The invention discloses a chopper and a magnetically levitated train, which are applied to the field of magnetic levitation, and comprise a power device, a bus capacitor and a Miller capacitor, the control ends of the power devices are connected with the controller, and the controller is used for controlling on and off of the power devices so as to achieve conversion of the voltage of the power source to supply power to the suspension electromagnet. The first end of the power device is connected with the first end of the miller capacitor, the second end of the miller capacitor is connected with the first controllable switch, the second end of the first controllable switch is connected with the control end of the power device, and the control end of the first controllable switch is connected with the first end of the power device. The first controllable switch is used for being closed at the moment when the power device is switched on and switched off. In the normal working process of the power device, the Miller capacitor can eliminate peak overvoltage at the moment when the power device is switched on and switched off, damage to the power device and the suspension electromagnet is avoided, a circuit is connected only at the moment when the power device is switched on and switched off, and loss is reduced.

    本发明公开了一种斩波器及磁悬浮列车,应用于磁悬浮领域,包括功率器件、母线电容及米勒电容;功率器件的控制端均与控制器连接,控制器用于分别控制功率器件的导通及关断以实现对电源的电压的转换以为悬浮电磁铁供电;功率器件的第一端与米勒电容的第一端连接,米勒电容的第二端与第一可控开关连接,第一可控开关的第二端与功率器件的控制端连接,第一可控开关的控制端与所述功率器件的第一端连接,第一可控开关用于在功率器件导通及关断的瞬间闭合。在功率器件正常工作的过程中,米勒电容可以在功率器件导通及关断的瞬间消除尖峰过电压,避免对功率器件以及悬浮电磁铁造成损伤,且仅在功率器件导通及关断的瞬间接入电路,降低损耗。


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    Titel :

    Chopper and maglev train


    Weitere Titelangaben:

    一种斩波器及磁悬浮列车


    Beteiligte:
    ZHAI MINGDA (Autor:in) / LI XIAOLONG (Autor:in) / ZHU PENGBO (Autor:in) / LONG ZHIQIANG (Autor:in) / DOU FENGSHAN (Autor:in) / WANG ZHIQIANG (Autor:in)

    Erscheinungsdatum :

    2023-03-21


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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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