Prime-mover dynamo plants – Electric control – Fluid-current motors
Reexamination Certificate
2009-03-16
2010-12-14
Patel, T C (Department: 2839)
Prime-mover dynamo plants
Electric control
Fluid-current motors
C290S055000
Reexamination Certificate
active
07851934
ABSTRACT:
The invention relates to a method for controlling a wind turbine connected to the utility grid comprising steps of detecting a fault of the utility grid, and controlling one or more rotor blades in a fault mode wherein said one or more rotor blades are pitched in order to stabilize the rotor speed within an over speed range. The invention also relates to a wind turbine and a wind park comprising at least two wind turbines.
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International Searach Report, Mar. 7, 2008 (3 pages).
International Preliminary Report on Patentability & Written Opinion of the International Searching Authority; PCT/DK2007/000405; Mar. 17, 2009; 6 pages.
Cuevas Pedro J
Patel T C
Vestas Wind Systems A/S
Wood Herron & Evans LLP
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