Patents Assigned to Ace-Tronics Company, Inc.
  • Method and apparatus for determining and handling brake failures in open loop variable frequency drive motors
    Patent number: 7148652
    Abstract: A controller for a variable frequency drive monitors electrical power from a variable frequency drive motor while a brake is maintaining a load driven or moved by the motor without requiring additional feedback components of a closed loop configuration. If excess electrical power is being generated by the motor, an undesirable condition in the brake is indicated. Support or maintenance of the load is assumed by the motor in that event. Appropriate alarms or indicators are also activated.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: December 12, 2006
    Assignee: Ace-Tronics Company, Inc.
    Inventors: Ace Ghanemi, Michael L. Perkins, Michael J. Roessler, Kevin McKeown