Wind turbine operational method
AssigneeGamesa Innovation & Technology, S.L.
InventorErik Nim
Life of this patent
Estimating the term…
Abstract
Operation method for a variable speed wind turbine which comprises control methods for blade pitch in cases of extreme gusts of wind, characterized by the fact that it is comprised of the following steps: a) detection of the presence of an extreme gust of wind; b) performance of a sudden increase in pitch within the range of 6 to 14 degrees at the maximum speed permitted by the wind turbine blade pitch control mechanisms. The method also includes an additional step; c) vary the generator speed to avoid an increased acceleration of the generator which could make a subsequent step b) necessary.
Claims9
A method for the operation of a variable-speed wind turbine having pitch control means in cases of an extreme operating wind gust, wherein the method comprises the steps of:
- a) detecting the presence of an extreme operating wind gust according to the generator acceleration when the generator acceleration is higher than a predetermined value in the range of 10% to 30% of the generator nominal acceleration, GNS/sec, during a minimum predetermined period of time in the range of 0.2 sec to 0.6 sec;
- and
- b) performing a sudden increase of the pitch angle in the range of 6 to 14 degrees at the maximum pitch rate allowed by the wind turbine pitch control means.
Dependencies are inferred from the claim text.