The aim of this article is to propose an enhanced frequency regulator of a wind turbine generator associated with a flywheel applying an adaptive fuzzy proportional integral control, to supply a stand-alone load at 50 Hz. The flywheel energy storage system is used to balance the produced and consumed powers; it means the flywheel stores energy in case of power excess and delivers it in the opposite case. This power flow control stabilizes more the frequency around the set point. This hybrid renewable energy system is simulated by SIMPOWER in MATLAB Simulink software. Furthermore, performance improvement of the proposed new control is validated by the obtained satisfying results.
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