Extending the life of wind turbine blade leading edges by reducing the tip speed during extreme precipitation events
<p>Impact fatigue caused by collision with rain droplets, hail stones and other airborne particles, also known as leading-edge erosion, is a severe problem for wind turbine blades. Each impact on the leading edge adds an increment to the accumulated damage in the material. After a number of...
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Copernicus Publications
2018-10-01
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Series: | Wind Energy Science |
Online Access: | https://www.wind-energ-sci.net/3/729/2018/wes-3-729-2018.pdf |
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doaj-ce23868eef964df1a1385d2988fe5bec2020-11-24T22:50:37ZengCopernicus PublicationsWind Energy Science2366-74432366-74512018-10-01372974810.5194/wes-3-729-2018Extending the life of wind turbine blade leading edges by reducing the tip speed during extreme precipitation eventsJ. I. Bech0C. B. Hasager1C. Bak2Department of Wind Energy, Technical University of Denmark, Roskilde, 4000, DenmarkDepartment of Wind Energy, Technical University of Denmark, Roskilde, 4000, DenmarkDepartment of Wind Energy, Technical University of Denmark, Roskilde, 4000, Denmark<p>Impact fatigue caused by collision with rain droplets, hail stones and other airborne particles, also known as leading-edge erosion, is a severe problem for wind turbine blades. Each impact on the leading edge adds an increment to the accumulated damage in the material. After a number of impacts the leading-edge material will crack. This paper presents and supports the hypothesis that the vast majority of the damage accumulated in the leading edge is imposed at extreme precipitation condition events, which occur during a very small fraction of the turbine's operation life. By reducing the tip speed of the blades during these events, the service life of the leading edges significantly increases from a few years to the full expected lifetime of the wind turbine. This life extension may cost a negligible reduction in annual energy production (AEP) in the worst case, and in the best case a significant increase in AEP will be achieved.</p>https://www.wind-energ-sci.net/3/729/2018/wes-3-729-2018.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
J. I. Bech C. B. Hasager C. Bak |
spellingShingle |
J. I. Bech C. B. Hasager C. Bak Extending the life of wind turbine blade leading edges by reducing the tip speed during extreme precipitation events Wind Energy Science |
author_facet |
J. I. Bech C. B. Hasager C. Bak |
author_sort |
J. I. Bech |
title |
Extending the life of wind turbine blade leading edges by reducing the tip speed during extreme precipitation events |
title_short |
Extending the life of wind turbine blade leading edges by reducing the tip speed during extreme precipitation events |
title_full |
Extending the life of wind turbine blade leading edges by reducing the tip speed during extreme precipitation events |
title_fullStr |
Extending the life of wind turbine blade leading edges by reducing the tip speed during extreme precipitation events |
title_full_unstemmed |
Extending the life of wind turbine blade leading edges by reducing the tip speed during extreme precipitation events |
title_sort |
extending the life of wind turbine blade leading edges by reducing the tip speed during extreme precipitation events |
publisher |
Copernicus Publications |
series |
Wind Energy Science |
issn |
2366-7443 2366-7451 |
publishDate |
2018-10-01 |
description |
<p>Impact fatigue caused by collision with rain droplets, hail stones
and other airborne particles, also known as leading-edge erosion, is a severe
problem for wind turbine blades. Each impact on the leading edge adds an
increment to the accumulated damage in the material. After a number of
impacts the leading-edge material will crack. This paper presents and
supports the hypothesis that the vast majority of the damage accumulated in
the leading edge is imposed at extreme precipitation condition events, which
occur during a very small fraction of the turbine's operation life. By
reducing the tip speed of the blades during these events, the service life of
the leading edges significantly increases from a few years to the full
expected lifetime of the wind turbine. This life extension may cost a
negligible reduction in annual energy production (AEP) in the worst case, and
in the best case a significant increase in AEP will be achieved.</p> |
url |
https://www.wind-energ-sci.net/3/729/2018/wes-3-729-2018.pdf |
work_keys_str_mv |
AT jibech extendingthelifeofwindturbinebladeleadingedgesbyreducingthetipspeedduringextremeprecipitationevents AT cbhasager extendingthelifeofwindturbinebladeleadingedgesbyreducingthetipspeedduringextremeprecipitationevents AT cbak extendingthelifeofwindturbinebladeleadingedgesbyreducingthetipspeedduringextremeprecipitationevents |
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