Patents by Inventor Ake N. C. Almgren

Ake N. C. Almgren 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).

  • Automatic turbogenerator restarting system
    Patent number: 6713892
    Abstract: A method and system to automatically restart a permanent magnet turbogenerator/motor when a fatal fault is detected. The automatic restart logic includes time constraints and limitations on the number of iterations, and is useful regardless of whether the permanent magnet turbogenerator/motor is in a grid connect mode or a standalone mode, and regardless of how the fatal fault originates or is detected. Additional control logic is utilized to handle grid transients and over load conditions to prevent a fatal fault from occurring by using time constraints and an iterative process, together with a brake resistor to control DC bus voltage.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: March 30, 2004
    Assignee: Capstone Turbine Corporation
    Inventors: Mark G. Gilbreth, Simon R. Wall, Ake N. C. Almgren, Joel B. Wacknov
  • Automatic turbogenerator restarting method and system
    Patent number: 6552440
    Abstract: A method and system to automatically restart a permanent magnet turbogenerator/motor when a fatal fault is detected. The automatic restart logic includes time constraints and limitations on the number of iterations, and is useful regardless of whether the permanent magnet turbogenerator/motor is in a grid connect mode or a standalone mode, and regardless of how the fault originates or is detected. Additional control logic is utilized to handle grid transients and over load conditions to prevent a fatal fault from occurring by using time constraints and an iterative process, together with a brake resistor to control DC bus voltage.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: April 22, 2003
    Assignee: Capstone Turbine Corporation
    Inventors: Mark G. Gilbreth, Simon R. Wall, Ake N. C. Almgren, Joel B. Wacknov
  • Automatic turbogenerator restarting system
    Patent number: 6512306
    Abstract: A method and system to automatically restart a permanent magnet turbogenerator/motor when a fatal fault is detected. The automatic restart logic includes time constraints and limitations on the number of iterations, and is useful regardless of whether the permanent magnet turbogenerator/motor is in a grid connect mode or a standalone mode, and regardless of how the fatal fault originates or is detected. Additional control logic is utilized to handle grid transients and over load conditions to prevent a fatal fault from occurring by using time constraints and an iterative process, together with a brake resistor to control DC bus voltage.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: January 28, 2003
    Assignee: Capstone Turbine Corporation
    Inventors: Mark G. Gilbreth, Simon R. Wall, Ake N. C. Almgren, Joel B. Wacknov
  • Automatic turbogenerator restarting method and system
    Publication number: 20020074804
    Abstract: A method and system to automatically restart a permanent magnet turbogenerator/motor when a fatal fault is detected. The automatic restart logic includes time constraints and limitations on the number of iterations, and is useful regardless of whether the permanent magnet turbogenerator/motor is in a grid connect mode or a standalone mode, and regardless of how the fatal fault originates or is detected. Additional control logic is utilized to handle grid transients and over load conditions to prevent a fatal fault from occurring by using time constraints and an iterative process, together with a brake resistor to control DC bus voltage.
    Type: Application
    Filed: July 6, 2001
    Publication date: June 20, 2002
    Applicant: Capstone Turbine Corporation
    Inventors: Mark G. Gilbreth, Simon R. Wall, Ake N. C. Almgren, Joel B. Wacknov
  • Automatic turbogenerator restarting method and system
    Publication number: 20020005643
    Abstract: A method and system to automatically restart a permanent magnet turbogenerator/motor when a fatal fault is detected. The automatic restart logic includes time constraints and limitations on the number of iterations, and is useful regardless of whether the permanent magnet turbogenerator/motor is in a grid connect mode or a standalone mode, and regardless of how the fatal fault originates or is detected. Additional control logic is utilized to handle grid transients and over load conditions to prevent a fatal fault from occurring by using time constraints and an iterative process, together with a brake resistor to control DC bus voltage.
    Type: Application
    Filed: July 6, 2001
    Publication date: January 17, 2002
    Applicant: Capstone Turbine Corporation
    Inventors: Mark G. Gilbreth, Simon R. Wall, Ake N.C. Almgren, Joel B. Wacknov
  • Automatic turbogenerator restarting method and system
    Patent number: 6281596
    Abstract: A method and system to automatically restart a permanent magnet turbogenerator/motor when a fatal fault is detected. The automatic restart logic includes time constraints and limitations on the number of iterations, and is useful regardless of whether the permanent magnet turbogenerator/motor is in a grid connect mode or a standalone mode, and regardless of how the fatal fault originates or is detected. Additional control logic is utilized to handle grid transients and over load conditions to prevent a fatal fault from occurring by using time constraints and an iterative process, together with a brake resistor to control DC bus voltage.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: August 28, 2001
    Assignee: Capstone Turbine Corporation
    Inventors: Mark G. Gilbreth, Simon R. Wall, Ake N. C. Almgren, Joel B. Wacknov