Abstract
Abstract. 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.
Subject
Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment
Cited by
66 articles.
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