Power active filter installation effect in three-phase four-wire distribution network

An active filter control strategy that uses pqr instantaneous power concept has been proposed to compensate for the harmonic distortion, line neutral current and reactive power in three-phase four-wire systems. The effectiveness of the proposed control was proved in simulations using Matlab/Simulink model of the power-supply system with an active filter where the harmonic pollution, reactive power and imbalance caused by a highly distorting load have been drastically reduced.