METHODS FOR LUBRICATING A PITCH BEARING OF A WIND TURBINE
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United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Oct 3, 2024
filing date -
Oct 3, 2024
priority date (Note) -
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Abstract
The present disclosure relates to methods (100, 200) for lubricating a pitch bearing (72) connecting a blade (22) and a hub (20) of a wind turbine (10). A method (100) comprises determining (110) that lubricating the pitch bearing (72) is to be carried out; determining (120) a top limit for a thrust gradient, the thrust gradient being a derivative of thrust with respect to time; determining (130) a pitch rate for lubricating the pitch bearing (72) based at least partially on the top limit for the thrust gradient, and pitching (140) the wind turbine blade (22) at the determined pitch rate for lubricating the pitch bearing (72) such that the top limit for the thrust gradient is not exceeded.
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