Power quality improvement through harmonics mitigation using shunt hybrid power filter

This paper presents design of shunt passive filter and shunt hybrid power filter (SHPF) by simulation studies for reducing the harmonics which is the major issue with nonlinear load. The power filter contains both shunt passive filter and active power filter connected in series. The passive filter was first designed for harmonics compensation and the demerits of having fixed compensation is solved by SHPF. Simulations of shunt hybrid power filter with a typical distribution system have been carried out to validate the analysis. Harmonic analysis of the source current has been done. MATLAB simulation results are compared for the shunt hybrid power filter with the P-I controller and hysteresis controller.