Discrete-time MPC with constraints for variable speed wind turbines

This paper proposes a discrete-time predictive controller with constraints for variable speed horizontal wind turbines. The control strategy, implemented using discrete-time model predictive control (MPC) is optimized using a certain set of constrains applied to the control signal u(k). MPC provides an integrated solution for controlling systems with interacting variables, complex dynamics and constraints. The paper will show that with a small modification in the control signal, the degree of performance deterioration can be reduced if the constraints are incorporated in the implementation, leading to the idea of constrained control.