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In this paper. a novel approach has been proposed to manage and improve the quality of the grid power using a WECS equipped by a DFIG. The RSC is controlled in such a way to manage between production of maximum active power and power quality improvement without any over-rating. The proposed priority control block gives top priority to active power production than power quality. and reactive power compensation has priority than active filtering. After active power production and power factor correction. the capability of the RSC is fully exploited for active filtering. without its over-rating. by the calculation of an appropriate portion of rotor current commands in such a way to ensure a better filtering quality and keep the RSC current under its rated value. Simulation results prove the effectiveness of the proposed approach. A selective filter can be used to compensate only the fifth and seventh most dominant harmonic currents. and guarantee a maximum capability of the RSC. in terms of active filtering. in the same way.
