Measuring and testing – Fluid flow direction – Using a fluid actuated alignment device
Reexamination Certificate
2006-12-13
2009-02-10
Patel, Harshad (Department: 2855)
Measuring and testing
Fluid flow direction
Using a fluid actuated alignment device
C073S196000, C416S039000, C416S041000
Reexamination Certificate
active
07487673
ABSTRACT:
A method for ice detection for a wind turbine is provided. The method includes providing an ice condition threshold parameter adapted for distinguishing a condition during which icing may occur and a condition during which icing may not occur, measuring a wind velocity with a first anemometer, wherein the first anemometer being of a first type, measuring a wind velocity with a second anemometer, wherein the second anemometer being of a second type, and wherein the second type is different from the first type, evaluating, for a condition during which icing may occur, a deviation of the wind velocity measured with the first anemometer and the wind velocity measured with the second anemometer, and determine whether the deviation exceeds a limit value based on a calibration conducted under a condition during which icing may not occur.
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Hoffrogge Christian
Honekamp Thorsten
Ormel Frank
GE Global Patent Operation
General Electric Company
Kirkland, III Freddie
Patel Harshad
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