Patents by Inventor LEONARDO E. BERNAL

LEONARDO E. BERNAL 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).

  • Circuit interrupter and method of estimating a temperature of a busbar in a circuit interrupter
    Patent number: 11268987
    Abstract: A circuit interrupter including a busbar, a Rogowski coil disposed around the busbar and structured to sense current having a first frequency flowing through the busbar, a test injector circuit structured to input a test signal having a second frequency to the Rogowski coil, high or band pass filter circuitry structured to receive an output of the Rogowski coil, the output including a first component having the first frequency and being proportional to the current through the busbar and a second component having the second frequency and being proportional to a temperature of the Rogowski coil, and to attenuate the first component of the Rogowski coil output, and an electronic trip unit including a temperature measurement unit structured to receive an output of the high or band pass filter circuitry and to estimate the temperature of the busbar based on the output of the high or band pass filter circuitry.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: March 8, 2022
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Leonardo E. Bernal, Daniel A. Hosko, John E. Downs, Theodore J. Miller
  • CIRCUIT INTERRUPTER AND METHOD OF ESTIMATING A TEMPERATURE OF A BUSBAR IN A CIRCUIT INTERRUPTER
    Publication number: 20210088556
    Abstract: A circuit interrupter including a busbar, a Rogowski coil disposed around the busbar and structured to sense current having a first frequency flowing through the busbar, a test injector circuit structured to input a test signal having a second frequency to the Rogowski coil, high or band pass filter circuitry structured to receive an output of the Rogowski coil, the output including a first component having the first frequency and being proportional to the current through the busbar and a second component having the second frequency and being proportional to a temperature of the Rogowski coil, and to attenuate the first component of the Rogowski coil output, and an electronic trip unit including a temperature measurement unit structured to receive an output of the high or band pass filter circuitry and to estimate the temperature of the busbar based on the output of the high or band pass filter circuitry.
    Type: Application
    Filed: September 23, 2019
    Publication date: March 25, 2021
    Applicant: EATON INTELLIGENT POWER LIMITED
    Inventors: LEONARDO E. BERNAL, DANIEL A. HOSKO, JOHN E. DOWNS, THEODORE J. MILLER