Robust control of a wind turbine

The wind turbine is represented as an uncertain plant whose parameters depend on the wind speed. A two degree-of-freedom turbine speed controller is designed by using the technique of μ-synthesis. The frequency responses and time responses of the closed-loop system show a satisfactory performance of the linearized system. It is demonstrated that by relaxing the robustness requirements it is possible to achieve acceptable performance of the nonlinear closed-loop system as well.