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    • 4. 发明授权
    • Motor drive for permanent magnet synchronous motor
    • 永磁同步电动机驱动
    • US09048767B2
    • 2015-06-02
    • US13356348
    • 2012-01-23
    • Gregory I. RozmanThomas A. DuclosDuane A. James
    • Gregory I. RozmanThomas A. DuclosDuane A. James
    • H02P21/00H02P6/10H02P27/00H02P21/14
    • H02P6/10H02P21/14H02P21/22
    • A pulse-width modulation (PWM) inverter controller compensates for harmonics in the output current provided by a PWM inverter to permanent magnet (PM) motor. The PWM inverter controller includes a field-oriented controller (FOC) that monitors output currents provided by the PWM inverter to the PM motor and employs the monitored output currents in a current loop feedback that generates control signals. A harmonic compensator transforms monitored phase currents into rectangular waveforms having magnitudes modified based on detected harmonics within the monitored phase currents to generate compensation signals. The compensation signals generated by the harmonic compensator are summed with the control signals generated by the FOC to generate compensated control signals. A PWM signal generator generates PWM signals for controlling the PWM inverter based on the compensated control signals.
    • 脉冲宽度调制(PWM)逆变器控制器补偿由PWM逆变器提供给永磁(PM)电机的输出电流的谐波。 PWM逆变器控制器包括一个磁场定向控制器(FOC),该控制器监视由PWM逆变器提供给PM电机的输出电流,并在产生控制信号的电流环路反馈中采用监视的输出电流。 谐波补偿器将监视的相电流转换成具有基于检测到的相电流内检测到的谐波修改的幅度的矩形波形,以产生补偿信号。 由谐波补偿器产生的补偿信号与由FOC产生的控制信号相加以产生补偿控制信号。 PWM信号发生器基于经补偿的控制信号产生用于控制PWM逆变器的PWM信号。