Influence of atmospheric conditions on the power production of utility-scale wind turbines in yaw misalignment
Name
063307_1_online.pdf
Description
Published version
Size
2.84 MB
Format
Adobe PDF
Checksum (MD5)
1050247e82f339c0ca5b94ff6257ed28
Author(s)
Howland, Michael F
González, Carlos Moral
Martínez, Juan José Pena
Quesada, Jesús Bas
Larrañaga, Felipe Palou
Yadav, Neeraj K
Chawla, Jasvipul S
Dabiri, John O
Date Issued
December 21, 2020
Journal
Journal of Renewable and Sustainable Energy
Publisher
AIP Publishing
Citation
Michael F. Howland, Carlos Moral González, Juan José Pena Martínez, Jesús Bas Quesada, Felipe Palou Larrañaga, Neeraj K. Yadav, Jasvipul S. Chawla, John O. Dabiri; Influence of atmospheric conditions on the power production of utility-scale wind turbines in yaw misalignment. J. Renewable Sustainable Energy 1 November 2020; 12 (6): 063307.
Version
Final published version
Abstract
The intentional yaw misalignment of leading, upwind turbines in a wind farm, termed wake steering, has demonstrated potential as a collective control approach for wind farm power maximization. The optimal control strategy and the resulting effect of wake steering on wind farm power production are in part dictated by the power degradation of the upwind yaw misaligned wind turbines. In the atmospheric boundary layer, the wind speed and direction may vary significantly over the wind turbine rotor area, depending on atmospheric conditions and stability, resulting in freestream turbine power production which is asymmetric as a function of the direction of yaw misalignment and which varies during the diurnal cycle. In this study, we propose a model for the power production of a wind turbine in yaw misalignment based on aerodynamic blade elements, which incorporates the effects of wind speed and direction changes over the turbine rotor area in yaw misalignment. The proposed model can be used for the modeling of the angular velocity, aerodynamic torque, and power production of an arbitrary yaw misaligned wind turbine based on the incident velocity profile, wind turbine aerodynamic properties, and turbine control system. A field experiment is performed using multiple utility-scale wind turbines to characterize the power production of yawed freestream operating turbines depending on the wind conditions, and the model is validated using the experimental data. The resulting power production of a yaw misaligned variable speed wind turbine depends on a nonlinear interaction between the yaw misalignment, the atmospheric conditions, and the wind turbine control system.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
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DOI of Published Version
https://doi.org/10.1063/5.0023746
