Comparison of two compensation control strategies for shunt active power filter

The purpose of this paper is to present a harmonic mitigation using a shunt active filter with accurate harmonic current identification and compensation based on instantaneous active and reactive power theory and a self-tuning filter for the harmonic isolation and a fuzzy hysteresis band technique for the current control. In order to find the best strategy for the power quality improvement, a comparative study has been illustrated. The Analysis and simulation results using Matlab/Simulink confirm the effectiveness and limits of the proposed methods and also show the performances of fuzzy logic control which provides flexibility, high precision and fast response.