The Design of Hybrid Active Power Filter based on Harmonics Detection and Its Simulation Research

This paper puts forward a design method of hybrid active power filter which is based on harmonics detection and identifying. Firstly the paper analyzes damage and causes of the harmonics, then several solutions to harmonics problems are devoted to harmonic suppression. The hybrid active power filter, which combines active power filter, passive power filter and generalized integrators, and which has their both respective merits, leading the development of electric reliability and quality. According to minimum current principle of harmonic compensation, the compensation performance of hybrid active power filter in power distribution system has been analyzed and verified by Matlab simulation, and the stable current experimental results shows this power filter in this paper is going quite well effect on harmonic compensation in circuit, and this hybrid filter which connects in series active filter and passive filter improves the compensations performance remarkably, meanwhile avoiding the expensive initial cost.