General Electric Company

Corneliu Barbu

Shashikanth Suryanarayanan

James Patrick Francis Lyons

Bharat S Bagepalli

Patrick Lee Jansen

Ralph Teichmann

James Patrick Lyons

Aaron John Avagliano

Kirk Gee Pierce

Anurag Gupta

Leonardo Cesar Kammer

Parag Vyas

Thomas Frank Fric

William E Holley

Gary Randall Barnes

David Samuel Pesetsky

Peter Gauchel

Shashikanth Suryanaryanan

A system and method provide a proactive mechanism to control pitching of the blades of a wind turbine to compensate for rotor imbalance during normal operation by pitching the blades individually or asymmetrically, based on turbulent wind gust measurements in front of the rotor, determined before it reaches the rotor blades.

System and method for loads reduction in a horizontal-axis wind turbine using upwind information

A wind turbine blade assembly includes at least one local load sensor disposed on and/or within a surface of the wind turbine blade and at least one active flow modification device disposed on and/or within a surface of the wind turbine blade and configured to alter the aerodynamics of the wind turbine blade in response to real time local load sensor measurements such that a difference between a current angle of attack and an optimum angle of attack on the wind turbine blade is substantially minimized.

Power loss reduction in turbulent wind for a wind turbine using localized sensing and control

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 control system includes at least one clearance gap dimension measurement apparatus and at least one clearance gap adjustment assembly. The adjustment assembly is coupled in electronic data communication with the measurement apparatus. The control system is configured to process a clearance gap dimension signal and modulate the clearance gap dimension.

Methods and apparatus for controlling rotary machines

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 reducing a force induced into the wind turbine component as a result of braking.

Method and apparatus for wind turbine braking

A vibration damping technique for a wind turbine system is described. The wind turbine system includes a vibration damper, which provides a variable signal to control torque produced by a generator of the wind turbine system. The variable signal is based on generator speed and has a first local peak value based on a resonant frequency of tower side-to-side oscillation.

Vibration damping method for variable speed wind turbines

A method for controlling power output of a wind turbine generator in response to an anticipated change in wind speed is provided. The method includes sensing wind speed at a desired distance from the wind turbine generator in a direction of the wind. The method further includes controlling pitch of a blade of the wind turbine generator based upon sensed transient wind speed in advance of a change in wind speed at the wind turbine generator.

System and method for upwind speed based control of a wind turbine

Vibration damping system and method for variable speed wind turbines

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Guilderland, NY, United States of America

Corneliu Barbu