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    • 4. 发明授权
    • Sensorless induction motor control
    • 无传感器感应电机控制
    • US06756763B2
    • 2004-06-29
    • US10137594
    • 2002-05-02
    • Gurinder Singh KahlonNing LiuRobert Joseph MohanRichard Eric Luken
    • Gurinder Singh KahlonNing LiuRobert Joseph MohanRichard Eric Luken
    • H02P142
    • H02P23/14H02P23/0004H02P27/047
    • A method for controlling an induction motor using an equivalent circuit model, the equivalent circuit having a real component and an imaginary component, is disclosed. The method instead of measuring a plurality of induction motor parameters, the real and the imaginary component of the induction motor impedance are calculated based on the measured phase currents and voltages. The invention calculates a first control function based on the real component of the induction motor impedance, and a second control function based on the imaginary component of the induction motor impedance, and adjusts the induction motor excitation frequency until the first control function is approximately equal to the second control function. After the excitation frequency is determined, the motor torque is calculated by taking the square of motor voltage in the d-q reference frame. Working with a few control parameters, the present invention achieves a desired maximum torque or a desired peak efficiency with a high tolerance of variation in the control parameters.
    • 公开了一种使用等效电路模型来控制感应电机的方法,该等效电路具有实部和虚部。 该方法代替测量多个感应电动机参数,基于所测量的相电流和电压来计算感应电动机阻抗的实部和虚部。 本发明基于感应电动机阻抗的实际分量和基于感应电动机阻抗的虚分量的第二控制功能来计算第一控制功能,并且调整感应电动机的激励频率,直到第一控制功能近似等于 第二个控制功能。 在确定激励频率后,通过在d-q参考系中取电动机电压的平方来计算电动机转矩。 使用几个控制参数,本发明通过控制参数的变化的高公差来实现期望的最大扭矩或期望的峰值效率。