一种有源电力滤波器直流母线电压模糊控制方法

摘要

It is very important to maintain shunt active power filter’s DC bus voltage, while it is difficult to control effectively by normal ways. Analyzed shunt active power filter DC bus control principle and limiter nonlinearity. The method combing PI control and fuzzy variable limit control was proposed and simulated. A prototype was built according to simulation parameters to verify algorithm. The simulation and experiment resuits show the method's effectiveness.%维持并联型有源电力滤波器直流母线电压稳定非常重要,常规控制方法难以实现直流母线电压的有效控制.分析了直流母线控制原理、限幅器的非线性特性,提出了一种将PI控制和模糊变限幅控制相结合的直流母线电压控制方法并进行仿真研究,根据仿真参数搭建样机验证算法,Matlab仿真和试验结果表明该方法的有效性.