三相四线制有源电力滤波器主电路的结构形式与控制

Main circuit structure and control of the active power filter for three-phase four-wire system

三相四线制系统中如何使用有源电力滤波器来抑制线路中的谐波,这一问题越来越被人们所重视。本文介绍了在实现三相四线制有源电力滤波器时所采用的两种不同的主电路结构及其控制方法。实验和仿真结果表明,这两种不同形式的主电路有着各自的特点,均可对三相四线制系统中的谐波。

It is widely interested how to construct an active power filter to suppress the harmonics in three phase four wire system.In this paper,two types of main power circuits and their control methods are introduced when constructing active power filter in three phase four wire system.The results of experiment and simulation indicate that harmonics,negative and zero sequence current in three phase and four wire system could be compensated by two types of main power circuits.