The invention provides a train power supply system, a train power supply method and a train. The power supply system comprises a plurality of direct-current auxiliary converters, a first direct-current bus and a rectifying load which are connected in sequence. The rectifying load comprises a variable frequency air conditioner, a variable frequency motor and various direct current loads, and the multiple direct current auxiliary converters are used for reducing the voltage of the high-voltage direct current, so that the low-voltage direct current can be output to the first direct current bus, and the first direct current bus is used for transmitting the low-voltage direct current to the rectifying load. The problems of reactive power transmission, frequency stability and alternating voltage distortion when a rectification load is connected are solved, the rectification load is used for converting low-voltage direct current into alternating current so as to drive the rectification load to work, the direct current is directly input to the rectification load, the rectification load does not need to rectify the alternating current into the direct current, and the rectification load is used for converting the alternating current into the direct current. Therefore, the electric energy loss and the capacity demand are reduced, and the power supply capacity and the electric energy quality are improved.

    本申请提供一种列车供电系统、列车供电方法及列车,供电系统包括依次连接的多个直流辅助变流器、第一直流母线和整流性负载;整流性负载包括变频空调、变频电机和各种直流负载,多个直流辅助变流器,用于将高压直流电降压,这样可以输出低压直流电至第一直流母线,第一直流母线,用于向整流性负载传输低压直流电,供电系统不包括交流母线,不存在交流系统必然伴生的无功传递、频率稳定性问题,接入整流负载时交流电压畸变问题,整流性负载,用于将低压直流电转换为交流电,以驱动整流性负载工作,直接向整流性负载输入直流电,整流性负载无需将交流电整流为直流电,即可驱动整流性负载工作,降低电能损耗和容量需求,提高供电容量与电能质量。


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    Title :

    Train power supply system, train power supply method and train


    Additional title:

    一种列车供电系统、列车供电方法及列车


    Contributors:
    HA DALEI (author) / CHEN TIANYU (author) / TAO RAN (author) / JIN WENBIN (author)

    Publication date :

    2023-01-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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