Patents by Inventor Bjorn Andresen

Bjorn Andresen 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).

  • Publication number: 20070073445
    Abstract: The present invention relates to a method for operating a converter system of a wind turbine, wherein the converter system includes converter modules capable of converting electric power produced by a generator to electric power applicable to a utility grid. The converter modules include generator inverters and grid inverters. The method determines the enabling/disabling of the converter modules in response to a parameter related to the variable amount of electric power being produced by the generator. Advantages of the present invention are optimisation of power efficiency of the converter modules and improved reliability of the converter modules. Another advantage is the capability of fast enabling and disabling of the converter modules.
    Type: Application
    Filed: September 27, 2006
    Publication date: March 29, 2007
    Inventors: Jose Llorente Gonzalez, Bjorn Andresen, Jens Birk
  • Patent number: 7015595
    Abstract: A variable speed wind turbine having a passive grid side rectifier using scalar power control and dependent pitch control is disclosed. The variable speed turbine may include an electrical generator to provide power for a power grid and a power conversion system coupled to the electrical generator. The power conversion system may include at least one passive grid side rectifier. The power conversion system may provide power to the electrical generator using the passive grid side rectifier. The variable speed wind turbine may also use scalar power control to provide more precise control of electrical quantities on the power grid. The variable speed wind turbine may further use dependent pitch control to improve responsiveness of the wind turbine.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: March 21, 2006
    Assignee: Vestas Wind Systems A/S
    Inventors: Lorenz Feddersen, Eckardt Siebenthaler, Björn Andresen
  • Patent number: 6856041
    Abstract: A variable speed wind turbine having a passive grid side rectifier using scalar power control and dependent pitch control is disclosed. The variable speed turbine may include an electrical generator to provide power for a power grid and a power conversion system coupled to the electrical generator. The power conversion system may include at least one passive grid side rectifier. The power conversion system may provide power to the electrical generator using the passive grid side rectifier. The variable speed wind turbine may also use scalar power control to provide more precise control of electrical quantities on the power grid. The variable speed wind turbine may further use dependent pitch control to improve responsiveness of the wind turbine.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: February 15, 2005
    Assignee: Vestas Wind Systems A/S
    Inventors: Eckardt Siebenthaler, Björn Andresen, Lorenz Feddersen
  • Patent number: 6856040
    Abstract: A variable speed wind turbine having a passive grid side rectifier using scalar power control and dependent pitch control is disclosed. The variable speed turbine may include an electrical generator to provide power for a power grid and a power conversion system coupled to the electrical generator. The power conversion system may include at least one passive grid side rectifier. The power conversion system may provide power to the electrical generator using the passive grid side rectifier. The variable speed wind turbine may also use scalar power control to provide more precise control of electrical quantities on the power grid. The variable speed wind turbine may further use dependent pitch control to improve responsiveness of the wind turbine.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: February 15, 2005
    Assignee: Vestas Wind Systems A/S
    Inventors: Lorenz Feddersen, Eckardt Siebenthaler, Björn Andresen
  • Patent number: 6853094
    Abstract: A variable speed wind turbine having a passive grid side rectifier using scalar power control and dependent pitch control is disclosed. The variable speed turbine may include an electrical generator to provide power for a power grid and a power conversion system coupled to the electrical generator. The power conversion system may include at least one passive grid side rectifier. The power conversion system may provide power to the electrical generator using the passive grid side rectifier. The variable speed wind turbine may also use scaler power control to provide more precise control of electrical quantities on the power grid. The variable speed wind turbine may further use dependent pitch control to improve responsiveness of the wind turbine.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: February 8, 2005
    Assignee: Vestas Wind Systems A/S
    Inventors: Lorenz Feddersen, Eckardt Siebenthaler, Björn Andresen
  • Publication number: 20040222642
    Abstract: A variable speed wind turbine having a passive grid side rectifier using scalar power control and dependent pitch control is disclosed. The variable speed turbine may include an electrical generator to provide power for a power grid and a power conversion system coupled to the electrical generator. The power conversion system may include at least one passive grid side rectifier. The power conversion system may provide power to the electrical generator using the passive grid side rectifier. The variable speed wind turbine may also use scalar power control to provide more precise control of electrical quantities on the power grid. The variable speed wind turbine may further use dependent pitch control to improve responsiveness of the wind turbine.
