Harmonic Mitigation in a 3-Phase, 3-Wire System Using Hybrid Filter

Considering (IEEE-519) standards of power quality improvement. Due to increase in level of harmonics in the distribution system which is caused by rapid increase in the development of the power electronics equipment, there is a need to reduce harmonics level developed in the electricity grids due to these nonlinear loads. The paper includes the mitigation of harmonics level in the source current for power quality improvement of the system by using hybrid filter. The series passive filter has been designed along with an active filter based on p-q theory. It also includes the comparison of passive and hybrid filter and concludes that hybrid filter is best suited in reducing the THD of the distribution system based on simulation results.