| Issue |
MATEC Web Conf.
Volume 234, 2018
BulTrans-2018 – 10th International Scientific Conference on Aeronautics, Automotive and Railway Engineering and Technologies
|
|
|---|---|---|
| Article Number | 04006 | |
| Number of page(s) | 5 | |
| Section | Dynamics, Strength and Reliability of Vehicles | |
| DOI | https://doi.org/10.1051/matecconf/201823404006 | |
| Published online | 21 November 2018 | |
Some aspects of the influence of the vertical wind speed gradient on the blade aerodynamics loads in high class wind generators
Technical University of Sofia, Department of Mechanics, 8 Kl. Ohridski Blvd., 1000 Sofia, Bulgaria
* Corresponding author: j_genov@mail.org
The powerful wind generators, producing electric power on the order of megawatts are with impressive sizes. The studies on the interaction between the air flow and the wind turbine usually assume the airflow as homogeneous in vertical direction. While for smaller wind turbines this assumption does not lead to significant inaccuracies, for powerful generators the vertical gradient of the wind velocity causes a dependence of the aerodynamic interaction from the angle of rotation of the propeller and leads to a significant cyclic variability of the forces and moments acting on the blades, even for a flow considered as stationary in time. The study of this problem is important for strength loads and fatigue calculations as well as for an implementation of an individual pitch-control of the blades, which could allow a synthesis of a regulation depending on the angular position of the turbine. This could contribute to higher performance and higher reliability.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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