William W Holley, Age 7427 Pearl St, Ware Shoals, SC 29692

7352075, Apr 1, 2008

Mar 6, 2006

11/368939

Lawrence Donald Willey - Simpsonville SC, US
John Noel Cunningham - Roanoke VA, US
Eric Gebhardt - Simpsonville SC, US
Ulrich Uphues - Hannover, DE
William Edwin Holley - Greer SC, US
Kirk Gee Pierce - Simpsonville SC, US

General Electric Company - Schenectady NY

F03D 7/00

290 44, 290 55

A method for controlling a rotational speed of a rotor having at least one rotor blade, a rotor shaft, and an electrical generator coupled thereto. The method includes controlling a torque of the rotor shaft by controlling a torque of the electrical generator, alternating between changing an angle of pitch of the at least one rotor blade and maintaining the angle of pitch of the at least one rotor blade substantially constant, and maintaining a substantially constant rotational speed of the rotor during variable wind speeds above a predetermined rated wind speed.

2016030, Oct 20, 2016

Dec 9, 2013

15/101001

Danian ZHENG - Greenville SC, US
Xiongzhe HUANG - Shanghai, CN
William Edwin HOLLEY - Greenville SC, US
Conner B. SHANE - Niskayuna NY, US
Raveendra PENMATSA - Bangalore, Karnataka, IN
Timothy Botsford CRIBBS - Salem VA, US
- Schenectady NY, US

F03D 7/02
F03D 9/00
G05B 19/042
F03D 7/04

A system and method for reducing oscillation loads of a wind turbine induced by high turbulence and/or combined with other environmental conditions are provided. The method includes determining at least one wind parameter at the wind turbine; monitoring an operating condition of the wind turbine; determining, by a processor, a variance of at least one of the monitored operating condition or a plurality of the wind parameters, wherein the variance is indicative of an oscillation occurring at one or more wind turbine components; determining, by a processor, an operating set point based on the variance; and, operating the wind turbine based on the operating set point when the variance indicates that the oscililation has a frequency within a certain frequency band so as to modify the frequency, wherein the modified frequency is outside of the frequency band and reduces oscillation loads occurring at the one or more wind turbine components.