Patents by Inventor Michael Egolf

Michael Egolf 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).

  • System and method for rms overcurrent backup function
    Patent number: 6185482
    Abstract: A method and apparatus for over current backup protection is provided. The method generates a set of root mean square (rms) values from samples that are taken from the system current. Several rms current values are averaged to generate an estimated rms over current value. The estimated over current value is compared with a predetermined threshold value. If the estimated current is above the predetermined threshold value, a fault protection mechanism, such as opening a circuit breaker, is activated. A generator protection unit having digital signal processing capabilities executes the inventive method to provide protection from over current episodes.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: February 6, 2001
    Assignee: ABB Power T&D Company Inc.
    Inventors: Michael Egolf, David G. Hart, James D. Stoupis