Corneliu Barbu

US Patent:

7342323, Mar 11, 2008

Filed:

Sep 30, 2005

Appl. No.:

11/239792

Inventors:

Aaron Avagliano - Clifton Park NY, US
James Patrick Francis Lyons - Niskayuna NY, US
Corneliu Barbu - Guilderland NY, US
Shashikanth Suryanarayanan - Mumbai, IN

Assignee:

General Electric Company - Niskayuna NY

International Classification:

F03D 9/00
H02P 9/04

US Classification:

290 55, 290 44

Abstract:

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.

US Patent:

7423352, Sep 9, 2008

Filed:

Nov 15, 2007

Appl. No.:

11/940967

Inventors:

Shashikanth Suryanarayanan - Mumbai, IN
Aaron Avagliano - Clifton Park NY, US
Corneliu Barbu - Guilderland NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

F03D 9/00
H02P 9/04

US Classification:

290 55, 290 44

Abstract:

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.

US Patent:

7488155, Feb 10, 2009

Filed:

Nov 18, 2005

Appl. No.:

11/282127

Inventors:

Corneliu Barbu - Laguna Hills CA, US
Ralph Teichmann - Nishkayuna NY, US
Aaron Avagliano - Houston TX, US
Leonardo Cesar Kammer - Niskayuna NY, US
Kirk Gee Pierce - Simpsonville SC, US
David Samuel Pesetsky - Greenville SC, US
Peter Gauchel - Muenster, DE

Assignee:

General Electric Company - Schenectady NY

International Classification:

F03D 7/04

US Classification:

416 1, 416 31, 416155

Abstract:

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.

US Patent:

7581921, Sep 1, 2009

Filed:

Jun 19, 2006

Appl. No.:

11/424951

Inventors:

Bharat Sampathkumaran Bagepalli - Niskayuna NY, US
Patrick Lee Jansen - Scotia NY, US
Gary R. Barnes - Delanson NY, US
Thomas Frank Fric - Greer SC, US
James Patrick Francis Lyons - Niskayuna NY, US
Kirk Gee Pierce - Simpsonville SC, US
William Edwin Holley - Greer SC, US
Corneliu Barbu - Guilderland NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F01D 11/22

US Classification:

415 14, 415132

Abstract:

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.

US Patent:

7909575, Mar 22, 2011

Filed:

Jun 25, 2007

Appl. No.:

11/823017

Inventors:

Corneliu Barbu - Saratoga Springs NY, US
Anurag Gupta - Clifton Park NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

F03D 7/04

US Classification:

416 61, 416 1, 416 41, 416 42, 416146 R, 416231 R

Abstract:

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.

US Patent:

7950901, May 31, 2011

Filed:

Aug 13, 2007

Appl. No.:

11/891870

Inventors:

Corneliu Barbu - Saratoga Springs NY, US
Parag Vyas - Munich, DE

Assignee:

General Electric Company - Niskayuna NY

International Classification:

F03D 7/04

US Classification:

416 1, 416 41, 416 61, 416117, 415 1, 415 43, 415 48, 415147, 415905, 415908

Abstract:

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.

US Patent:

20060066111, Mar 30, 2006

Filed:

Sep 30, 2004

Appl. No.:

10/955732

Inventors:

Shashikanth Suryanarayanan - Mumbai, IN
Aaron Avagliano - Clifton Park NY, US
Corneliu Barbu - Guilderland NY, US

International Classification:

F03D 9/00
H02P 9/04

US Classification:

290044000

Abstract:

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.