有源电力滤波器比例复数积分电流控制策略设计

摘要

In this paper, a kind of active power filter control system based on proportional complex integral controller under dq rotating coordinated system is proposed with purpose of improving effectively compensation ability of active power filter.For the higher positive sequence 7th order harmonic component and negative sequence 5th order harmonic component which are generated in the three-phase uncontrolled rectifier circuit and such feature as the positive and negative component changing into the 6th harmonic component under dq coordinated system, the zero steady error tracking of since wave signal can be achieved by the use of proportional complex integral control and, on the basis of traditional PI control, parallel the proportional complex integral control so to propose a kind of proportional complex integral current control algorithm and give detailed design method of the controller.The effectiveness and superiority of the proposed over the traditional PI control and proportional resonance control, is verified by the simulation result.%为了有效提高有源电力滤波器的补偿能力,提出了一种dq旋转坐标系下基于比例复数积分控制器的有源电力滤波器控制系统.针对三相不控整流电路产生的含量较高的正序7次谐波分量及负序5次谐波分量,在dq坐标系下正负分量变成6次谐波分量的特性,利用比例复数积分控制可实现正弦波信号的零稳态误差跟踪,并在传统PI控制的基础上并联比例复数积分控制,从而提出一种比例复数积分电流控制算法,并给出了控制器的详细设计方法.与传统PI控制和比例谐振控制相比较,仿真结果验证了所提方法的有效性和优越性.