三相四脚并联有源电力滤波器的改进非脆弱H∞控制

2010 IEEE International Conference on Intelligent Computing and Intelligent Systems Pub Date : 2010-12-06 DOI:10.1109/ICICISYS.2010.5658469

Hong Qi, Zhenhua Shao, Ruiquan Lin

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引用次数: 1

摘要

首先建立了基于KVL的三相四腿有源滤波器周期平均动力学模型;针对控制复杂、动态补偿难以实现的问题，通过合理的假设将非线性数学模型转化为标准的线性模型。其次，针对具有参数摄动的APF控制器鲁棒性较低的问题，借助LMI，研究了三相四足APF的改进非脆弱H∞控制。仿真结果表明，在参数摄动的情况下，可以获得较好的补偿效果。此外，闭环APF能保持H∞指数稳定。

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Improved non-fragile H∞ control on Three-phase Four-leg shunt active power filter

Firstly the period averaging dynamic model of Three-phase Four-leg APF is established based on KVL. In the light of complex control and difficult implementation of dynamic compensation, the nonlinear mathematical model is changed into the standard linear model by reasonable hypothesis. Secondly, aiming at the problem that the APF controller with parameters perturbation has low robust, with the help of LMI, the improved non-fragile H∞ control on three-phase four-leg APF is studied in this paper. Finally, the simulation results are presented to prove that the good compensation effect can obtained with the parameters perturbation. Furthermore the closed-loop APF can remain H∞ index stable.

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2010 IEEE International Conference on Intelligent Computing and Intelligent Systems

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