Patents by Inventor Christian Hoffrogge

Christian Hoffrogge 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).

  • Ice detection based on anemometry
    Patent number: 7487673
    Abstract: A method for ice detection for a wind turbine is provided. The method includes providing an ice condition threshold parameter adapted for distinguishing a condition during which icing may occur and a condition during which icing may not occur, measuring a wind velocity with a first anemometer, wherein the first anemometer being of a first type, measuring a wind velocity with a second anemometer, wherein the second anemometer being of a second type, and wherein the second type is different from the first type, evaluating, for a condition during which icing may occur, a deviation of the wind velocity measured with the first anemometer and the wind velocity measured with the second anemometer, and determine whether the deviation exceeds a limit value based on a calibration conducted under a condition during which icing may not occur.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: February 10, 2009
    Assignee: General Electric Company
    Inventors: Frank Ormel, Thorsten Honekamp, Christian Hoffrogge
  • ICE DETECTION BASED ON ANEMOMETRY
    Publication number: 20080141768
    Abstract: A method for ice detection for a wind turbine is provided. The method includes providing an ice condition threshold parameter adapted for distinguishing a condition during which icing may occur and a condition during which icing may not occur, measuring a wind velocity with a first anemometer, wherein the first anemometer being of a first type, measuring a wind velocity with a second anemometer, wherein the second anemometer being of a second type, and wherein the second type is different from the first type, evaluating, for a condition during which icing may occur, a deviation of the wind velocity measured with the first anemometer and the wind velocity measured with the second anemometer, and determine whether the deviation exceeds a limit value based on a calibration conducted under a condition during which icing may not occur.
    Type: Application
    Filed: December 13, 2006
    Publication date: June 19, 2008
    Inventors: Frank ORMEL, Thorsten HONEKAMP, Christian HOFFROGGE