Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models

Stammler, Matthias; Schwack, Fabian; Bader, Norbert; Reuter, Andreas; Poll, Gerhard

doi:https://doi.org/10.5194/wes-3-97-2018

Articles | Volume 3, issue 1

https://doi.org/10.5194/wes-3-97-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/wes-3-97-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 3, issue 1

Research article

|

14 Mar 2018

Research article |

| 14 Mar 2018

Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models

Matthias Stammler, Fabian Schwack, Norbert Bader, Andreas Reuter, and Gerhard Poll

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Final revised paper (published on 14 Mar 2018)
Preprint (discussion started on 02 May 2017)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Reviewer comments', Anonymous Referee #1, 19 May 2017
- AC1: 'Reply to referess comments #1', Matthias Stammler, 10 Jun 2017
RC2: 'Review', Anonymous Referee #2, 23 Oct 2017
- AC2: 'Reply to comments #2', Matthias Stammler, 24 Oct 2017

Peer-review completion

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

ED: Reconsider after major revisions (05 Nov 2017) by Lars Pilgaard Mikkelsen

AR by Matthias Stammler on behalf of the Authors (06 Dec 2017) Author's response Manuscript

ED: Referee Nomination & Report Request started (21 Dec 2017) by Lars Pilgaard Mikkelsen

RR by Anonymous Referee #1 (17 Jan 2018)

ED: Publish subject to minor revisions (review by editor) (17 Jan 2018) by Lars Pilgaard Mikkelsen

AR by Matthias Stammler on behalf of the Authors (29 Jan 2018) Author's response Manuscript

ED: Publish subject to minor revisions (review by editor) (08 Feb 2018) by Lars Pilgaard Mikkelsen

ED: Publish as is (12 Feb 2018) by Lars Pilgaard Mikkelsen

ED: Publish as is (13 Feb 2018) by Jakob Mann (Chief editor)

AR by Matthias Stammler on behalf of the Authors (14 Feb 2018)

Short summary

Modern wind turbines all share the ability to turn (pitch) the blades around their main axis. By pitching the blades, the aerodynamic forces created by the blades are controlled. Rolling bearings, consisting of two steel rings and balls that roll on raceways between them, are used to allow pitching. To design pitch drives, it is necessary to know the losses within the bearings. This article describes how such losses have been measured and compares them with calculation models.