Patents by Inventor Peter M. Barbosa

Peter M. Barbosa 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).

  • Patent number: 6349044
    Abstract: A three-level DC-to-DC converter is provided having zero-voltage and zero-current switching (ZVZCS). A flying capacitor is provided on the primary side of the converter to achieve zero voltage switching (ZVS). In addition, during freewheeling (i.e., when no power is being transferred from the primary side to the secondary side), an auxiliary power source is provided to eliminate the circulating energy and to achieve zero current switching (ZCS) for the commutation switches.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: February 19, 2002
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Francisco Canales-Abarca, Peter M. Barbosa, Fred C. Lee