A grid-connected variable-speed wind generator driving a fuzzy-controlled PMSG and associated to a flywheel energy storage system

•PMSG-based variable speed wind generator with MPPT and pitch angle control.•A fuzzy PMSG controller improves tracking and current fluctuations compared to PI.•An IM flywheel energy storage system is used to regulate power flow the grid.•Grid converter is controlled to obtain voltage and frequency required by the grid.