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首页> 外国专利> Quadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motor

Quadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motor

机译：正交轴绕组，用于单相永磁电动机的无传感器转子角位置控制

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A single phase permanent magnet motor includes a rotor, a stator, and a quadrature axis winding positioned out-of-phase from a main winding of the stator for generating an output signal representative of rotor angular position. An integrator can be coupled to the quadrature axis winding for phase retarding the output signal, and a comparator can be coupled to the integrator for detecting zero crossings of the phase retarded output signal to provide a commutation signal. The quadrature axis winding can be positioned about ninety electrical degrees out-of- phase from the main winding of the stator, and the integrator can be adapted to phase retard the output signal by a number of degrees which decreases as a speed of the motor increases. At low speeds the phase retard is preferably at about ninety degrees so that the phase retarded signal becomes in-phase with the main stator winding back EMF voltage. The motor may further include a rectifier coupled to the quadrature axis winding for rectifying the output signal, and a lowpass filter for filtering the rectified output signal to provide a signal proportional to velocity. Also the single phase motor is commutated for maximum torque production.
机译：单相永磁电动机包括转子，定子和与定子的主绕组异相定位的正交轴绕组，用于产生表示转子角位置的输出信号。积分器可以耦合到正交轴绕组以使输出信号相位延迟，并且比较器可以耦合到积分器以检测相位延迟的输出信号的零交叉以提供换向信号。正交轴绕组的位置与定子主绕组的相位可能相差约90电度，积分器可以使输出信号相位延迟若干度，该度数随电动机速度的增加而减小。在低速下，相位延迟最好约为90度，这样相位延迟信号就与主定子回绕EMF电压同相。电动机可以进一步包括：耦合到正交轴绕组的整流器，用于整流输出信号;低通滤波器，用于对整流后的输出信号进行滤波，以提供与速度成比例的信号。同样，单相电动机也经过换向以产生最大扭矩。

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