Patents by Inventor Renjith Viripullan

Renjith Viripullan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9018787
    Abstract: In one aspect, embodiments of a method of controlling a power rating of a wind turbine are described. One embodiment of the method comprises retrieving, by a computing device, one or more preset values from a memory, wherein the one or more preset values include at least an initial torque setpoint for a wind turbine; determining, by the computing device, an adjusted torque setpoint for the wind turbine based at least in part on one or more operating conditions received from one or more measurement devices associated with the wind turbine; and adjusting a real power output rating of the wind turbine based on the determined adjusted torque setpoint. In one aspect, the computing device can be a controller for the wind turbine.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: April 28, 2015
    Assignee: General Electric Company
    Inventors: Devendra Shashikant Dange, Thomas Frank Fric, Edward Wayne Hardwicke, Jr., Renjith Viripullan Kekkaroth, Noah Pennington
  • Publication number: 20130277970
    Abstract: In one aspect, embodiments of a method of controlling a power rating of a wind turbine are described. One embodiment of the method comprises retrieving, by a computing device, one or more preset values from a memory, wherein the one or more preset values include at least an initial torque setpoint for a wind turbine; determining, by the computing device, an adjusted torque setpoint for the wind turbine based at least in part on one or more operating conditions received from one or more measurement devices associated with the wind turbine; and adjusting a real power output rating of the wind turbine based on the determined adjusted torque setpoint. In one aspect, the computing device can be a controller for the wind turbine.
    Type: Application
    Filed: April 24, 2012
    Publication date: October 24, 2013
    Inventors: Devendra Shashikant Dange, Thomas Frank Fric, Edward Wayne Hardwicke, JR., Renjith Viripullan Kekkaroth, Noah Pennington
  • Patent number: 8328514
    Abstract: A method for controlling operation of a wind turbine is described. The wind turbine includes a rotor having a plurality of rotor blades. The method includes measuring an atmospheric condition associated with the environment surrounding the wind turbine, providing the measured atmospheric condition to a processor, and determining at least one monitor set point limit based at least partially on the measured atmospheric condition. The method also includes applying the at least one monitor set point limit to wind turbine operation.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: December 11, 2012
    Assignee: General Electric Company
    Inventors: Renjith Viripullan, Thomas Edenfeld, Vijendra Singh Chauhan, Lothar Wittekind, Udo Ahmann
  • Patent number: 8212373
    Abstract: Method for increasing energy capture in wind plants includes providing a plurality of wind turbines having a variable speed control system including an initial rotational speed set point value which is a maximum rotational speed set point for wind turbines. Method includes obtaining at least two measured operational parameters from one or more sensors and comparing measured operational parameters to mechanical load of turbine. If mechanical load of turbine is decreased as a result of measured operational parameters, a speed control adjustment method is activated. Speed control adjustment method includes determining an adjusted rotational speed set point greater than initial rotational speed set point value in response to at least two measured and compared operational parameters and configuring control system with adjusted rotational speed set point where adjusted rotational speed set point increases maximum rotational speed set point of wind turbines.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: July 3, 2012
    Assignee: General Electric Company
    Inventors: Lothar Wittekind, Renjith Viripullan, Martin Staedler
  • Publication number: 20120091714
    Abstract: Method for increasing energy capture in wind plants includes providing a plurality of wind turbines having a variable speed control system including an initial rotational speed set point value which is a maximum rotational speed set point for wind turbines. Method includes obtaining at least two measured operational parameters from one or more sensors and comparing measured operational parameters to mechanical load of turbine. If mechanical load of turbine is decreased as a result of measured operational parameters, a speed control adjustment method is activated. Speed control adjustment method includes determining an adjusted rotational speed set point greater than initial rotational speed set point value in response to at least two measured and compared operational parameters and configuring control system with adjusted rotational speed set point where adjusted rotational speed set point increases maximum rotational speed set point of wind turbines.
    Type: Application
    Filed: December 2, 2011
    Publication date: April 19, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Lothar WITTEKIND, Renjith VIRIPULLAN, Martin STAEDLER
  • Patent number: 8093737
    Abstract: A method for operating a wind turbine. The method includes providing a wind turbine having a variable speed control system, the control system having an initial rotational speed set point. At least two operational parameters are obtained from one or more sensors. An adjusted rotational speed set point greater than the initial rotational speed set point is determined in response to the operational parameter. The control system is configured with the adjusted rotational speed set point. A wind turbine and wind turbine plant are also disclosed.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: January 10, 2012
    Assignee: General Electric Company
    Inventors: Lothar Wittekind, Renjith Viripullan, Martin Staedler
  • Publication number: 20110064573
    Abstract: A method for controlling operation of a wind turbine is described. The wind turbine includes a rotor having a plurality of rotor blades. The method includes measuring an atmospheric condition associated with the environment surrounding the wind turbine, providing the measured atmospheric condition to a processor, and determining at least one monitor set point limit based at least partially on the measured atmospheric condition. The method also includes applying the at least one monitor set point limit to wind turbine operation.
    Type: Application
    Filed: September 11, 2009
    Publication date: March 17, 2011
    Inventors: Renjith Viripullan, Thomas Edenfeld, Vijendra Singh Chauhan, Lothar Wittekind, Udo Ahmann
  • Publication number: 20090295160
    Abstract: A method for operating a wind turbine. The method includes providing a wind turbine having a variable speed control system, the control system having an initial rotational speed set point. At least two operational parameters are obtained from one or more sensors. An adjusted rotational speed set point greater than the initial rotational speed set point is determined in response to the operational parameter. The control system is configured with the adjusted rotational speed set point. A wind turbine and wind turbine plant are also disclosed.
    Type: Application
    Filed: May 29, 2008
    Publication date: December 3, 2009
    Applicant: GE WIND ENERGY GMBH
    Inventors: Lothar WITTEKIND, Renjith VIRIPULLAN, Martin STAEDLER