The invention discloses a traction converter, a power battery pack capacity balancing circuit and a control method. A first auxiliary inverter is respectively connected with a first auxiliary transformer and a second auxiliary transformer through a first contactor contact and a fifth contactor contact; the second auxiliary inverter is respectively connected with the first auxiliary transformer and the second auxiliary transformer through a third contactor contact and a second contactor contact; one end of the contact of the fifth contactor is connected between the first auxiliary inverter and the contact input end of the first contactor, and the other end of the contact of the fifth contactor is connected between the contact output end of the second contactor and the second auxiliary inverter; one end of a third contactor contact is connected between the second auxiliary inverter and the input end of the second contactor contact, and the other end of the third contactor contact is connected between the output end of the first contactor contact and the first auxiliary transformer. According to the invention, the capacity balance when the capacity difference of the power battery pack is large is realized, the noise is low, and the economical efficiency and efficiency of the locomotive are further improved.

    本发明公开了一种牵引变流器、动力电池组容量均衡电路及控制方法,第一辅助逆变器通过第一接触器触点、第五接触器触点分别接第一辅助变压器、第二辅助变压器;第二辅助逆变器通过第三接触器触点、第二接触器触点分别接第一辅助变压器、第二辅助变压器;第五接触器触点一端接入第一辅助逆变器与第一接触器触点输入端之间,第五接触器触点另一端接入第二接触器触点输出端与第二辅助逆变器之间;第三接触器触点一端接入第二辅助逆变器与第二接触器触点输入端之间,第三接触器触点另一端接入第一接触器触点输出端与第一辅助变压器之间。本发明实现了动力电池组容量差较大时的容量均衡,同时噪声低,进一步提升了机车的经济性和效率。


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    Title :

    Traction converter, power battery pack capacity equalization circuit and control method


    Additional title:

    牵引变流器、动力电池组容量均衡电路及控制方法


    Contributors:
    FAN YUNXIN (author) / ZHANG SEN (author) / ZHANG HAN (author) / LV QINGZENG (author) / WANG XIULING (author) / LIU SHIJIE (author)

    Publication date :

    2024-04-30


    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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