基于电压闭环控制的矩阵变换器仿真研究

Simulating Research on closed-loop control method of matrix converter

针对矩阵变换器开环控制碰到扰动输出电压波形不能自动调节的问题,采取电压闭环的控制方式,通过坐标系变换将输出电压采样变换得到空间矢量,与目标电压矢量进行比较得到偏差量,以此来进行反馈控制,并运用MATLAB软件进行器件建模及控制策略、电压闭环控制方法的仿真。通过对两种典型干扰仿真研究,表明电压闭环控制方法对于输入干扰抑制的有效性。

Because the output voltage can＇ t adjust itself to against the input disturbance under the open loop control mode, a closed loop method is used. By coordinate transformation for abc to dq , the output voltage can be transformed to space vector, then compared with the expected voltage, the errors can be used for feedback and controlling. Matlab simulation is used for device modeling, control strategy and voltage based closed loop control method. Though study for two kinds of typical interference, The simulation results show that voltage closed loop control method is feasible to input interference inhibition.