Nonlinear control strategy of a wind farm for participation in the system services without adding any storage organs

In this paper, we are interested in a nonlinear control of a wind farm connected to the electrical network based on permanent magnet synchronous generator. This control has two main objectives. Firstly, since the major problem of wind energy is the fluctuation of its primary source, to solve this problem, we develop in this study a control approach applied to this wind farm to ensure balance between production and consumption without adding storage organs despite intermittent form of the wind speed. Secondly, a comparative study between a classical PI controller and a non-linear regulator sliding mode are used to control our farm has been proposed. Due to external and internal perturbations of wind systems and the high range of wind speed variation, a PI controller has limited performances. It is sensitive against uncertainties and fluctuations. The simulation results validate the control strategy developed and show superior behaviour of the sliding mode than the PI controller.