Reducing cost uncertainty in the drivetrain design decision with a focus on the operational phase

Harzendorf, Freia; Schelenz, Ralf; Jacobs, Georg

doi:https://doi.org/10.5194/wes-6-571-2021

Articles | Volume 6, issue 2

https://doi.org/10.5194/wes-6-571-2021

© Author(s) 2021. 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-6-571-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 6, issue 2

Research article

|

23 Apr 2021

Research article |

| 23 Apr 2021

Reducing cost uncertainty in the drivetrain design decision with a focus on the operational phase

Freia Harzendorf, Ralf Schelenz, and Georg Jacobs

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Final revised paper (published on 23 Apr 2021)
Preprint (discussion started on 10 Feb 2020)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Comments', Amir R. Nejad, 12 Apr 2020
RC2: 'Review', Anonymous Referee #2, 16 Oct 2020
- AC2: 'Point by point response to the reviewer 2', Freia Harzendorf, 12 Nov 2020
AC1: 'Point by point response to the reviewer', Freia Harzendorf, 12 Nov 2020

Peer-review completion

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

AR by Freia Harzendorf on behalf of the Authors (10 Dec 2020) Author's response Manuscript

ED: Referee Nomination & Report Request started (29 Dec 2020) by Raimund Rolfes

RR by Anonymous Referee #2 (02 Jan 2021)

RR by Amir R. Nejad (23 Jan 2021)

Suggestions for revision or reasons for rejection

I would like to thank authors for addressing my comments and suggestions.

In response to my comment: "Literature review can be extended, in particular looking at relevant literature addressing total cost of drivetrain or over the life cycle (not only operation) - see for instance this https://doi.org/10.1002/we.2499 for drivetrains on offshore turbines.", authors have responded: " The author intentionally limited the scope of this paper to the comparison on wind turbine drivetrain concepts with regards to unplanned operational drivetrain influenced effort. This uncertain topic has a high degree of complexity and needs a thorough analysis. Therefore, no literature addressing the total cost of drivetrain over the life cycle is added in the literature review. The suggested paper by the revieweris well written, nevertheless it has a completely different focus, dealing with 10 MW offshore drivetrain technologies. Furthermore, it seems a bit strange, that the reviewer suggests a paper written by himself. Nevertheless, the authors did another literature research in the databases ‘web of science’ and ‘scorpus’. They used the keywords “drivetrain” and “wind” in combination. Available literature analysing the drivetrain operational phase mostly deal with condition monitoring or very specific failure mechanisms as well as with different types of loading and dynamics which are not in the scope of this paper. Therefore, no further literature has been added.",

As truly mentioned by authors there are limited works on this subject. With regards to the recommended work in my comment, my suggestion was to compare the results between these two papers. By comparison between the work I mentioned and this research, it is interesting to see that one can reach to different conclusion considering the whole life cycle of drivetrain and for larger turbines.

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ED: Publish subject to technical corrections (26 Jan 2021) by Raimund Rolfes

ED: Publish subject to technical corrections (04 Feb 2021) by Gerard J.W. van Bussel (Chief editor)

AR by Freia Harzendorf on behalf of the Authors (15 Feb 2021) Manuscript

Short summary

Making wind turbines more reliable over their lifetime is an important goal for improving wind turbine technology. The wind turbine drivetrain has a major influence on turbine reliability. This paper presents an approach that will help to identify holistically better drivetrain concepts in an early product design phase from an operational perspective as it is able to estimate and assess drivetrain-concept-specific inherent risks in the operational phase.