摘要
电流跟踪控制是并联型有源电力滤波器(APF)的控制器设计的关键问题之一,利用APF的无源特性来实现电流跟踪控制可以取得较常规的线性和非线性控制器更好的控制效果。首先建立了三相四线制下四桥臂APF的状态空间模型;在此基础上利用无源控制方法构造电流跟踪动态控制器,然后基于APF的工作机理分析给出了实现渐近跟踪和内部稳定的充分条件;最后利用 PSCAD软件包对所提出的控制算法进行了仿真测试,证明了新算法的有效性。
The current tracking control is one of issues in controller designs of shunt active power filter （APF）. The idea of passivity is a powerful tool to study the stabilization of the nonlinear system. In this paper, the state space model of the four-leg APF for three-phase four-wire systems is determined firstly, A new passivity-based current tracking dynamic controller is then proposed. Based on the analysis of the working principle of APF, the sufficient conditions to achieve the gradual tracking and to keep the internal stability of the APF control system are given. Simulation results performed in PSCAD verify the validity of the new approach.
出处
《电力系统自动化》
EI
CSCD
北大核心
2006年第8期32-36,56,共6页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(50377018
K5112515E1)~~
