The invention provides a high-speed flight train traction converter and a traction converter control method.The device comprises n converter units, 2n pulse width controllers and combination switches, when the running speed of a high-speed flight train is in a first speed domain, the first combination switch is closed, the second combination switch is disconnected, and the n converter units are connected with the second combination switch; and when the running speed of the high-speed flying train is in a second speed domain, the second combination switch is closed, the first combination switch is disconnected, the states of three-phase switch tubes of the first three-level inverters and the second three-level inverters in all the current conversion units are controlled according to the time delay switch instruction so as to carry out current conversion control, and the second speed domain is higher than the first speed domain. Compared with the prior art, the technical scheme of the invention can solve the technical problems that a current device in the prior art cannot simultaneously realize low-speed large current, medium-speed and high-speed high voltage, the frequency continuously changes from zero, and an additional filtering device needs to be configured, so that the size is large.

    本发明提供了一种高速飞行列车牵引变流装置及牵引变流控制方法,该装置包括n重变流单元、2n个脉宽控制器以及组合开关,在高速飞行列车的运行速度处于第一速域内时,第一组合开关闭合,第二组合开关断开,在高速飞行列车的运行速度处于第二速域内时,第二组合开关闭合,第一组合开关断开,根据延时开关指令控制所有变流单元中的第一三电平逆变器和第二三电平逆变器的三相开关管状态以进行变流控制,其中,第二速域高于第一速域。与现有技术相比,本发明的技术方案能够解决现有技术中电流装置无法同时实现低速大电流、中高速高电压、频率从零开始连续变化以及需配置额外滤波装置导致体积大的技术问题。


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    Title :

    Traction conversion device and traction conversion control method for high-speed flying train


    Additional title:

    一种高速飞行列车牵引变流装置及牵引变流控制方法


    Contributors:
    MA XUN (author) / ZHANG YANQING (author) / WANG HAILIANG (author) / YANG XIN (author) / SHEN SHENGBING (author) / HU LIANGHUI (author)

    Publication date :

    2023-07-11


    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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