The invention relates to an electric vehicle motor rotor position determination method and an electric vehicle control device, and the method comprises the steps: obtaining a target current of a motor under an alpha axis of a two-phase static coordinate system after a high-frequency sinusoidal voltage signal is inputted to the motor, and enabling the component of the high-frequency sinusoidal voltage signal under a beta axis of the two-phase static coordinate system to be zero; extracting a high-frequency current corresponding to the high-frequency sinusoidal voltage signal from the target current; performing first discrete Fourier transform on the high-frequency current to obtain a current amplitude of the high-frequency current; performing second discrete Fourier transform on the current amplitude to obtain a first phase corresponding to the current amplitude; and based on the first phase and the phase offset corresponding to the first discrete Fourier transform, compensating the rotor angle of the motor collected by the Hall sensor to obtain a target rotor angle. According to the invention, the problem that the determination accuracy of the motor rotor angle is low is solved, and the technical effect of improving the determination accuracy of the motor rotor angle is achieved.

    本申请涉及一种电动车电机转子位置确定方法和电动车控制装置,该方法包括:在向电机输入高频正弦电压信号之后,获取电机在两相静止坐标系的α轴下的目标电流,高频正弦电压信号在两相静止坐标系的β轴下的分量为零;从目标电流中提取与高频正弦电压信号对应的高频电流;对高频电流进行第一离散傅里叶变换,得到高频电流的电流幅值;对电流幅值进行第二离散傅里叶变换,得到与电流幅值对应的第一相位;基于第一相位、以及与第一离散傅里叶变换对应的相位偏移,对霍尔传感器采集到的电机的转子角度进行补偿,得到目标转子角度。通过本申请,解决了电机转子角度的确定准确度较低的问题,实现了提高电机转子角度的确定准确度的技术效果。


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    Titel :

    Electric vehicle motor rotor position determination method and electric vehicle control device


    Weitere Titelangaben:

    电动车电机转子位置确定方法和电动车控制装置


    Beteiligte:
    LIU TIEDING (Autor:in) / LIU HUANCHENG (Autor:in) / ZHANG FANG (Autor:in) / HU LI (Autor:in) / LIU YI (Autor:in)

    Erscheinungsdatum :

    15.04.2025


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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