Patents by Inventor James D. Kueneman

James D. Kueneman 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).

  • Multiphase power converter
    Patent number: 8754619
    Abstract: A method for controlling a power converter that includes a first cell having an output connected at a first node in parallel with a second cell includes sensing a voltage signal at the first node, defining a current set point associated with the converter, processing the current set point associated with the converter to define a current set point associated with the first cell, sensing a current output by the first cell, controlling the first cell such that the first cell outputs a current substantially similar to the current set point associated with the first cell, processing the current set point associated with the converter to define a current set point associated with the second cell, sensing a current output by the second cell, and controlling the second cell such that the second cell outputs a current substantially similar to the current set point associated with the second cell.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: June 17, 2014
    Assignee: Raytheon Company
    Inventors: Robert A. Mauss, James D. Kueneman, Jeff L. Vollin
  • MULTIPHASE POWER CONVERTER
    Publication number: 20140145687
    Abstract: A method for controlling a power converter that includes a first cell having an output connected at a first node in parallel with a second cell includes sensing a voltage signal at the first node, defining a current set point associated with the converter, processing the current set point associated with the converter to define a current set point associated with the first cell, sensing a current output by the first cell, controlling the first cell such that the first cell outputs a current substantially similar to the current set point associated with the first cell, processing the current set point associated with the converter to define a current set point associated with the second cell, sensing a current output by the second cell, and controlling the second cell such that the second cell outputs a current substantially similar to the current set point associated with the second cell.
    Type: Application
    Filed: November 29, 2012
    Publication date: May 29, 2014
    Applicant: RAYTHEON COMPANY
    Inventors: Robert A. Mauss, James D. Kueneman, Jeff L. Vollin
  • Current controlled field emission thruster
    Patent number: 8453426
    Abstract: There is disclosed a field emission electric propulsion (FEEP) system including a FEEP thruster having at least one emitter and an extractor electrode, and a power supply. The power supply may provide an extractor voltage applied between the emitter and the extractor electrode. The power supply may be operable in a constant current mode in which the extractor voltage is controlled to set an ion current flowing from the emitter at a target current level.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: June 4, 2013
    Assignee: Raytheon Company
    Inventors: James D. Kueneman, Anton Vanderwyst
  • Current Controlled Field Emission Thruster
    Publication number: 20100251690
    Abstract: There is disclosed a field emission electric propulsion (FEEP) system including a FEEP thruster having at least one emitter and an extractor electrode, and a power supply. The power supply may provide an extractor voltage applied between the emitter and the extractor electrode. The power supply may be operable in a constant current mode in which the extractor voltage is controlled to set an ion current flowing from the emitter at a target current level.
    Type: Application
    Filed: April 6, 2009
    Publication date: October 7, 2010
    Inventors: James D. Kueneman, Anton Vanderwyst