基于预测控制的有源电力滤波器选择性谐波补偿方法  

A Predictive Control Based Selective Harmonic Compensation for Active Power Filter

作　　者：李国华[1] 张影[1] 汪玉凤[1] 孙强 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,辽宁省葫芦岛市125105 [2]山西潞安矿业集团公司王庄煤矿,山西省长治市046204

出　　处：《电网技术》2014年第10期2938-2942,共5页Power System Technology

基　　金：国家自然科学基金项目(51307076)~~

摘　　要：提出一种基于预测控制的并联型有源电力滤波器(active power filter,APF)选择性谐波补偿方法。首先通过选择性谐波检测方法确定有源电力滤波器的参考电流值,并通过相位补偿降低系统延时的影响;然后在电流跟踪控制环节中引入预测控制,预测下一采样周期的参考电流值,并加入校正因子来消除预测误差;在此基础上计算出有源电力滤波器的参考电压矢量;最后利用空间矢量脉宽调制法(space vector pulse width modulation,SVPWM)控制三相逆变器的实际输出电压跟踪参考电压,从而达到选择性谐波补偿的目的。实验结果证明了该方法的有效性。A predictive control based selective harmonic compensation method for shunt active power filter （APF） is proposed. Firstly, using selective harmonic detection method the reference current of APF is determined, and by means of phase compensation the influence of the delay due to digital control system is reduced; then the predictive control is led into current tracking control link to predict the reference current value in next sampling period, and the correction factor is added to eliminate prediction error; and then the reference voltage vector of the APF is calculated; finally the actual output voltage of the three-phase converter is controlled to trace the reference voltage by space vector pulse width modulation （SVPWM）, thus the selective harmonic compensation is implemented. Experimental results show that the proposed method is effective.

关 键 词：有源电力滤波器 选择性谐波补偿 预测控制 空间矢量脉宽调制 相位补偿 

分 类 号：TM71[电气工程—电力系统及自动化]