三相四线制不对称系统有源电力滤波器的研究

Research of Active Power Filters Based on Three-phase Four-wire Unbalanced Systems

通过对并联有源电力滤波器的系统结构和工作原理的分析后,采用一种适用于三相四线制不对称系统的任意次谐波电流的无锁相环的检测和三维空间矢量脉宽调制技术,对有源电力滤波器进行了建模及仿真,验证控制算法的正确性。

By analyzing the system structure and mechanism of shunt active wave filter, the paper presented a novel 3-dimensianal space vector modulation technique and detection method without phase lock loop（PLL） for a 3-phase 4-wired unbalanced system. The active power filters of a three-phase four-wire unbalanced system was applied and simulated,the result verified correctness of the control method.