Articles | Volume 5, issue 3
Wind Energ. Sci., 5, 929–944, 2020
https://doi.org/10.5194/wes-5-929-2020
Wind Energ. Sci., 5, 929–944, 2020
https://doi.org/10.5194/wes-5-929-2020
Research article
23 Jul 2020
Research article | 23 Jul 2020

Differences in damping of edgewise whirl modes operating an upwind turbine in a downwind configuration

Gesine Wanke et al.

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Latest update: 01 Jul 2022
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Short summary
Converting an upwind wind turbine into a downwind configuration is shown to come with higher edgewise loads due to lower edgewise damping. The study shows from modal displacements of a reduced-order turbine model that the interaction between the forces on the rotor, the rotor motion, and the tower torsion is the main reason for the observed damping decrease.