| Summary: | Large scale wind turbines are subjected to fatigue, aerodynamics, structural flexibility and wind turbulencewhich lead to uncertain behavior of the wind turbine. The uncertainties are due to differences between themathematical model and the actual dynamics of the system in operation and the worn and torn effects.These elements are combinations of mass, stiffness, damping factors and moments of inertia of the rotor andgenerator. The uncertainties or perturbations in the wind turbine are indicated by variations between ±25%of the nominal values of the elements of the system matrix. These uncertainties in the wind turbine are dealtwith the proposed robustly stabilizing controller in this paper. The stable (Kp, Ki) regions of a Proportional-Integral (PI) controller are chosen by the Kharitonov’s theorem based 16-plant model. It can be shown thata simple PI controller can become robust by the correct selection of its parameters. The furnished resultsvalidate the above statement.
|
|---|
