基于空间矢量矩阵式变换器的闭环控制研究

Research on SVM-based closed-loop control for matrix converters

为了提高矩阵变换器(MC)对电网电压突变以及负载扰动的鲁棒性,提出了一种基于改进的比例积分(PI)控制的MC闭环控制的方法。该方法将实际输出电压和期望输出电压的比较偏差值作为负反馈量,利用改进的PI控制器实现对输出给定电压的跟踪控制,从而实现系统的闭环控制。仿真结果表明:该控制方案使MC系统获得了良好的稳态和动态性能。

In order to improve the robustness of the matrix converter（MC） to sudden voltage change and load disturbance,a closed-loop control method for MC based on modified proportional integral（PI） control was proposed.In the method,the discrepancy between the actual output voltage and the expected one was adopted as the negative feedback value,and the modified PI controller was used to track the reference voltage to realize closed-loop control.Simulation results indicated the control scheme effective.