The invention aims to provide a motor controller bus current acquisition method, which adopts a software mode to acquire motor controller bus current so as to cancel a current sensor, reduce the hardware cost of a motor controller and realize miniaturization and light weight of the motor controller. The motor controller bus current acquisition method comprises the following steps of: A, establishing a fitting curve of the bus current of the motor controller, motor torque and motor rotating speed; B, obtaining a bus current estimated value of the motor controller through the fitting curve according to the actual torque and rotating speed of the motor; and C, correcting the estimated value of the bus current of the motor controller to obtain the value of the bus current of the motor controller.

    本发明的目的是提出一种电机控制器母线电流获得方法,采用软件方式获取电机控制器母线电流,从而可取消电流传感器,降低电机控制器的硬件成本,同时可以实现电机控制器的小型化、轻量化。本发明的电机控制器母线电流获得方法包括如下步骤:A、建立电机控制器母线电流与电机扭矩、电机转速的拟合曲线;B、根据电机实际的扭矩、转速,通过上述拟合曲线得到电机控制器母线电流估算值;C、对电机控制器母线电流估算值进行修正,得到电机控制器母线电流值。


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    Title :

    Motor controller bus current acquisition method


    Additional title:

    一种电机控制器母线电流获得方法


    Contributors:
    CHEN SHIGANG (author) / CHEN YALI (author) / QIAN ZHAOGANG (author) / ZHANG JIE (author) / LI QINGGUO (author) / LIU LIANG (author) / SHU HUI (author)

    Publication date :

    2021-01-08


    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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