1
Robert William Delmerico, Mark Edward Cardinal, Kirk Gee Pierce: System and method for operating a wind farm under high wind speed conditions. General Electric Company, Fletcher Yoder, November 20, 2007: US07298059 (36 worldwide citation)

A system and method of operating a wind farm, having multiple wind turbine generators, at high wind speeds is provided. Wind speeds at individual wind turbine generators are monitored and a signal is transmitted from the wind turbine generators to a wind farm control system based on the monitored wi ...


2
Lawrence Donald Willey, John Noel Cunningham, Eric Gebhardt, Ulrich Uphues, William Edwin Holley, Kirk Gee Pierce: Methods and apparatus for controlling rotational speed of a rotor. General Electric Company, Armstrong Teasdale, April 1, 2008: US07352075 (33 worldwide citation)

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 o ...


3
Emilian Mieczyslaw Moroz, David Lawrence LeMieux, Kirk Gee Pierce: Methods and apparatus for twist bend coupled (TCB) wind turbine blades. General Electric Company, James E McGinness Esq, Armstrong Teasdale, October 10, 2006: US07118338 (29 worldwide citation)

A method for controlling a wind turbine having twist bend coupled rotor blades on a rotor mechanically coupled to a generator includes determining a speed of a rotor blade tip of the wind turbine, measuring a current twist distribution and current blade loading, and adjusting a torque of a generator ...


4
Emilian Mieczyslaw Moroz, Kirk Gee Pierce: Methods and apparatus for reduction of asymmetric rotor loads in wind turbines. General Electric Company, James E McGinness Esq, Armstrong Teasdale, October 10, 2006: US07118339 (23 worldwide citation)

A method for reducing load and providing yaw alignment in a wind turbine includes measuring displacements or moments resulting from asymmetric loads on the wind turbine. These measured displacements or moments are used to determine a pitch for each rotor blade to reduce or counter asymmetric rotor l ...


5
Corneliu Barbu, Ralph Teichmann, Aaron Avagliano, Leonardo Cesar Kammer, Kirk Gee Pierce, David Samuel Pesetsky, Peter Gauchel: Method and apparatus for wind turbine braking. General Electric Company, Armstrong Teasdale, February 10, 2009: US07488155 (18 worldwide citation)

A method for braking a wind turbine including at least one rotor blade coupled to a rotor. The method includes selectively controlling an angle of pitch of the at least one rotor blade with respect to a wind direction based on a design parameter of a component of the wind turbine to facilitate reduc ...


6
Kirk Gee Pierce, Robert Peter Slack: Methods and apparatus for balancing a rotor. General Electric Company, Armstrong Teasdale, October 14, 2008: US07437264 (18 worldwide citation)

A method for balancing a rotor of a rotary machine, wherein the rotor includes at least two rotor blades and a rotor shaft, includes receiving at least one measurement of either a load, an acceleration, or a displacement that pertains to at least one bending moment acting on the rotor shaft, determi ...


7
Robert William Delmerico, Mark Edward Cardinal, Kirk Gee Pierce: Wind farm power ramp rate control system and method. General Electric Company, Fletcher Yoder, March 16, 2010: US07679215 (17 worldwide citation)

A system and method for controlling power ramp rate of a wind farm is provided. The wind farm includes a plurality of wind turbine generators and a wind farm control system. The wind farm control system is operable to monitor rate of change of collective power output of the wind turbine generators, ...


8
Emilian Mieczyslaw Moroz, Kirk Gee Pierce: Method and apparatus for reducing rotor blade deflections, loads, and/or peak rotational speed. General Electric Company, James E McGinness Esq, Armstrong Teasdale, October 17, 2006: US07121795 (15 worldwide citation)

A method for reducing at least one of loads, deflections of rotor blades, or peak rotational speed of a wind turbine includes storing recent historical pitch related data, wind related data, or both. The stored recent historical data is analyzed to determine at least one of whether rapid pitching is ...


9
Danian Zheng, Mohamed Ali, Kirk Gee Pierce, Vasanth Kothnur: Vibration reduction system for a wind turbine. General Electric Company, Cantor Colburn, May 22, 2007: US07220104 (14 worldwide citation)

A wind turbine includes a tower, a nacelle supported at an upper end of a tower, a rotor having at least one blade and being arranged at the nacelle, and a vibration load reduction system disposed at either the tower or the nacelle. The vibration load reduction system includes a base, at least two c ...


10
Bharat Sampathkumaran Bagepalli, Patrick Lee Jansen, Gary R Barnes, Thomas Frank Fric, James Patrick Francis Lyons, Kirk Gee Pierce, William Edwin Holley, Corneliu Barbu: Methods and apparatus for controlling rotary machines. General Electric Company, James McGinness Esq, Armstrong Teasdale, September 1, 2009: US07581921 (12 worldwide citation)

A control system for a rotary machine is provided. The rotary machine has at least one rotating member and at least one substantially stationary member positioned such that a clearance gap is defined between a portion of the rotating member and a portion of the substantially stationary member. The c ...



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