Patents by Inventor Chris S. Edrington

Chris S. Edrington 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).

  • Patent number: 10262090
    Abstract: A system and method for electrical tree simulation based on a modification of a discharge avalanche model with an application of a charge simulation method to determine partial discharge data during the growth of electrical trees in an insulation system and a method of using the model to determine the remaining useful life of an insulation system.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: April 16, 2019
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Yaw D. Nyanteh, Lukas Graber, Horatio Rodrigo, Sanjeev K. Srivastava, Chris S. Edrington, David S. Cartes
  • Patent number: 9612293
    Abstract: A novel method for real-time small-signal stability analysis for power electronic-based components in a power system. The method may be used to monitor a power system in real-time by perturbing the source side of an electronic-based component of the power system of about 0.5 to 1 percent of a nominal current of the power system at the source side, and perturbing the load side of the power electronic-based component by varying the voltage at the load side. Time-domain results of the simultaneous perturbations may be transferred to frequency-domain results and the stability of the power system may be monitored by obtaining a Nyquist contour and employing Generalized Nyquist Criterion.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: April 4, 2017
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Mohamadamin Salmani, Chris S. Edrington
  • Patent number: 9612292
    Abstract: A novel method for real-time small-signal stability analysis for power electronic-based components in a power system. The method may be used to monitor a power system in real-time by perturbing the source side of an electronic-based component of the power system of about 0.5 to 1 percent of a nominal current of the power system at the source side, and perturbing the load side of the power electronic-based component by varying the voltage at the load side. Time-domain results of the simultaneous perturbations may be transferred to frequency-domain results and the stability of the power system may be monitored by obtaining a Nyquist contour and employing unit circle criterion.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: April 4, 2017
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Mohamadamin Salmani, Chris S. Edrington
  • Patent number: 9575138
    Abstract: A novel method for real-time small-signal stability analysis for power electronic-based components in a power system. The method may be used to monitor a power system in real-time by perturbing the source side of an electronic-based component of the power system by injecting a current of about 0.5 to 1 percent of a nominal current of the power system at the source side and perturbing the load side of the power electronic-based component by injecting a voltage of about 0.5 to about 1 percent of a nominal voltage of the power system at the load side and varying the voltage at the load side. Time-domain results of the perturbations may be transferred to frequency-domain results and the stability of the power system may be monitored by obtaining a Nyquist contour and employing Generalized Nyquist Criterion or unit circle criterion.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: February 21, 2017
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Mohamadamin Salmani, Chris S. Edrington
  • Patent number: 9575139
    Abstract: A novel method for real-time small-signal stability analysis for power electronic-based components in a power system. The method may be used to monitor a power system in real-time by perturbing the source side of an electronic-based component of the power system by injecting a current of about 0.5 to 1 percent of a nominal current of the power system at the source side, while simultaneously perturbing the load side of the power electronic-based component by varying the voltage at the load side. Time-domain results of the simultaneous perturbations may be transferred to frequency-domain results and the stability of the power system may be monitored by obtaining a Nyquist contour and employing Generalized Nyquist Criterion or unit circle criterion.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: February 21, 2017
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Mohamadamin Salmani, Chris S. Edrington
  • Patent number: 9519032
    Abstract: A novel method for real-time small-signal stability analysis for power electronic-based components in a power system. The method may be used to monitor a power system in real-time by perturbing the source side of an electronic-based component of the power system of about 0.5 to 1 percent of a nominal current of the power system at the source side using shunt current injection, and perturbing the load side of the power electronic-based component by varying the voltage at the load side using series voltage injection. Time-domain results of the perturbations may be transferred to frequency-domain results and the stability of the power system may be monitored by obtaining a Nyquist contour and employing unit circuit criterion or Generalized Nyquist Criterion.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: December 13, 2016
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Mohamadamin Salmani, Chris S. Edrington
  • Patent number: 9513342
    Abstract: A novel method for real-time small-signal stability analysis within the instability borders for power electronic-based components in a power system. The method may be used to monitor a power system in real-time by perturbing the source side of an electronic-based component of the power system of about 0.5 to 1 percent of a nominal current of the power system at the source side, and perturbing the load side of the power electronic-based component by varying the voltage at the load side. Time-domain results of the perturbations may be transferred to frequency-domain results and the stability of the power system may be monitored by obtaining a Nyquist contour and employing unit circuit criterion or Generalized Nyquist Criterion.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: December 6, 2016
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Mohamadamin Salmani, Chris S. Edrington
  • Patent number: 9500717
    Abstract: A novel method for real-time small-signal stability analysis for power electronic-based components in a power system. The method may be used to monitor a power system in real-time by perturbing the source side of an electronic-based component of the power system of about 0.5 to 1 percent of a nominal current of the power system at the source side, and perturbing the load side of the power electronic-based component by varying the voltage at the load side using a series voltage injection. Time-domain results of the simultaneous perturbations may be transferred to frequency-domain results and the stability of the power system may be monitored by obtaining a Nyquist contour and employing Generalized Nyquist Criterion or unit circle criterion.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: November 22, 2016
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Mohamadamin Salmani, Chris S. Edrington
  • Patent number: 9470762
    Abstract: A novel method for real-time small-signal stability analysis for power electronic-based components in a power system. The method may be used to monitor a power system in real-time by perturbing the source side of an electronic-based component of the power system using a shunt current injection of about 0.5 to 1 percent of a nominal current of the power system at the source side, and perturbing the load side of the power electronic-based component by varying the voltage at the load side. Time-domain results of the perturbations may be transferred to frequency-domain results and the stability of the power system may be monitored by obtaining a Nyquist contour and employing Generalized Nyquist Criterion or unit circle criterion.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: October 18, 2016
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Mohamadamin Salmani, Chris S. Edrington
  • Patent number: 9316701
    Abstract: A novel method for real-time small-signal stability analysis for power electronic-based components in a power system. The method is based on impedance measurement techniques and Generalized Nyquist Criterion. The method is capable of real-time application. The method may be used to monitor a system in real-time by perturbing the system persistently and utilizing the system's responses to calculate source/load impedance in time-domain and based on d-q impedance measurement theory. Time-domain results may be transferred to frequency-domain results by taking advantage of a fast Fourier transform algorithm (or optionally discrete Fourier transformer for discrete systems) and monitoring the system's stability by obtaining a Nyquist contour and employing Generalized Nyquist Criterion or unit circle criterion.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: April 19, 2016
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Mohamadamin Salmani, Chris S. Edrington