| Abstract |
This paper deals with the design of a controller for variable speed and fixed pitch horizontal axis wind
turbines (HAWT), using the sliding mode control theory. Two kinds of controller are presented,
according to two different control goals. The first one aims to obtain the optimal energy conversion
regime, by keeping the optimal tip speed ratio. The second one consists on a power tracking scheme.
In both cases, the proposed solution deals directly with the nonlinear model of the wind power system,
which is an advantage versus, for instance, the control strategies requiring linearization. Theoretical
results and Matlab & Simulink simulations are presented, allowing a comparative evaluation of the
two laws. A study of robustness is also presented. |
