动态电压恢复器控制策略的研究与仿真

Research and Simulation of Control Strategies of Dynamic Voltage Restorer

简要分析了动态电压恢复器(DVR)常用的电压、电流双闭环PID控制策略,指出了该控制策略的不足。为了优化动态电压恢复器的输出性能,提高输出精度,经过理论分析,将常用的电压、电流双闭环PID控制和重复控制方法结合,形成复合控制方法,并介绍了控制器的设计。采用MATLAB/SIMULINK建立了逆变器的仿真模型,仿真结果表明复合控制方法具有优良的动静态性能及抗干扰能力。

Brief analysis of the dynamic voltage restorer （DVR） common voltage,current double closed-loop feedback PID control strategy,pointed out the deficiencies of the control strategy.In order to optimize the output performance of the inverter and increase the output precision,through theoretical analysis,the common voltage,current double closed loop PID control and repetitive control methods were combined to form a multiplexed Control method and the controller design was introduced.In the MATLAB/SIMULINK to create simulation model of inverter,the simulation results show that the composite control method has excellent dynamic and static performance.