Using Three-Level Fuzzy Space Vector Modulation Method to Improve Indirect Vector Control Strategy of a DFIG Based Wind Energy Conversion Systems

Abstract

This work present a Indirect Vector Command (IVC) method with three-level space vector modulation (SVM) and Fuzzy regulator (FR) of a doubly fed induction generator (DFIG) incorporated in a wind turbine system (WTS). Classical IVC command technique using three-level SVM inverter presents considerable stator reactive and stator active powers ripples at fixed state period. In order to guaranteed a strong IVC strategy for the DFIG-rotor side converter and decrease stator active and stator reactive powers ripples, a three-level SVM inverter strategy based on fuzzy logic regulator (FSVM) is used in this work. Simulation results show the competence of the proposed strategy of command particularly on the quality of the provided energy comparatively to a classical IVC using SVM inverter.