有源电力滤波器优化变结构电流控制策略

为了抑制三相并联有源电力滤波器运行过程中参数变化对补偿效果的影响，在对并联型三相电力有源滤波器建模与分析的基础上设计了一种分段趋近律的变结构电流补偿控制策略，在初始阶段变结构控制采用恒指数趋近律以提高系统响应速度，然后采用变指数趋近律使系统进入滑模面，能够有效抑制消除传统变结构控制存在的抖振问题。仿真和实验结果表明，该控制策略对系统扰动不敏感，系统动态响应快，网侧电流为正弦波且基本与电压同相位，波形畸变率低，电流补偿效果明显优于传统变结构控制策略。...

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Bibliographic Details
Published in电测与仪表 Vol. 51; no. 22; pp. 67 - 71
Main Author 刘保连 王钰霖 丁祖军
Format Journal Article
LanguageChinese
Published 淮阴工学院 电子与电气工程学院，江苏 淮安，223003%空军航空大学,长春,130022 2014
Subjects
变结构控制
有源电力滤波器
电流补偿
趋近律
趋近律
变结构控制
电流补偿
variable-structure control
current compensation
active power filter
reaching law
有源电力滤波器
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ISSN1001-1390

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Summary:为了抑制三相并联有源电力滤波器运行过程中参数变化对补偿效果的影响，在对并联型三相电力有源滤波器建模与分析的基础上设计了一种分段趋近律的变结构电流补偿控制策略，在初始阶段变结构控制采用恒指数趋近律以提高系统响应速度，然后采用变指数趋近律使系统进入滑模面，能够有效抑制消除传统变结构控制存在的抖振问题。仿真和实验结果表明，该控制策略对系统扰动不敏感，系统动态响应快，网侧电流为正弦波且基本与电压同相位，波形畸变率低，电流补偿效果明显优于传统变结构控制策略。
Bibliography:LIU Bao-lian, WANG Yu-lin, DING Zu-jun （ 1. Faculty of Electronic and Electrical Engineering, Huaiyin Institute of Technology, Huai＇ an 223003, Jiangsu, China. 2. The Aeronautical University of the China People Liberation Airforce, Changchun 130022, China）
active power filter;reaching law;variable-structure control;current compensation
23-1202/TH
A piecewise reaching law variable-structure current compensation control strategy was designed based on the modeling and analysis of the three-phase shunt active power filters in order to suppress the influence of the pa-rameter variation on the compensation effect in the operation process of the three-phase shunt active power filters. In the initial stage ,the variable-structure control adopted the constant exponential reaching law to increase the response speed of the system,then the variable exponential reaching law was adopted to make the system convergent to the slid-ing mode surface so that the chattering problem existing in the traditional variable-structure cont
ISSN:1001-1390