 Downwind wind turbine yaw stability and performanceC. Kress, N. Chokani and R.S. Abhari Renewable Energy, 2015, vol. 83, issue C, 1157-1165 Abstract: In this experimental work, the yaw stability and performance of three different downwind rotors are measured and compared to those of the corresponding upwind rotors. A modular scale-model wind turbine that allows for either upwind or downwind operation, with a range of rotor cone and yaw angles, is used. The measurements, at near full-scale Reynolds numbers, show all downwind rotor configurations have yaw stability. On the otherhand, upwind turbines are shown to be either unstable or to have significantly reduced yaw stability compared to the corresponding downwind rotor configurations. Downwind configurations with zero, 5° and 10° cone have higher shaft power and rotor thrust than the corresponding upwind configurations. For zero yaw, the 5° and 10° cone angle, the downwind configurations each yield 5% more power, and have only 3% higher thrust, than the upwind configurations, indicating a potential benefit in performance compared to upwind configurations. Overall, it is concluded that coned downwind configurations provide for easier yaw control and yield more power. Keywords: Downwind wind turbine; Yaw stability; Cone angle; Tip speed ratio; Power; Thrust; Multi-megawatt (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:83:y:2015:i:c:p:1157-1165 DOI: 10.1016/j.renene.2015.05.040 Access Statistics for this article Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides More articles in Renewable Energy from Elsevier |
Is your work missing from RePEc? Here is how to contribute.
Questions or problems? Check the EconPapers FAQ or send mail to .
EconPapers is hosted by the
School of Business at Örebro University.