按转子磁场定向的异步电机无速度传感器矢量控制系统

Speed sensorless vector control method of induction motor based onrotor flux-orientation

设计了一种新颖的无速度传感器的矢量控制系统.该系统采用转子磁场定向。

A speed sensorless control method based on a novel vector control is proposed according to former knowledge.In order to improve the performance of speed estimator,rotor flux orientation is adopted to realize flux and torque decoupling.Speed estimation is obtained according to the rotor quadrature-axis flux with PI adaptation control and closed speed loop is obtained.It is demonstrated that the method is implemented and good performance is attained.