Hybrid and pure active power filters in the common application

摘要

The conception of parallel operation of pure active power filter (APF) and hybrid active power filter (HAPF) in three-phase energetic power system with unbalanced load is presented. The purpose of the filters is elimination of source current harmonics and compensation of reactive power in source-load system, with assumed efficient division of filtering task between both filters. HAPF is designed for rough filtration - it filters the fifth harmonic only, while the remaining harmonics are eliminated by APF. Using SLPS interface, the control system of filters was modelled in MATLAB-Simulink environment, and the three-phase energetic power system with source, load and filiters was implemented in OrCAD-Capture & PSpice environment.