Wind turbine anemometry compensation

Measuring and testing – Fluid flow direction

Reexamination Certificate

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C073S170050

Reexamination Certificate

active

07861583

ABSTRACT:
A system for estimating a freestream wind characteristic for a wind turbine having a rotor includes estimating a nacelle wind speed for the turbine; determining, from the estimated nacelle wind speed, at least one angular position of the rotor for measuring a nacelle wind characteristic for the turbine; and measuring the nacelle wind characteristic at the determined angular position of the rotor.

REFERENCES:
patent: 6993965 (2006-02-01), Yoshida
patent: 7059833 (2006-06-01), Stiesdal et al.
patent: 7086835 (2006-08-01), Yoshida
patent: 7244100 (2007-07-01), Yoshida
patent: 7311000 (2007-12-01), Smith et al.
patent: 7347668 (2008-03-01), Pedersen
patent: 7363808 (2008-04-01), Ormel et al.
patent: 7420289 (2008-09-01), Wang et al.
patent: 7566982 (2009-07-01), Voss
patent: 2007/0125165 (2007-06-01), Ormel et al.
“Power Performance Measurements Of Electricity Producing Wind Turbines,” International Electrotechnical Commission Standard “IEC 61400-12”.

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