Prime-mover dynamo plants – Electric control – Fluid-current motors
Reexamination Certificate
2011-03-08
2011-03-08
Ponomarenko, Nicholas (Department: 2839)
Prime-mover dynamo plants
Electric control
Fluid-current motors
C290S055000, C416S001000
Reexamination Certificate
active
07902686
ABSTRACT:
A variable speed wind turbine connected to a utility grid includes a rotor, having at least one blade, a drive train connected to the rotor, the drive train includes a selection of at least one gear box, and at least one electrical generator, a measuring arrangement establishing at least one rotational speed signal of the drive train, and at least one wind turbine power controller connected to the at least one generator and the utility grid. Furthermore the wind turbine includes at least one resonant controller modifying a power reference value in response to the at least one rotational speed signal. A resonant control system, a method of operating a variable speed wind turbine, use of resonant control system and use of a method in a variable speed wind turbine are also contemplated.
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International Search Report; PCT/DK2008/000200; Mar. 11, 2009; 3 pages.
Andersen Gert Karmisholt
Bendixen Flemming Buus
Larsen Kim Brondum
Ponomarenko Nicholas
St. Onge Steward Johnston & Reens LLC
Vestas Wind Systems A/S
LandOfFree
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