A novel wake control approach for power generation improvement of three wind turbines in a wind farm

Erfanian Nakhchi Toosi, Mahdi and Rahmati, Mohammad (2022) A novel wake control approach for power generation improvement of three wind turbines in a wind farm. Journal of Engineering for Gas Turbines and Power, 144 (12). p. 121001. ISSN 0742-4795

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Official URL: https://doi.org/10.1115/1.4055455


The total power generation of a wind farm is significantly affected by the adverse wake generation of upstream wind turbines on the aerodynamic performance of the downstream wind turbines. This paper aims to provide a novel hybrid wake control strategy to improve the power generation of horizontal-axis wind turbines in a wind-farm layout. A numerical simulation based on the actuator line method with large eddy simulation (ALM–LES) is performed to investigate the airflow around three-dimensional National Renewable Energy Laboratory (NREL) 5 MW turbines in a three-by-one layout. The yaw angle (θ)(θ) and tilt angle (ϕ)(ϕ) of the wind turbines are in the range of (−30 deg<θ<30 deg)(−30 deg<θ<30 deg) and (0<ϕ<35 deg)(0<ϕ<35 deg)⁠, respectively. Firstly, the combined effects of yaw-control and tilt-control methods on the velocity profile, vorticity generation and turbulent kinetic energy in the wake region of the multiscale wind farm are investigated. Afterwards, the total power generation of the wind farm is compared with previous wake control methods of wind turbines. It was observed that the proposed hybrid wake control method could improve the total power generation by 9.94% compared to the previous wind turbine wake control techniques. The hybrid control strategy can deviate the wake much better than typical single-control methods. An optimization analysis is also provided to find the most appropriate yaw angles and tilt angles of the wind turbines subject to varying wind speeds.

Item Type: Article
Additional Information: ASME Turbo Expo 2022: Turbomachinery Technical Conference & Exposition; Rotterdam, Netherlands; 13-17 Jun 2022
Uncontrolled Keywords: Wind turbine, Wake-control, CFD, Power generation, Yaw angle
Subjects: H300 Mechanical Engineering
H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
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Depositing User: John Coen
Date Deposited: 11 Aug 2022 10:09
Last Modified: 21 Oct 2022 15:24
URI: https://nrl.northumbria.ac.uk/id/eprint/49823

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