无传感器双馈风力发电机的转速辨识

Speed Identification of Doubly Fed Wind Power Generator without Sensor

针对双馈电机系统所采用的定子磁场定向矢量控制,采取了比较简便易行的PI自适应控制来估算转速,利用电机的状态方程计算转子位置角,并分别用于磁场定向矢量控制的速度闭环和坐标变换中,并通过MATLAB仿真验证了该方法的可行性。

For the use of stator field-oriented vector control in doubly fed wind power generator（DFIG）,this paper introduces the method to estimate speed with PI adaptation and calculate the rotor position with state equation of the motor.The two parameters are respectively used in the speed closed loop and coordinate transformation in field-oriented vector control.At last,experiment by MATLAB proves the method is correct and practicable.