Patents by Inventor Leon H. Beverly

Leon H. Beverly 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 apparatus for reducing the harmonic currents in alternating-current distribution networks
    Patent number: 5576942
    Abstract: An improved apparatus and method reduce the harmonic content of AC line and neutral line currents in polyphase AC source distribution networks. The apparatus and method employ a polyphase Zig-Zag transformer connected between the AC source distribution network and a load. The apparatus and method also employs a mechanism for increasing the source neutral impedance of the AC source distribution network. This mechanism can consist of a choke installed in the neutral line between the AC source and the Zig-Zag transformer.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: November 19, 1996
    Assignee: Universities Research Association, Inc.
    Inventors: Leon H. Beverly, Richard D. Hance, Alexandr L. Kristalinski, Age T. Visser