Baseline Control Strategy for Maximum Power Tracking for a 5MW Offshore Wind Turbine

This praper proposes a baseline control strategy for a 5 MW variable speed offshore wind turbine. Its main objective is to capture maximum power while reducing fatigue due to overloads. The approach controls the torque when wind speeds are below the rated value and the pitch angle when the wind speeds are above the rated value. The controller's dynamic stability was proven using the Lyapunov theory. The design was implemented on a 5 MW variable speed wind turbine modeled using the fatigue, aerodynamic, structures, and turbulence (FAST) aeroelastic simulator. The obtained results show that the controller was able to optimize power extraction when wind speeds are below the rated value, and maintain it constant when wind speeds are above the rated value. The proposed approach ensures optimum power generation while at the same time mitigating overloading, thus extending wind turbine's lifespan and ensuring its efficiency.