并联有源滤波器的复合电流跟踪控制策略研究

Study on Method of Compound Current Track Command for Shunt Active Filter

随着电力电子技术的不断发展,电网的污染问题也日渐受到了人们的关注。为了改善电网的污染状况,在研究了模糊递推积分比例积分PI控制和瞬时值比较控制的基础上,提出了一种采用瞬时值比较控制和模糊递推积分PI控制联合控制的方法。经过仿真验证,该算法能够满足谐波补偿控制系统响应速度和控制精度的要求,有效地提高了电力系统的滤波效果。

With the constant application of a variety of non-linear load,the pollution of power grid is becoming increasingly serious. In order to improve the harmonic control effect of power system,after analysis of shunt ac-tive filter,we study on fuzzy recursive integral PI control and instantaneous comparator control,and then pro-pose a compound control method. Simulation results show that this method is relatively simple,and better meet the requirements of response speed and control precision of system,which effectively improve the filtering effect of the power system.