三相并联有源滤波器的模型与控制

针对广泛使用的非线性负载（如整流器）易产生谐波和功率因数较低，设计了一种基于单位功率因数控制策略的用以抑制电网谐波、提高负载功率因数的三相并联有源滤波器。文章首先介绍了多功能三相单位功率因数变换器的基本思想，分析了主电路数学模型及双环（直流电压环和电流环）控制策略及模型。仿真和实验结果表明此方案是可行的。

Model and Control of Shunt Three-phase Active Power Filter

Owing to harmonics and low power factor of widely used nonlinear load(rectifier),a shunt three phase active power filter based on unity power control strategy is designed to suppress the harmonics and improve power factor in this paper.The basic principle is introduced firstly,model of main circuit and dual loop(DC voltage loop and main current loop)control strategy are analyzed.Finally,the simulation results show the proposed scheme is feasible.