Wind turbine operation
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United States of America Patent
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Feb 23, 2021
Grant Date -
Nov 14, 2019
app pub date -
May 10, 2019
filing date -
May 11, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
Methods of operating a variable speed wind turbine as a function of wind speed are described. The wind turbine has a rotor with a plurality of blades and a generator. The generator has a design rotor speed which varies so as to follow a theoretical generator rotor rotational speed curve describing the rotational speed of the rotor as a function of wind speed. The method comprises determining an erosion risk condition of the blades, determining erosion damage of one or more of the blades accumulated over time and changing the rotor rotational speed from the design rotor speed as a function of the determined erosion risk condition and the determined accumulated erosion damage. Wind turbines configured to carry out such methods are also described.
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