Harmonics Cancellation in Distribution Systems by Using a Hybrid Power Filter

Abstract

This paper presents a proper method to filtering harmonics or cancel out the harmonic in Distribution grid.. The hybrid filter is presented in this paper, the limitation of the active and the passive power filter is overcome by developing the hybrid power filter . In the hybrid power filter the resonant cell is combining with voltage source inverter and this together combination is act as a hybrid power filter. and the rating of voltage source inverter can be increased with increased in dc-link voltage and hence the capability of harmonic mitigation can be increased with dc link voltage . The reactive power control and the improvement in power quality is also presented in this paper. the quality factor is responsible for selecting the frequency of tuning circuit. The MATLAB simulation design give the harmonic reduction in distribution grid or distribution system and in three phase four wire system, this system is most economical.