Reducing cost uncertainty in the drivetrain design decision with a focus on the operational phase
-
Published:2021-04-23
Issue:2
Volume:6
Page:571-584
-
ISSN:2366-7451
-
Container-title:Wind Energy Science
-
language:en
-
Short-container-title:Wind Energ. Sci.
Author:
Harzendorf Freia, Schelenz RalfORCID, Jacobs Georg
Abstract
Abstract. In order to identify holistically better drivetrain concepts for onshore wind turbine
application, their operational behavior needs to be considered in an early
design phase. In this paper, a validated approach for estimating drivetrain-concept-specific unplanned operational effort and risk based on open-access
data is presented. Uncertain influencing factors are described with
distribution functions. This way, the poor data availability in the early
design phase can be used to give an indication of the concept's choice
influence on the unplanned operational wind turbine behavior. In order to obtain
representative comparisons, a Monte Carlo method is applied. Technical
availability and drivetrain-influenced unplanned operational effort are
defined as evaluation criteria. The latter is constituted by labor,
material and equipment expenses. By calculating the range of fluctuation in
the evaluation criteria mean values, this approach offers an indication
of the inherent risk in the operational phase induced by the drivetrain
concept choice. This approach demonstrates that open-access data or expert estimations are
sufficient for comparing different drivetrain concepts over the operational
phase in an early design stage when using the right methodology. The
approach is applied on the five most common state-of-the-art drivetrain
concepts. The comparison shows that among those concepts the drivetrain
concept without a gearbox and with a permanent magnet synchronous generator
performs the best in terms of absolute drivetrain-influenced unplanned
operational effort over the drivetrain's lifetime as well as in terms of the inherent risk for the
assumptions made. It furthermore makes it possible to give insights into how
the different drivetrain concepts might perform in future applications in
terms of unplanned operational effort. Exemplarily the impacts of higher torque
density in gearboxes, a change to moment bearings and adjusted coil design
in electrically excited generators have been analyzed. This analysis shows that the
superiority of synchronous-generator concepts manifested in historic data is
not entirely certain in future applications. Concluding, this approach will
help to identify holistically better wind turbine drivetrain concepts by being able to
estimate the inherent risks and effort in the operational phase.
Publisher
Copernicus GmbH
Subject
Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment
Reference49 articles.
1. Andrawus, J.: Maintenance optimization for wind turbines, PhD thesis,
Robert Gordon University, 212 pp., Aberdeen, Scottland, 2008. 2. Arabian-Hoseynabadi, H., Tavner, P. J., and Oraee, H.: Reliability
comparison of direct-drive and geared-drive wind turbine concepts, Wind
Energ., 13, 62–73, https://doi.org/10.1002/we.357, 2010. 3. Berger, W.: Major Component Failure Data & Trends, 12 pp., DNV GL, 2016. 4. Bundesverband Wind Energie: Windindustrie in Deutschland 2020, BWE, Berlin, Germany, 252 pp.,
2020. 5. Carroll, J., McDonald, A., Dinwoodie, I., McMillan, D., Revie, M., and
Lazakis, I.: Availability, operation and maintenance costs of offshore wind
turbines with different drive train configurations, Wind Energ., 20,
361–378, https://doi.org/10.1002/we.2011, 2017.
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|