基于改进型重复控制器的双级矩阵变换器闭环控制研究

闭环控制是抑制多种扰动、保证双级矩阵变换器(TSMC)输出电压质量的有效方法.针对PI控制器对谐波控制的不足,将重复控制技术与PI控制相结合,应用于TSMC逆变级的闭环控制中;在此基础上提出了重复控制器的改进方案:对由非周期性扰动引起的误差不进行记忆,以避免其对重复控制器的控制动作产生干扰.仿真结果表明了所提控制方案良好的动静态性能,验证了该文控制思路的可行性.

Study on Closed- Control for Two- stage Matrix Converter Based on Modified Repetitive Controller

Closed-loop control is a reasonable method to ensure the performance of output voltage of Two-stage Matrix Converter(TSMC) by restraining multi disturbances.In order to overcome the shortcoming of PI controller in harmonics control,the repetitive control and PI control are combined and used in the closed-loop control of TSMC;The problem of conventional repetitive controller is pointed out and a modified repetitive control method is proposed: To avoid the influence of no-periodical disturbance on the control action of repetitive controller,the error caused by no-periodical disturbance is identified and discarded.Simulation results show good dynamic and steady performance of the proposed method and verified it's feasibility.