Patents by Inventor Peter A. Hein

Peter A. Hein 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).

  • Control of an AC-to-DC power supply assembly fed by a three-phase AC source
    Patent number: 7715215
    Abstract: Control of an AC-to-DC power supply assembly fed by a three-phase AC source is provided by: determining whether the power supply assembly includes greater than three single-phase power regulators feeding a common load, with multiple regulators being connected in parallel across a common phase of the AC source, and if so, summing currents provided by the regulators to the common load; and ascertaining whether the summed current is less than a predefined threshold, and if yes, operating the power supply assembly in a line balance mode to maintain power drawn on the phases of the AC source in balance, and if greater than the predefined threshold, operating the power supply assembly in a maximize power mode wherein power is provided to the common load without maintaining power drawn on the phases of the AC source in balance.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: May 11, 2010
    Assignee: International Business Machines Corporation
    Inventors: Frank E. Bosco, Kevin R. Covi, Anthony J. Cozzolino, Gary F. Goth, Raymond J. Harrington, Peter A. Hein, Raymond A. Longhi, Edward J. Seminaro, Peter A. Wendling