    Type: Application
    Filed: June 1, 2004
    Publication date: November 11, 2004
    Applicant: Vestas Wind Systems A/S
    Inventors: Eckardt Siebenthaler, Bjorn Andresen, Lorenz Feddersen
  • Publication number: 20040217595
    Abstract: A variable speed wind turbine having a passive grid side rectifier using scalar power control and dependent pitch control is disclosed. The variable speed turbine may include an electrical generator to provide power for a power grid and a power conversion system coupled to the electrical generator. The power conversion system may include at least one passive grid side rectifier. The power conversion system may provide power to the electrical generator using the passive grid side rectifier. The variable speed wind turbine may also use scalar power control to provide more precise control of electrical quantities on the power grid. The variable speed wind turbine may further use dependent pitch control to improve responsiveness of the wind turbine.
    Type: Application
    Filed: June 1, 2004
    Publication date: November 4, 2004
    Applicant: Vestas Wind Systems A/S
    Inventors: Lorenz Feddersen, Eckardt Siebenthaler, Bjorn Andresen
  • Publication number: 20040217594
    Abstract: A variable speed wind turbine having a passive grid side rectifier using scalar power control and dependent pitch control is disclosed. The variable speed turbine may include an electrical generator to provide power for a power grid and a power conversion system coupled to the electrical generator. The power conversion system may include at least one passive grid side rectifier. The power conversion system may provide power to the electrical generator using the passive grid side rectifier. The variable speed wind turbine may also use scalar power control to provide more precise control of electrical quantities on the power grid. The variable speed wind turbine may further use dependent pitch control to improve responsiveness of the wind turbine.
    Type: Application
    Filed: June 1, 2004
    Publication date: November 4, 2004
    Applicant: Vestas Wind Systems A/S
    Inventors: Lorenz Feddersen, Eckardt Siebenthaler, Bjorn Andresen
  • Publication number: 20040217596
    Abstract: A variable speed wind turbine having a passive grid side rectifier using scalar power control and dependent pitch control is disclosed. The variable speed turbine may include an electrical generator to provide power for a power grid and a power conversion system coupled to the electrical generator. The power conversion system may include at least one passive grid side rectifier. The power conversion system may provide power to the electrical generator using the passive grid side rectifier. The variable speed wind turbine may also use scalar power control to provide more precise control of electrical quantities on the power grid. The variable speed wind turbine may further use dependent pitch control to improve responsiveness of the wind turbine.
    Type: Application
    Filed: June 1, 2004
    Publication date: November 4, 2004
    Applicant: Vestas Wind Systems A/S
    Inventors: Lorenz Feddersen, Eckardt Siebenthaler, Bjorn Andresen
  • Publication number: 20030151259
    Abstract: A variable speed wind turbine having a passive grid side rectifier using scalar power control and dependent pitch control is disclosed. The variable speed turbine may include an electrical generator to provide power for a power grid and a power conversion system coupled to the electrical generator. The power conversion system may include at least one passive grid side rectifier. The power conversion system may provide power to the electrical generator using the passive grid side rectifier. The variable speed wind turbine may also use scalar power control to provide more precise control of electrical quantities on the power grid. The variable speed wind turbine may further use dependent pitch control to improve responsiveness of the wind turbine.
    Type: Application
    Filed: February 11, 2002
    Publication date: August 14, 2003
    Inventors: Lorenz Feddersen, Eckardt Siebenthaler, Bjorn Andresen