General Electric Company

Thomas Siebers

Henk-Jan Kooijman

Donald M Rogers

Frank Theodoor Ormel

Ryan Michael LeClair

Peter Alan Gregg

Ulrich Uphues

Craig Leonard Christenson

Henning Luetze

Rainer Arelt

Christopher James Winslow

Thomas P Schmitt

Clinton L Williams

Saskia G Honoff

Alexander Donth

Clement Faucherre

Frank T Ormel

Peter Gregg

Ryan Leclair

A method for operating a wind turbine having at least one blade includes determining an ambient air operating envelope and controlling a power output of the wind turbine at least partially based on the determined ambient air operating envelope. Determining an ambient air operating envelope includes measuring at least one of an ambient air temperature, an ambient air pressure, an ambient air humidity, and wind turbine power output. The method also includes comparing at least one of a measured ambient air temperature, a measured ambient air humidity and a measured ambient air pressure to predetermined ambient air temperature, pressure and humidity values. The method further includes referencing the predetermined ambient air temperature, pressure and humidity values to at least one operational parameter of the wind turbine. The method also includes determining if an existing wind turbine power output is within a range associated with the determined ambient air operating envelope.

Methods for operating a wind turbine

A method for controlling a wind energy system is provided wherein the method comprises determining the effective wind speed taking into account the load on the rotor blades of said wind energy system exerted by the wind is provided. A computer-readable medium is provided that provides instructions which when executed by a computing platform cause the computing platform to perform operations wherein the operations include the method according to embodiments described herein. Further, a wind energy system having a calculation unit adapted for calculating the effective wind speed by taking into account the load on the rotor blades of said wind energy system exerted by the wind is provided. Further, a wind speed sensor free wind energy system having a generator for generating electric energy and a controller for shutting down and/or starting the electric energy generation in dependence of the wind speed is provided.

Method of controlling a wind energy system and wind speed sensor free wind energy system

A wind turbine and system for controlling a wind turbine using a nosecone mounted metrology system is disclosed. The wind turbine comprises at least one wind sensor for determining at least one wind characteristic. The wind sensor is mounted on a boom and located at a predetermined distance outward from the wind turbine nosecone.

Wind turbine metrology system

The present patent application concerns an apparatus for cleaning an outer surface of a rotor blade of a wind turbine, the apparatus comprising a first frame and a cleaning device, the cleaning device being adapted to conform to the outer surface and connected to the first frame, wherein the apparatus is adapted to be slidably positioned on the outer surface of the rotor blade, to slide along, and to be pressed onto the outer surface. Further, it concerns an apparatus for cleaning a leading edge of a rotor blade of a wind turbine, the apparatus comprising a first frame and a cleaning device, the cleaning device being adapted to conform to the leading edge and being connected to the first frame, wherein the apparatus is adapted to be slidably positioned on the leading edge of the rotor blade, to slide along and to be pressed onto the leading edge during standstill of a wind rotor comprising the rotor blade. Finally, it concerns a rotor blade of a wind turbine comprising an apparatus for cleaning a leading edge of the rotor blade, wherein the apparatus is mounted on said rotor blade, the apparatus comprising a first frame and a cleaning device, the cleaning device being adapted to conform to the leading edge and being attached to the first frame, wherein the apparatus is adapted to be slidably positioned on the leading edge of the rotor blade, to slide along and to be pressed onto the leading edge during rotation of a wind rotor comprising the rotor blade.

Wiper for wind turbine blades

A method for re-calibrating an anemometer of a wind turbine is provided, the method comprising the steps of obtaining pairs of measured values of wind speed and a wind-speed dependent turbine variable; comparing said measured value pairs to pairs of wind speed and the turbine variable obtained from an expected turbine variable curve of the wind turbine to determine a difference between a measured wind speed value and an expected wind speed value for a given turbine variable value; and adjusting a calibration function of said anemometer on the basis of said determined difference.

Anemometer calibration method and wind turbine

A technique for correcting measurement error in data produced by a nacelle-based anemometer and for determining free stream wind speed for a wind turbine involves ascertaining parameters related to the wind turbine and the operation thereof, and using the parameters and data from the nacelle based anemometer as inputs to an algorithm to provide for determination of corrected wind speed data.

Method, system and computer program product for nacelle wind speed correction

Growing community of inventors

Neuenkirchen, Germany

Thomas Siebers