Preprints
https://doi.org/10.5194/wes-2023-29
https://doi.org/10.5194/wes-2023-29
23 Mar 2023
 | 23 Mar 2023
Status: this preprint is currently under review for the journal WES.

Aerodynamic response of a floating wind turbine scale model with inclusion of reference control functionalities

Alessandro Fontanella, Elio Daka, Felipe Novais, and Marco Belloli

Abstract. Design and verification of control strategies for floating wind turbines often makes use of aero-hydro-servo-elastic modeling tools. Aerodynamic loads calculation in these tools has been recently validated against experiments not including active wind turbine control. This work investigates the aerodynamic response of a floating wind turbine scale model with active control and platform pitch motion. This is done in wind tunnel testing and with modeling of the scaled system in the offshore tool OpenFAST. A control design framework is developed to include the reference wind turbine controller ROSCO in the wind tunnel experiment. With platform pitch motion, the turbine aerodynamic response is predicted by the numerical model with different accuracy depending on the turbine control regime. Below rated wind, oscillations of aerodynamic torque in simulations are of lower amplitude than in the experiment, also when dynamic inflow is considered in the aerodynamic model. Above rated wind, where the turbine is controlled with collective blade pitch actuation, the response is not quasi-steady, and differences between the experiment and simulation are larger than in below-rated wind, in particular for phase with respect to motion.

Alessandro Fontanella et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on wes-2023-29', Anonymous Referee #1, 11 May 2023
  • RC2: 'Comment on wes-2023-29', Anonymous Referee #2, 24 May 2023

Alessandro Fontanella et al.

Data sets

Aerodynamics of a Floating Wind Turbine Scale Model with Active Control Alessandro Fontanella, Elio Daka, Felipe Novais, and Marco Belloli https://doi.org/10.5281/zenodo.7741358

Model code and software

Aerodynamics of a Floating Wind Turbine Scale Model with Active Control Alessandro Fontanella, Elio Daka, Felipe Novais, and Marco Belloli https://doi.org/10.5281/zenodo.7741358

Alessandro Fontanella et al.

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Short summary
This work examines the aerodynamic response of a floating wind turbine due to platform pitch motion and active turbine control. This is done with a wind tunnel experiment and numerical simulations. A procedure is developed for scaling a reference controller and using it in the experiment. It is found the turbine aerodynamic response is predicted by the numerical model with different accuracy depending on the turbine control regime and the greatest differences are observed in above rated wind.