Novel hybrid active power filter structure to compensate harmonic currents and reactive power

This research proposes a novel topology to satisfy the requirements of Harmonic suppressing and reactive power compensation while designing HAPF. An effective strategy was developed to observe behaviour of compensation capacitors and passive filters placement with APF. Moreover, this study proposes a method in order to improve the harmonic suppression efficiency of HAPF for the problems caused by the voltage unbalance and distortion in control strategy. The proposed control technique gives an adequate compensating current reference even for non ideal voltage condition. The results of simulation study are presented to verify the effectiveness of the proposed topology and control technique in this study.