基于三相旋转变换与极坐标变换的电机矢量控制

摘要

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.%This Paper analyzes the program of transformation and realization of the induction motor,and by using a three-phase synchronous 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 apparently 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.