Harmonic mitigation using shunt active filtering function based a Wind Energy Conversion System equipped with double fed induction generator DFIG

This work presents the main role of renewable energy sources integration to improve the quality of energy in the electrical networks. In fact, controlled by the oriented flux technique, the double-feed induction generator DFIG driven by a wind turbine is together used to produce active power to the electrical network and to compensate the currents harmonics generated by non-linear loads, which leads to improve the power factor. The present work aims to a harmonic mitigation using a shunt active filtering function with accurate harmonic current identification and compensation based on instantaneous active and reactive power theory PQ. The closed loop control using a high-order sliding mode allows the generator to track the optimal operation points of the wind turbine and to compensate the currents harmonics. The Analysis and simulation results using MATLAB/SIMULINK confirm the effectiveness and limits of the proposed methods and also show the performances of the law control which provides flexibility, high precision and fast response.