Patents by Inventor Gregory A. Duba

Gregory A. Duba 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).

  • Method and arrangement for a high voltage single-stage variable speed drive
    Patent number: 6118932
    Abstract: A high voltage, single-stage variable speed motor power supply utilizes direct AC-to-AC converters that do not have any intermediate DC link, along with a multi-level, multi-phase, multi-circuit variable speed motor drive and a motor in which a stator is wound with a number of multi-phase circuits. Each multi-phase circuit includes semiconductor switches arranged in drive switch pairs which are operated to produce an effective DC supply with the switches being controlled so that the most positive line-to-line source voltage is utilized for the inversion process.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: September 12, 2000
    Assignee: Electric Boat Corporation
    Inventors: Joseph M. Maurio, Gregory A. Duba, Edgar S. Thaxton