Robust Harmonic Elimination Method for Various Load Conditions

The present study implements a Direct Power Control (DPC) strategy to manage a photovoltaic (PV) system functioning as a shunt active power filter (shunt APF), aimed at providing reactive power compensation and mitigating harmonic currents while nonlinear loads are present. The DPC identification method effectively detects harmonics generated by these loads, while the shunt APF utilizes a maximum power point tracking perturb and observe (PO-MPPT) technique to optimize energy extraction via the PV source. Through extensive simulations in MATLAB Simulink, the research demonstrates the robustness of the shunt APF in eliminating harmonics under various load conditions, highlighting its potential for enhancing power quality (PQ) in electrical grids.