摘要: This report investigates the minimal variations that can be achieved using a linear quadratic (LQ) controller while maintaining rated power in a stalled variable speed fixed pitch wind turbine. Analytic results can be derived with... 展开 This report investigates the minimal variations that can be achieved using a linear quadratic (LQ) controller while maintaining rated power in a stalled variable speed fixed pitch wind turbine. Analytic results can be derived with a very simple second order model. These results are confirmed by numerical analysis of higher order models with state estimation based on generator speed measurement. The characteristics derived from linear models have been verified through simulation using non-linear models. The controller is stability robust to parameter changes and significantly better than a traditional PI-controller at high wind speeds. 20 figs (ERA citation 19:032975) 收起