基于三相旋转变换与极坐标变换的电机矢量控制

就异步电机旋转变换和实现方案进行了分析,采用了3相同步旋转与极坐标变换的方法,建立了新的电机旋转变换和极坐标矢量电压控制模型.由于这个模型具有直流电流调节器提供的矢量电压模和旋转角,显然方便SVPWM进行变频变压控制.分析变换使得电流跟随控制器为直流调节器,可在直流线性电压电流模型条件下设计电流反馈环,为交流异步电机矢量控制的实现,提供了新方法和新途径.

The Motor Vector Control Based on 3 Phase Rotation and Polar Coordinations Transforma-tion

This Paper analyzes the program of transformation and realization of the induction motor, and by using a three-phase syn- chronous rotation and the polar coordinates transformation method, establishes a new motor rotation transformation and polar vector voltage control model. Because this model has vector voltage mode and rotation angle provided by DC current regulator, it apparent- ly facilitates the SVPWM variable voltage variable frequency control. The results of analysis indicate there is a better design of the current feedback loop with these transforms making the current following controller the DC regulator and then in a linear model of voltage and current conditions, and provide new methods and ways for the AC induction motor vector control implementation.