Patents by Inventor Eric C Pratt

Eric C Pratt 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 methods for power converter circuit
    Patent number: 6411534
    Abstract: Control methods for operating a power converter circuit, consisting of a full bridge DC/DC converter stage and a full bridge DC/AC inverter stage, for use in automobiles and other vehicles. The DC/DC converter is operated by pulse width modulation and by “soft switching” and “synchronous switching” which involves turning MOSFET switches OFF and ON at strategic times to gain improvements in system performance. The DC/DC converter is also operated at a relatively high and relatively constant duty cycle, and is controlled in such a way as to make the output operate as a current source. The DC/AC inverter has a cycle by cycle overload current protection scheme.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: June 25, 2002
    Assignee: Delphi Technologies, Inc.
    Inventors: Alexander Kurnia, Eric C Pratt, Kaushik Rajashekara