Case Study: 20-MW Reference Wind Turbine

The material developed along different chapters should be exemplified by a practical implementation. This is carried out by means of a case study. Because large wind turbines are not available for research experiments, the machine is replaced by a reference wind turbine as described in Chap. 12. As a concrete machine, the 20-MW reference wind turbine has been selected. Modelling aspects, like parametrization as well as aerodynamic coefficients and derivatives, and the observer design as presented in Chap. 4 are for the example concretized. Control algorithms for the partial load operation following Chap. 9 and for full load operation according to Chap. 10 are implemented. Results are obtained by using the simulation environment developed following the directives of Chap. 14, and the control performance is evaluated from the different perspectives pointed out in Chap. 13.