Robust power control using active disturbance rejection controller for floating offshore wind turbines
Résumé
Floating offshore wind turbines (FOWTs) have recently enabled wind power generation in the deep sea, which provides higher power harvesting. However, external factors such as wind and waves significantly impact the power production of FOWTs. The research proposes a power control strategy for an active disturbance rejection controller (ADRC) to maintain power output stability. An extended state observer (ESO) estimates feedback control for nonlinear systems. The ADRC uses the outcomes of the ESO to generate the blade’s pitch angle to control the power generation around the rated value. The proposed controller is used for a 5MW NREL FOWT mounted on a floating barge platform. The proposed controller will be tested for variable wind and wave operating conditions. The simulation results will be compared to the gain-scheduled proportional-integral (GSPI) baseline controller in the FOWT application. These results show that the proposed control technique performs better than the baseline controller.