Study on the aerodynamic damping for the seismic analysis of wind turbines in operation
Meng, J., Dai, K., Zhao, Z. , Mao, Z., Camara, A. 
ORCID: 0000-0002-1675-2640, Zhang, S. & Mei, Z. (2020).
Study on the aerodynamic damping for the seismic analysis of wind turbines in operation.
Renewable Energy, 159,
pp. 1224-1242.
doi: 10.1016/j.renene.2020.05.181
Abstract
The continuous cost reduction of wind turbines has consolidated the competitiveness of wind energy. With the increasing installation of wind turbines in seismic-prone regions, it is likely that earthquakes will strike farms in operation. A practical approach to predict the dynamic behavior of a wind turbine under simultaneous seismic and operational wind loads is investigated in this work. The combined action can be determined by analyzing the wind and the seismic-induced responses separately. However, an accurate definition of the aerodynamic damping is required for this purpose and there are few experimental studies on the additional damping source. A 1/100-scaled wind turbine model was designed and the aerodynamic damping of the model was identified. Subsequently, the ground motion was applied in the model by means of a shake table and the combined wind/earthquake response that was measured experimentally was compared with the response predicted by several combination rules. A numerical study using the FAST analysis package for wind turbines was also conducted to complement the experiments with fully-coupled simulations that include aeroelastic effects. This work provides a necessary experimental reference for structural engineers to use adequate aerodynamic damping and load combination methods for the seismic analysis of wind turbines in operation.
| Publication Type: | Article |
|---|---|
| Additional Information: | © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Publisher Keywords: | Wind turbine model, Experimental study, Aerodynamic damping, Wind-seismic interaction |
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences T Technology > TJ Mechanical engineering and machinery T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TL Motor vehicles. Aeronautics. Astronautics |
| Departments: | School of Science & Technology > Engineering |
| SWORD Depositor: |
Available under License Creative Commons Attribution Non-commercial No Derivatives.
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