A hardware-in-the-loop wave-basin scale-model experiment for the validation of control strategies for floating offshore wind turbines
AuthorsFontanella, A., Liu, Y., Azcona, J., Pires, O., Bayati, I., Gueydon, S., Ridder, E.J. de, Wingerden, J.W. van, Belloli M.
Conference/Journal“The Science of Making Torque from Wind” (TORQUE 2020), Delft, the Netherlands
DateMay 26, 2020
This paper presents a new hardware-in-the-loop methodology for wave-basin scalemodel experiments about floating offshore wind turbines and its application as a tool for the validation of control strategies. In the hardware-in-the-loop experiments, the physical Froude-scaled wind turbine model used in conventional scale-model tests is replaced by a numerical model, measurements and a multi-fan actuator. As usual, properly-scaled waves are generated in the wave basin and the oating platform is simulated by means of a scalemodel. The hardware-in-the-loop methodology was used to recreate the interaction between the collective pitch controller and the platform pitch mode that, often observed in numerical studies. In addition, the blade-root load measurement available in the numerical model of the rotor was used to implement an individual pitch control strategy. Different from in conventional experiments, the hardware-in-the-loop methodology allows to recreate a realistic three-dimensional wind field that was used to demonstrate the effectiveness of the individual pitch control. The improved emulation of the rotor loads and wind field make the hardwarein-the-loop experimental methodology an effective tool for the development and validation of control strategies for floating offshore wind turbines.