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

Wanke, Gesine; Bergami, Leonardo; Verelst, David Robert

doi:https://doi.org/10.5194/wes-5-929-2020

Articles | Volume 5, issue 3

https://doi.org/10.5194/wes-5-929-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/wes-5-929-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 5, issue 3

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, Leonardo Bergami, and David Robert Verelst

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Final revised paper (published on 23 Jul 2020)
Preprint (discussion started on 02 Dec 2019)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Referee Comment', Anonymous Referee #1, 22 Jan 2020
RC2: 'reviewer comments', Vasilis A. Riziotis, 26 Jan 2020
AC1: 'Answer to Referee comment #1 and #2', Gesine Wanke, 17 Feb 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Gesine Wanke on behalf of the Authors (17 Feb 2020) Author's response Manuscript

ED: Referee Nomination & Report Request started (05 May 2020) by Alessandro Croce

RR by Anonymous Referee #1 (05 Jun 2020)

RR by Vasilis A. Riziotis (09 Jun 2020)

ED: Publish subject to technical corrections (18 Jun 2020) by Alessandro Croce

ED: Publish subject to technical corrections (22 Jun 2020) by Jakob Mann (Chief editor)

AR by Gesine Wanke on behalf of the Authors (23 Jun 2020) Author's response Manuscript

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.