Patents by Inventor Kent Michael Harmon

Kent Michael Harmon 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).

  • Power converter system
    Patent number: 6603672
    Abstract: A power conversion system 10 which comprises a controller 12 and conversion assemblies 46, 48 which selectively rectify and invert an electrical signal. Conversion assemblies 46, 48 respectively comprise a plurality of integrated gate bipolar transistor assemblies. The power conversion system 10 is effective to convert DC current to AC current, convert AC current to DC current, and to control the output frequency of a received electrical signal to a conventional operating range.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: August 5, 2003
    Assignee: Ballard Power Systems Corporation
    Inventors: Doug D. Deng, Dumitru Dan Raceu, Kent Michael Harmon
  • Voltage control method for an electric motor control system
    Patent number: 6047787
    Abstract: A method for controlling regenerative energy in a system having an motor and having a power converter for converting regenerative energy from the motor for supply as electrical current to a receiving apparatus includes estimating a resistance to electrical current flow between the electrical power converter and the receiving apparatus and measuring a first voltage at the receiving apparatus. The method further comprises controlling a regenerative current from the power converter to the receiving apparatus in view of the resistance and the first voltage to limit a second voltage at the power converter.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: April 11, 2000
    Assignee: Ecostar Electric Drive Systems LLC
    Inventors: Doug D. Deng, Christos Aristotles Kambouris, Kent Michael Harmon