并联有源电力滤波器新型控制策略仿真研究  

Simulation research on shunt active power filter with a novel control method

作　　者：黄崇鑫[1] 王奔[1] 邹超[1] 鲍鹏[1] 

机构地区：[1]西南交通大学电气学院,四川成都610031

出　　处：《电力系统保护与控制》2009年第5期52-55,70,共5页Power System Protection and Control

摘　　要：三相三线并联有源电力滤波器(APF)能够实时地补偿谐波电流和无功电流。控制器作为APF的核心部件,它的性能好坏直接影响到APF的补偿效果。而影响控制器动态性能的关键因素是控制算法。考虑到APF的数学模型在dq坐标系下,是一个非线性耦合系统,首先采用逆系统方法将原系统线性化解耦,构造出伪线性系统。然后,再运用变结构控制,设计出这个伪线性系统的变结构控制律。最后,建立了APF的仿真模型对其进行仿真试验。试验结果表明,基于此控制策略设计出APF的控制器能使有源滤波器具备良好的补偿效果。Three-phase three-line shunt Active Power Filter （APF） can be used to restrain harmonic current and compensate reactive power current on-line. The controller of APF is a core. Its performances play a key role in APF with excellent functions, and a control method is a critical point for designing the controller. Considering that APF is a coupling nonlinear system in synchronous rotating dq coordinate system, this paper proposes a novel control method： firstly the original system model of APF is linearized and decoupled to be a pseudo-linear system which is made up of original system and inverse system. Then it adopts Variable Structure Control Theory （VSC）, and designs the variable structure control laws of this pseudo-linear system to control the system of APF. Finally, through establishing the system of APF and making simulations under the support of MATLAB soft, the excellent performances of APF to compensate harmonics and reactive power current have been verified sufficiently from the simulation results. The control method for APF presented in this paper is proved feasible and effective.

关 键 词：有源电力滤波器 逆系统方法 变结构控制 伪线性系统 谐波抑制 

分 类 号：TM76[电气工程—电力系统及自动化] TN713.8[电子电信—电路与系统]