Patents by Inventor Brett Nee

Brett Nee 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).

  • Switching frequency modulation utilizing rotor position
    Patent number: 8941346
    Abstract: A control system (128) for controlling a switched reluctance (SR) machine (110) having a rotor (116) and a stator (118) is provided. The control system (128) may include a converter circuit (122) operatively coupled to the stator (118) and including a plurality of switches (132) in selective communication with each phase of the stator (118) and a controller (130) in communication with each of the stator (118) and the converter circuit (122). The controller (130) may be configured to determine a position of the rotor (116) relative to the stator (118), and generate a modulated switching frequency (152) based on the rotor position.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: January 27, 2015
    Assignee: Caterpillar Inc.
    Inventors: Brett Nee, Joshua Williams
  • Switching Frequency Modulation Utilizing Rotor Position
    Publication number: 20140117900
    Abstract: A control system (128) for controlling a switched reluctance (SR) machine (110) having a rotor (116) and a stator (118) is provided. The control system (128) may include a converter circuit (122) operatively coupled to the stator (118) and including a plurality of switches (132) in selective communication with each phase of the stator (118) and a controller (130) in communication with each of the stator (118) and the converter circuit (122). The controller (130) may be configured to determine a position of the rotor (116) relative to the stator (118), and generate a modulated switching frequency (152) based on the rotor position.
    Type: Application
    Filed: October 31, 2012
    Publication date: May 1, 2014
    Applicant: CATERPILLAR INC.
    Inventors: Brett Nee, Joshua Williams