Robust control of a wind turbine

Abstract

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.

Adaptive control of a wind turbine based on neural networks

“…The overall learning algorithm now propagate the input forward using sensitivities back using (11) and (1 weights and offsets using (8) and (10 (3) (4) equations in matrix form (5) arn associations between a twork is 1 2 (6) work when the qth input, s the error for the qth input. gorithm we use an The performance index is (7) s replaced by the squared The approximate steepest (8) ine (9) e index to changes in the can be shown, using (3), (10) ivities satisfy the following 0 0 (11) d at the final layer (12) proceeds as follows; first, g (5); next, propagate the 12); and finally, update the 0).…”

“…P. F. Odgaard et al [4] used fault tolerant control of wind Turbines -a benchmark model. O. Ognyanova et al [5] presented robust control of a wind turbine. K. E. Johnson et al [6] proposed control of variable speed wind turbines.…”