The Design and Performance Analysis for Hybrid Active Power Filter of Rectifier Circuit

The rectifier circuit is widely used in industrial production, particularly in the heating, smelting, electrolysis, electroplating. The harmonic of the high-capacity three-phase bridge rectifier equipment seriously affect the power quality and harm the power equipment in industrial application. This paper designs the Hybrid Active Power Filter (HAPF) which combines the advantages of Passive Power Filter (PPF) and Active Power Filter (APF). In the harmonic detection, the paper uses the i(p)-i(g) detecting method on the basis of instantaneous reactive power theory. In the aspect of control strategy, the paper adopts hysteresis current control method. Using PSCAD/EMTDC electro-magnetic transient simulation software, three-phase bridge rectifier circuit and the filtering effect of HAPF are simulated and analyzed, the filtering effect of harmonic detection algorithm of two kinds of ip-ig is analyzed by simulation contrast. The simulation results show that the design of HAPF in this paper effectively inhibit the harmonic of three-phase bridge rectifier equipment. The design method in this paper provides theory basis for the realization of high capacity HAPF.