Wind energy Conversion System Using PMSG Controlled by Vector Control and Nonlinear Backstepping Strategies

The control domain of nonlinear systems require robust controls to guarantee a level of stability and better performance. This paper treats a nonlinear control of a wind energy conversion system (WECS) based on a permanent magnet synchronous generator (PMSG) with maximum power extraction. A nonlinear control strategy proposed is Backstepping control (BSC) based on the Lyapunov approach. The objective of this paper is to target two main objectives via develop linear and non-linear control strategies for a wind energy conversion system based on a direct drive and variable speed. So, the wind energy conversion system (WECS) include both classical control based on PI regulators use for tracking the maximum power point with mechanical speed controller method in order to guarantee the maximum wind power and nonlinear Backstepping control based on Lyapunov theory using in the global scheme of the vector control by replacing the PI regulator by Backstepping regulator.