage energy storage unit, and the auxiliary inverter is used for outputting alternating current; the input end of the charger is electrically connected with the output end of the auxiliary inverter, and the charger is used for converting the alternating current into low-voltage direct current and then supplying power to a low-voltage direct current load. The invention aims to solve the problem that in the prior art, an auxiliary storage battery is installed on a BEMU rail transit vehicle, so that the weight of the vehicle and the installation crowding degree between equipment are increased, and the energy consumption of the vehicle is increased.

    本发明涉及轨道车辆技术领域,尤其涉及一种BEMU轨道车辆低压供电电路、控制方法、装置及轨道车辆。该电路包括电压转换单元和高压储能单元;电压转换单元包括直流变换器、辅助逆变器和充电机;所述直流变换器与所述高压储能单元电连接,辅助逆变器和充电机分别与直流变换器电连接;辅助逆变器的输入端与所述高压储能单元的输出端电连接,辅助逆变器用于输出交流电;充电机的输入端与所述辅助逆变器的输出端电连接,用于将所述交流电转换为低压直流电后对低压直流负载进行供电。本发明的目的是解决现有技术中BEMU轨道交通车辆上安装有辅助蓄电池,增加了车辆的重量和各个设备之间安装的拥挤度,导致车辆的能耗增加的问题。


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    Title :

    BEMU rail vehicle low-voltage power supply circuit, control method and device and rail vehicle


    Additional title:

    BEMU轨道车辆低压供电电路、控制方法、装置及轨道车辆


    Contributors:
    ZHAO KONGCANG (author) / HAN QINGJUN (author) / TIAN QING (author) / WANG MIAO (author)

    Publication date :

    2023-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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