Patents by Inventor David Edward Roop

David Edward Roop 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).

  • Selective power oscillation damping control system with damping ratio dynamic gain and method for the same
    Patent number: 11637428
    Abstract: A system and method to selectively pass and damp oscillations in an electric power grid via a controller of a power electronic device irrespective of the modes of the power oscillations. The system and method includes multiple limiters having dynamic limits that are openable and closeable to control the response of the controller, damping ratio dynamic gain control logic that determines a dynamic gain for a control signal based on the oscillation characteristics of one or more input signals, and pulse counter logic to selectively control at least one of the limiters based on the pulse count of the control signal.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: April 25, 2023
    Assignee: Mitsubishi Electric Power Products, Inc.
    Inventors: David Edward Roop, Samantha Ann Morello, Tamojit Chakraborty
  • SELECTIVE POWER OSCILLATION DAMPING CONTROL SYSTEM WITH DAMPING RATIO DYNAMIC GAIN AND METHOD FOR THE SAME
    Publication number: 20220102976
    Abstract: A system and method to selectively pass and damp oscillations in an electric power grid via a controller of a power electronic device irrespective of the modes of the power oscillations. The system and method includes multiple limiters having dynamic limits that are openable and closeable to control the response of the controller, damping ratio dynamic gain control logic that determines a dynamic gain for a control signal based on the oscillation characteristics of one or more input signals, and pulse counter logic to selectively control at least one of the limiters based on the pulse count of the control signal.
    Type: Application
    Filed: September 29, 2020
    Publication date: March 31, 2022
    Inventors: David Edward Roop, Samantha Ann Morello, Tamojit Chakraborty