The invention discloses a fault detection method and device for a motor power device, electric equipment and a storage medium, and the method comprises the steps: determining that the power device of a motor controller breaks down, and controlling a power battery to stop supplying power to the power device; controlling the low-voltage power supply to charge a bus capacitor connected in parallel with the power device; and determining the fault type of the power device according to the voltage at the two ends of the bus capacitor. On the basis of the original high-voltage topological structure of the electric equipment, new parts do not need to be added, when the motor controller breaks down, only the low-voltage power supply needs to be utilized, low-voltage electricity is converted into high-voltage electricity through the voltage converter, the bus capacitor is charged, and the fault type of the motor controller is automatically diagnosed according to whether charging succeeds or not; the disassembly time and the maintenance cost are saved, and the maintenance cost of electric equipment is reduced.

    本申请公开了一种电机功率器件的故障检测方法、装置、用电设备及存储介质,该方法包括:确定电机控制器的功率器件发生故障,控制动力电池停止为功率器件供电;控制低压电源向与功率器件并联的母线电容充电;根据母线电容两端的电压,确定功率器件的故障类型。本申请基于用电设备原有的高压拓扑结构,无需增加新部件,在电机控制器出现故障时,只需利用低压电源,通过电压转换器将低压电转换为高压电,为母线电容充电,并依据是否充电成功来自动诊断电机控制器的故障类型,节省拆机时间和维修成本,降低用电设备的维护成本。


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    Title :

    Fault detection method and device of motor power device, equipment and storage medium


    Additional title:

    电机功率器件的故障检测方法、装置、设备及存储介质


    Contributors:
    YUN LUN (author)

    Publication date :

    2022-06-24


    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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