Nonlinear vector control strategy applied to a variable speed DFIG generation system

We present in this paper the modeling and control designs for a variable-speed constant-frequency wind energy conversion system using double fed induction generator. The aim of this paper is to develop a nonlinear vector control strategy using the second Lyapunov approach for the rotor side converter and a network voltage vector oriented control of the grid side converter and to maximize the energy captured from the wind turbine and injected to the grid. Simulation results of a DFIG generation system have shown good performances of the system under the proposed control strategy.