一种包含逆变环节的APF技术的研究

Research About APF Contains Inverter

通过分析有源电力滤波器(APF)的发展和电路拓扑结构以及控制策略,并结合逆变电路自身的电路特点,再通过理论总结,提出了一种利用一个三相全控桥装置,同时实现逆变和有源滤波两种功能。经过Matlab仿真和实验波形分析得出该此种方案能够有效实现逆变和滤波两项功能,在谐波检测环节采用积分算法来进行谐波电流检测。

On the basis of analysing the development of APF and its circuit, this paper makes a summary of its con- trol strategy and introduces a method of detecting the harmonic currents with integration algorithm.Considering the characteristics of the inverter circuit, the paper proposes that the function of inverter and active filter can be realized by using a three-phase inverter bridge.Through the simulation of Matlab, it can be drawn that the proposed method can effectively achieve both the functions of inverter and active power filter.