Assessment of a rotor blade extension retrofit as a supplement to the lifetime extension of wind turbines

Rosemeier, Malo; Saathoff, Matthias

doi:https://doi.org/10.5194/wes-5-897-2020

Articles | Volume 5, issue 3

https://doi.org/10.5194/wes-5-897-2020

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

Special issue:

Wind Energy Science Conference 2019

https://doi.org/10.5194/wes-5-897-2020

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

Articles | Volume 5, issue 3

Research article

|

14 Jul 2020

Research article |

| 14 Jul 2020

Assessment of a rotor blade extension retrofit as a supplement to the lifetime extension of wind turbines

Malo Rosemeier and Matthias Saathoff

Download

Final revised paper (published on 14 Jul 2020)
Preprint (discussion started on 17 Jan 2020)

Interactive discussion

Status: closed

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

- Printer-friendly version

- Supplement

RC1: 'Assessment of a rotor blade extension retroﬁt as a supplement to the lifetime extension of wind turbines', Anonymous Referee #1, 22 Jan 2020
- AC1: 'Response to interactive comments RC1 and RC2', Malo Rosemeier, 14 Apr 2020
RC2: 'Assessment of a rotor blade extension retrofit as a supplement to the lifetime extension of wind turbines', Anonymous Referee #2, 21 Feb 2020
- AC1: 'Response to interactive comments RC1 and RC2', Malo Rosemeier, 14 Apr 2020
AC1: 'Response to interactive comments RC1 and RC2', Malo Rosemeier, 14 Apr 2020

Peer-review completion

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

AR by Malo Rosemeier on behalf of the Authors (13 May 2020) Author's response Manuscript

ED: Publish as is (05 Jun 2020) by Raimund Rolfes

ED: Publish as is (06 Jun 2020) by Gerard J.W. van Bussel (Chief editor)

AR by Malo Rosemeier on behalf of the Authors (06 Jun 2020)

Short summary

A huge number of wind turbines have reached their designated lifetime of 20 years. Most of the turbines installed were overdesigned. In practice, these turbines could potentially operate longer to increase the energy yield. For the use case turbine considered in this work, a simple lifetime extension of 8.7 years increases the energy yield by 43.5 %. When the swept rotor area is increased by means of a blade tip extension, the yield is increased by an additional 2.3 %.