Abstract
AbstractLevenberg—Marquardt (LM) algorithm-based current controller for shunt active harmonic filter (SAHF) is implemented for minimizing harmonic currents in power distribution network. A simple and versatile soft computing algorithm for implementing controller to minimize the current error of SAHF is developed for improving power quality (PQ) in conventional distribution grid. The effectiveness of the control algorithm proposed is analyzed considering group of balanced and unbalanced nonlinear supplied from a balanced sinusoidal AC power supply. The objective is to minimize the tracking error in the output of SAHF compensating current harmonics resulting in distortion-free source current. Simultaneous compensation of reactive power by SAHF results in unity power factor operation at the source. The algorithm is developed and implemented using MATLAB/Simulink environment using discrete solver.KeywordsLM algorithmArtificial neural network (ANN)SAHFHarmonicsTHD
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