单调谐并联混合有源电力滤波器控制策略研究.pdf

第16卷第4期
电机与控制学报
o.16
2012年4月
ELECTRIC MACHINES AND CONTROL
Apr.2012
单调谐并联混合有源电力澽波器控制策略硏究
时晓洁2,王智强2,张军明',钱照明
(1.浙江大学电气工程学院,浙江杭州310027;2.田纳四大学电气工程与计算机科学系,美国诺克斯威尔37916)
摘要:针对单调谐并联混合有源电力漶波器的补偿精确度受控制系统带宽严重制约的问题,提出
种同时反馈电网电流和五次谐波电流的双闭环控制策略,并对其直流侧稳压控制器进行详细的
分析和设计。根据单调谐并联混合有源滤波器的电路拓扑結构,推导系统在旋转坐标系下的小信
号模型及其传递函数,分别设计电网电流控制器,五次谐波电流控制器和电压环控制器。对采用所
提出的控制策略的有源漶波器进行仿真研究并制作实验样机。仿真和实验结果表明,该控制策略
具有很高的稳态补偿精确度和动态响应速度,易于数字实现,且由于只需要检測两路电网电流,节
省了装置成本。
关键词:并联混合有源电力滤波器;补偿精确度;电流环;电压环;双闭环控制;直流侧电压控制
中图分类号:TM464
文献标志码:A
文章编号:1007-449X(2012)04-0064-08
Study on the control strategy for single-tuned hybrid active power filters
SHI Xiao-jie", WANG Zhi-qiang, ZHANG Jun-ming, QIAN Zhao-ming
(1. College of Eleetrical Engineering, Zhejiang University, Hangzhou 310027, China
Department of Electrical Engineering and Computer Science, University of Tennessee, Knoxville 37916, USA)
Abstract: A DC link voltage controller and double loop control strategy with grid current and the fifth har-
monic current feedback are proposed to deal with the low compensation precision of the single-tuned par-
allel hybrid active power filters (PHAPFS ) due to low bandwidth. Specifically, the small signal model
and transfer function were derived firstly based on the circuit topology of the PHAPF. The double loop
controller and the voltage controller were designed. Simulation investigation was done and a prototype was
built. Simulation and experimental results verify that the proposed control strategies could not only ac
quire very high steady-state compensation precision as well as fast dynamic responses but also reduce the
cost of the equipment since only two phases of grid current are required to be detected
Key words: parallel hybrid active power filters; compensation precision; current loop; voltage loop
double closed loop control strategy; direct current link voltage contro
0引言
的电压和电流波形严重畸变,系统谐波水平不断上
升。自从20世纪70年代有源电力滤波器的基本理
电力电子技术的迅速发展与广泛应用使电网中论叩被提出之后,随着大中功率全控型半导体器件
收稿日期:2010-07-19
基金项目:国家自然科学基余(50907061)
作者简介:时晓洁(1986一),女,博士研究生,研究方向为电能质量控制技术、高压大功率变流器;
王智强(1985一),男,博士研究生,研究方向为大功率变流器设计、电力电子集成技术;
张军明(1975一),男,博士,副教授,研究方向为直流一直流变换器、电力电子系统集成技术
钱照明(1939一),男,博士,教授,博士生导师,研究方向为电磁兼容设计、大功率变流技术
通讯作者:时晓洁