The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 20, 2018

Filed:

Oct. 21, 2015
Applicants:

Pranav Agarwal, Guilderland, NY (US);

Govardhan Ganireddy, Bangalore, IN;

Mark Edward Cardinal, Altamont, NY (US);

Venkata Krishna Vadlamudi, Bangalore, IN;

Inventors:

Pranav Agarwal, Guilderland, NY (US);

Govardhan Ganireddy, Bangalore, IN;

Mark Edward Cardinal, Altamont, NY (US);

Venkata Krishna Vadlamudi, Bangalore, IN;

Assignee:

GENERAL ELECTRIC COMPANY, Schenectady, NY (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03D 9/00 (2016.01); H02P 9/04 (2006.01); F03D 7/02 (2006.01); F03D 1/06 (2006.01); B64C 11/00 (2006.01);
U.S. Cl.
CPC ...
F03D 7/0248 (2013.01); F03D 1/0675 (2013.01); F03D 9/003 (2013.01);
Abstract

A wind turbine includes wind turbine blades, a wind turbine rotor coupled to the wind turbine blades, a wind turbine generator coupled to the wind turbine rotor, a wind turbine converter coupled to the wind turbine generator, a controllable brake comprising one or more sources of controllable rotor torque adjustment for providing a first level of torque adjustment, a discrete brake for more coarsely providing a second level of torque adjustment, and a controller programmed for responding to a deceleration event by determining a required torque adjustment for braking, determining a sequence of applying the controllable brake and the discrete brake for driving a combination of the first and second levels of torque adjustment towards the required torque adjustment, and providing control signals for decelerating the wind turbine.


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