As for the problem the high current and the vibration of the torque, the double closed loops which include the current and power factor Angle are worked out.
对于电动机起动需要控制起动电流和转矩震动的问题，采用双闭环的控制方案，即电流闭环控制和功率因数角闭环控制。
Elements that affect the output power factor Angle are analyzed, the basic principle of constant power factor Angle control is studied and its realization scheme is presented.
分析了影响功率因数角的因素，研究了定角控制的基本原理，给出了定角控制方法的实现方案。
Elements that affect the output power factor Angle are analyzed, the basic principle of constant power factor Angle control is studied and its realization scheme is presented.
分析了影响功率因数角的因素，研究了定角控制的基本原理，给出了定角控制方法的实现方案。
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