A peak power tracking wind system operating with a controlled load structure for stand-alone applications

This paper deals with a specific peak power tracking method designed for low power wind systems operating in autonomous mode. Tracking operation is based on battery control associated to a controlled load structure. The proposed system provides a good compromise between two power supply requirements: to maximize the wind energy conversion and to ensure the balance between required and produced power, considering in the same time the constraints imposed by the battery operation. The considered system performs the maximization of the wind energy conversion by adjusting the output voltage of a permanent magnet synchronous generator. The design of these structures was analyzed by digital simulation in Matlab / Simulink environment.