A Novel Shunt Hybrid Power Filter for the Mitigation of Power System Harmonics

Abstract

The aim of this paper is to present a novel shunt hybrid power filter (SHPF), which consists of a shunt active power filter (SAPF) extended by adding a series passive filter (SPF) branch in series with the nonlinear load. The series passive filter is used to block harmonics between the non-linear load and the utility side. Consequently the shunt active filter compensates only the reactive power and the unbalance current. Its rating is greatly reduced. The arrangement proposed in this paper can isolate polluting loads; thus the voltage at the point of common coupling will not be disturbed and consequently can be used to feed the sensitive loads. The performances of the shunt hybrid filter are examined; simulations were carried out with Matlab/Simulink.