Power management of a variable speed wind turbine for stand-alone system using fuzzy logic

In this paper, a wind energy conversion system (WECS) using a variable speed synchronous generator and a battery to store extra wind energy is proposed. A fuzzy logic supervisor is developed to manage both the energy production and its storage to obtain an optimal behaviour of the system and to ensure the load requirement. Many simulation results are presented to show that the proposed method gives good performance for its application in autonomous wind energy systems and can extend battery life.