双闭环SVPWM控制的并联型有源电力滤波器仿真研究  

Simulation on Parallel Active Power Filter with Dual-Closed-Loop Space Vector Pulse Width Modulation Control

作　　者：袁洪[1] 余胜[1] 李俊[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《电工电气》2009年第4期10-12,25,共4页Electrotechnics Electric

摘　　要：给出了三相电压型PWM逆变器的数学模型,通过解耦得出一种新型快速双闭环电流控制策略,并将其用于有源电力滤波器(APF)电流控制系统。分析了电压空间矢量脉宽调制(SVPWM)的基本原理,与正弦波脉宽调制(SPWM)相比,该方法提高了控制精度,减少了开关损耗,直流侧电压利用率高。仿真结果证明了该新型双闭环SVPWM控制方法可以使补偿电流较为准确地跟踪电流指令,抑制负载谐波电流,是一种较为有效的电流跟踪控制方案。Mathematical model of three-phase pulse width modulation （PWM） voltage inverter was given. A new kind of high-speed dualclosed-loop current control strategy was obtained via decoupling, which was applied in active power filter （APF） current control system. The basic principle of voltage space vector pulse width modulation （SVPWM） was analyzed. Compared with sine pulse width modulation （SPWM）, the SVPWM enhanced the accuracy of control, reduced switching losses and raised utilization of DC side voltage. Simulation results show that the new dual-close-loop SVPWM control method can make compensation current track current instructions more accurately to restrain load harmonic currents, so it is a more effective current tracking plan.

关 键 词：有源电力滤波器 逆变器 空间矢量脉宽调制控制 

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]