有源滤波器电流环复合控制方法  

Compound Control Method for Current Loop in Active Power Filter

作　　者：曹效霞[1] 李岚[1] 

机构地区：[1]太原理工大学电气与动力工程学院,山西太原030024

出　　处：《河南科技大学学报（自然科学版）》2013年第6期50-55,6,共6页Journal of Henan University of Science And Technology:Natural Science

基　　金：山西省科技攻关基金项目(20110321061);太原市大学生创新创业人才基金项目(120164083)

摘　　要：分析了并联型有源滤波器的补偿原理,介绍了基于瞬时无功功率理论的谐波和无功电流检测方法。在电流环的控制方法中,针对单独使用PI控制时补偿性能的局限性,将重复控制引入电流的跟踪控制中,并采用PI加重复控制的复合控制策略对系统输出产生影响。通过Matlab/Simulink搭建复合控制的系统模型并进行系统仿真,在试验平台上加以试验。仿真和试验结果表明:补偿后系统电流谐波畸变率降低到1.33%,功率因数达到0.99,证明了复合控制的有效性和可行性。The compensation principle of active power filter was analyzed,and the measurement method of harmonic and reactive current based on instantaneous reactive power theory was proposed. In the control method of compensation current,aiming at the limitation of PI controller in compensation performance of active power filter,repetitive control was introduced in the tracking control of instruction current. Compound control strategy composed with PI controller and repetitive controller was adopted to affect the output of system. The system model based on compound control strategy was built and simulated by Matlab / Simulink. The experiment was made on test platform. The simulation and experiment results indicated that after compensation the total harmonic distortion of the system is reduced to 1. 33% and power factor is reached to 0. 99,which demonstrates the validity and superiority of the compound control.

关 键 词：有源滤波器 PI控制 重复控制 谐波畸变率 功率因数 

分 类 号：TM732[电气工程—电力系统及自动化]