Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5004596 | ISA Transactions | 2014 | 9 Pages |
â¢A nonlinear predictive generalized control applied to control WECS based on DFIG.â¢A nonlinear disturbance observer estimating the unknown aerodynamic torque.â¢The proposed controller structure is equivalent to a nonlinear PID.â¢Satisfying performances of the proposed control technique are obtained.
In order to make a wind power generation truly cost-effective and reliable, an advanced control techniques must be used. In this paper, we develop a new control strategy, using nonlinear generalized predictive control (NGPC) approach, for DFIG-based wind turbine. The proposed control law is based on two points: NGPC-based torque-current control loop generating the rotor reference voltage and NGPC-based speed control loop that provides the torque reference. In order to enhance the robustness of the controller, a disturbance observer is designed to estimate the aerodynamic torque which is considered as an unknown perturbation. Finally, a real-time simulation is carried out to illustrate the performance of the proposed controller.