Fluid reaction surfaces (i.e. – impellers) – Method of operation
Reexamination Certificate
2009-06-08
2011-12-06
Look, Edward (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Method of operation
C416S061000, C416S500000
Reexamination Certificate
active
08070437
ABSTRACT:
A method for damping edgewise oscillations in one or more blades of a wind turbine includes the steps of detecting if one or more of the blades oscillates edgewise during operation of the wind turbine, and substantially cyclically generating a pitch angle difference between at least two of the blades. Further provided is an active stall controlled wind turbine and use hereof.
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Nielsen Thomas Steiniche Bjertrup
Pedersen Bo Juul
Spruce Christopher John
Ellis Ryan
Look Edward
Vestas Wind Systems A/S
Wood Herron & Evans L.L.P.
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