Patents by Inventor John Paul Filipetti

John Paul Filipetti 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).

  • Systems and methods of grounded neutral fault detection by single frequency excitation and leakage spectral analysis
    Patent number: 11855442
    Abstract: A grounded neutral fault detector that includes induction circuits and a controller is provided. The controller is configured to determine a frequency of a test signal by measuring load noise based on a first leakage signal corresponding to a first current imbalance between the line conductor and the neutral conductor for the load without the test signal being injected, analyzing a frequency spectrum of the load noise, and selecting the frequency of the test signal. The controller is further configured to inject the test signal at the selected frequency to the neutral conductor, measure impedance of a current loop formed by a potential grounded neutral fault based on a second leakage signal corresponding to a second current imbalance with the test signal being injected, and determine a grounded neutral fault.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: December 26, 2023
    Assignee: ABB Schweiz AG
    Inventors: John Paul Filipetti, Cecil Rivers, Jr., Lucas James McPhee
  • SYSTEMS AND METHODS OF GROUNDED NEUTRAL FAULT DETECTION BY SINGLE FREQUENCY EXCITATION AND LEAKAGE SPECTRAL ANALYSIS
    Publication number: 20230090349
    Abstract: A grounded neutral fault detector that includes induction circuits and a controller is provided. The controller is configured to determine a frequency of a test signal by measuring load noise based on a first leakage signal corresponding to a first current imbalance between the line conductor and the neutral conductor for the load without the test signal being injected, analyzing a frequency spectrum of the load noise, and selecting the frequency of the test signal. The controller is further configured to inject the test signal at the selected frequency to the neutral conductor, measure impedance of a current loop formed by a potential grounded neutral fault based on a second leakage signal corresponding to a second current imbalance with the test signal being injected, and determine a grounded neutral fault.
    Type: Application
    Filed: September 16, 2021
    Publication date: March 23, 2023
    Inventors: John Paul Filipetti, Cecil Rivers, JR., Lucas James McPhee