Patents Assigned to Pentadyne Power Corporation
  • Synchronous reluctance machine controller
    Patent number: 7741795
    Abstract: The present invention provides an electro-mechanical energy exchange system with a variable speed synchronous reluctance motor-generator having an all-metal rotor. A bi-directional AC-to-DC electric power converter interconnects the motor-generator with a DC bus. First and second hybrid controllers provide current regulation for the motor-generator and voltage regulation for the DC bus. Use of both feedback and feedforward control elements provides a controller particularly suited for operating high speed devices.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: June 22, 2010
    Assignee: Pentadyne Power Corporation
    Inventor: Claude Michael Kalev
  • Three plus three phase flywheel power supply
    Patent number: 7633172
    Abstract: A flywheel power supply includes a motor-generator having a polyphase stator.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: December 15, 2009
    Assignee: Pentadyne Power Corporation
    Inventors: Claude Michael Kalev, Heath F. Hofmann
  • Flywheel system with synchronous reluctance and permanent magnet generators
    Patent number: 7187087
    Abstract: A flywheel system incorporates a variable speed synchronous reluctance motor-generator and a variable speed permanent magnet generator for providing backup power. Rotating elements are supported by electromagnetic bearings and electric power provided by the backup generator maintains electromagnetic bearing operation during that portion of a coast down period when shaft speed falls below the minimum speed required for operation of the synchronous reluctance motor-generator.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: March 6, 2007
    Assignee: Pentadyne Power Corporation
    Inventor: Claude Khalizadeh
  • Flywheel system with synchronous reluctance and permanent magnet generators
    Patent number: 7109622
    Abstract: The present invention provides a flywheel system with a variable speed synchronous reluctance motor-generator and a variable speed permanent magnet generator for providing backup power. The flywheel system incorporates rotating elements supported by electromagnetic bearings. Electric power provided by the backup generator maintains electromagnetic bearing operation during that portion of the coast down period when shaft speed falls below the minimum required for operation of the synchronous reluctance motor-generator.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: September 19, 2006
    Assignee: Pentadyne Power Corporation
    Inventor: Claude Khalizadeh
  • Feedforward controller for synchronous reluctance machines
    Patent number: 7078876
    Abstract: The present invention provides an electromechanical energy exchange system with a variable speed synchronous reluctance motor-generator having an all-metal rotor. A bi-directional AC-to-DC electric power converter interconnects the motor-generator with a DC bus. First and second hybrid controllers provide current regulation for the motor-generator and voltage regulation for the DC bus. Use of both feedback and feedforward control elements provides a controller particularly suited for operating high speed devices.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: July 18, 2006
    Assignee: Pentadyne Power Corporation
    Inventors: Heath F. Hofmann, Claude Khalizadeh