A system and method for protecting a vehicle inverter from overvoltage. The system includes a first inverter having switching elements and converting energy from an energy storage device into AC power; a first motor driven by receiving the converted AC power; a second inverter connected in parallel with the first inverter, including a switching elements, and converting energy from the energy storage device into AC power; a second motor driven by receiving the converted AC power; a first capacitor connected in parallel between the first inverter and the energy storage device and storing electric energy of the first motor during regenerative braking; and a controller which turns off a relay connecting the energy storage device and the motor when a voltage of the first capacitor is equal to or greater than a predetermined voltage and operates the switching elements in the inverters in response to first and second current commands.

    本发明涉及保护车辆中的逆变器免受过压影响的系统及方法。所述系统包括:第一逆变器,其具有开关元件,并且将能量储存装置的能量转换为交流电;第一电机,其通过接收转换后的交流电而驱动;第二逆变器,其与第一逆变器并联连接,包括开关元件,并且将能量储存装置的能量转换为交流电;第二电机,其通过接收转换后的交流电而驱动;第一电容,其并联连接在第一逆变器与能量储存装置之间,并且在再生制动过程中储存第一电机的电能;以及控制器,当第一电容的电压等于或大于预定的电压时,所述控制器断开连接能量储存装置与电机的继电器,并且响应于第一电流指令和第二电流指令来操作逆变器中的开关元件。


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    Title :

    SYSTEM AND METHOD FOR PROTECTING INVERTER IN VEHICLE FROM OVERVOLTAGE


    Additional title:

    保护车辆中的逆变器免受过压影响的系统及方法


    Contributors:

    Publication date :

    2021-10-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen



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    CHON CHAE DUCK / HAN NAM KOO | European Patent Office | 2021

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