Patents by Inventor Knud Dam Hageman Madsen

Knud Dam Hageman Madsen 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).

  • Method and arrangement for operating a wind farm within voltage limit
    Patent number: 9531193
    Abstract: A method for determining a limit value of a wind turbine reference operational variable is described The wind turbine being connected to a connection node to which a utility grid is connected. The method includes: obtaining a first input signal indicative of a connection node limit voltage; obtaining a second input signal indicative of a connection node voltage; and determining the limit value of the wind turbine reference operational variable based on the first signal and the second signal. Further a corresponding arrangement is described.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: December 27, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Björn Andresen, Yin Bo, Knud Dam Hageman Madsen
  • Method and arrangement for controlling an operation of an electric energy production facility during a disconnection to a utility grid
    Patent number: 9366233
    Abstract: A method is provided for operating an electric energy production facility during a fault in a utility grid to which energy is to be delivered. The energy production facility includes at least one wind turbine. The method includes disconnecting the utility grid from the wind turbine. The method further includes connecting an external generator via a cable to an auxiliary equipment of the wind turbine, to deliver active power to the auxiliary equipment. The cable is connected to a converter of the wind turbine the converter supporting reactive power. A corresponding arrangement also provided.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: June 14, 2016
    Assignee: SIEMENES AKTIENGESELLSCHAFT
    Inventors: John Bech, Knud Dam Hageman Madsen
  • METHOD AND ARRANGEMENT FOR OPERATING A WIND FARM WITHIN VOLTAGE LIMIT
    Publication number: 20130026756
    Abstract: A method for determining a limit value of a wind turbine reference operational variable is described The wind turbine being connected to a connection node to which a utility grid is connected. The method includes: obtaining a first input signal indicative of a connection node limit voltage; obtaining a second input signal indicative of a connection node voltage; and determining the limit value of the wind turbine reference operational variable based on the first signal and the second signal. Further a corresponding arrangement is described.
    Type: Application
    Filed: July 17, 2012
    Publication date: January 31, 2013
    Inventors: Björn Andresen, Yin Bo, Knud Dam Hageman Madsen
  • Method and arrangement for controlling an operation of an electric energy production facility during a disconnection to a utility grid
    Publication number: 20120242295
    Abstract: A method is provided for operating an electric energy production facility during a fault in a utility grid to which energy is to be delivered. The energy production facility includes at least one wind turbine. The method includes disconnecting the utility grid from the wind turbine. The method further includes connecting an external generator via a cable to an auxiliary equipment of the wind turbine, to deliver active power to the auxiliary equipment. The cable is connected to a converter of the wind turbine the converter supporting reactive power. A corresponding arrangement also provided.
    Type: Application
    Filed: March 1, 2012
    Publication date: September 27, 2012
    Inventors: John Bech, Knud Dam Hageman Madsen