Robust Economic Model Predictive Control for Variable Speed Variable Pitch Wind Turbines

In the modern wind power generation system, the economy of wind turbines, such as maximization the electric power while mitigation the turbine fatigue loads has aroused too much concern. Economic model predictive control is considered a suitable strategy to achieve the aforementioned economy goal. However, since the variable wind speed is difficult to measure efficiently, the wind speed error may lead to a series of problem for the traditional control. In this paper, a robust economic model predictive control is developed for variable speed variable pitch wind turbines. A linear feedback controller and corresponding robust control invariant set are designed off-line to ensure the wind turbine system's robustness. Simulation results are given to show the effectiveness of the proposed scheme.