基于积分变结构控制的并联型有源滤波器研究  

Research of Shunt Active Power Filter Based on Integral Variable Structure Control

作　　者：陈兆岭[1] 孙京京[1] 刘国海[1] 钱鹏[1] 

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013

出　　处：《电测与仪表》2012年第10期55-59,共5页Electrical Measurement & Instrumentation

基　　金：江苏省高校自然科学研究项目(11KJB470005)

摘　　要：给出了一种基于积分变结构控制理论的有源电力滤波器补偿电流和直流侧电压的统一控制方法,避免了补偿电流和直流侧电压由两个闭环分别控制。建立了三相三线制并联型有源电力滤波器在abc和dq坐标系下的数学模型,对等效控制率与实际控制率的差值积分得到积分滑模面,有效地减小了滑模运动中的抖振。通过构造一组开关函数等式,获得了驱动电压型逆变器的PWM信号。推导了滑模运动存在、可达及稳定的条件。采用Matlab仿真结果证明了该方法具有鲁棒性、抑制抖振的能力和良好的动静态性能。This paper presents a unified control strategy based on integral variable structure control （IVSC） theory. The control, strategy deals with compensation current tracking and de side voltage as a whole in the synchronous dq frame to avoid two separate loops. The mathematic model is built based on the abc/dq frame, an integral sliding mode function is obtained through the difference of equivalent control rate and actual control rate to reduce the chattering effectively. The PWM signals used to drive VSI are gained by constructing a group of switching function equations. The sufficient condition for the existence, accessibility and stability are derived. Matlab simulation results show that the presented control method is robust, chattering free and better dynamic and static property.

关 键 词：并联型有源电力滤波器 积分滑模变结构控制 统一控制 抖振 

分 类 号：TM714[电气工程—电力系统及自动化]