Patents by Inventor Jacob Verhulst

Jacob Verhulst 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 impedance measurement using chirp signal injection
    Patent number: 9618555
    Abstract: A method for impedance measurement using chirp signal injection is provided. The method includes injecting at least one chirp signal into the three-phase AC system, and collecting at least one response to the at least one chirp signal. The method further includes transferring the at least one response from abc coordinates to dq coordinates. At least one impedance is calculated based on the at least one response to the at least one chirp signal.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: April 11, 2017
    Assignees: Huntington Ingalls Incorporated, Virginia Tech Intellectual Properties, Inc.
    Inventors: Jacob Verhulst, Mohamed Belkhayat, Zhiyu Shen, Marko Jaksic, Paolo Mattavelli, Dushan Boroyevich
  • System and method for impedance measurement using series and shunt injection
    Patent number: 9562939
    Abstract: A method for impedance measurement in a three-phase AC system is provided. The method includes injecting a shunt perturbation signal into the three-phase AC system and collecting a response to the shunt perturbation signal, and injecting a series perturbation signal into the three-phase AC system and collecting a response to the series perturbation signal. The response to the shunt perturbation signal and the response to the series perturbation signal are then transferred from abc coordinate to dq coordinates. At least one impedance of the three-phase AC system is calculated based on the response to the shunt perturbation signal and the response to the series perturbation signal.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: February 7, 2017
    Assignees: Huntington Ingalls Incorporated, Virginia Tech Intellectual Properties, Inc.
    Inventors: Jacob Verhulst, Mohamed Belkhayat, Zhiyu Shen, Marko Jaksic, Paolo Mattavelli, Dushan Boroyevich
  • System and Method for Impedance Measurement Using Series and Shunt Injection
    Publication number: 20140032148
    Abstract: A method for impedance measurement in a three-phase AC system is provided. The method includes injecting a shunt perturbation signal into the three-phase AC system and collecting a response to the shunt perturbation signal, and injecting a series perturbation signal into the three-phase AC system and collecting a response to the series perturbation signal. The response to the shunt perturbation signal and the response to the series perturbation signal are then transferred from abc coordinate to dq coordinates. At least one impedance of the three-phase AC system is calculated based on the response to the shunt perturbation signal and the response to the series perturbation signal.
    Type: Application
    Filed: July 30, 2013
    Publication date: January 30, 2014
    Inventors: Jacob Verhulst, Mohamed Belkhayat, Zhiyu Shen, Marko Jaksic, Paolo Mattavelli, Dushan Boroyevich
  • System and Method for Impedance Measurement Using Chirp Signal Injection
    Publication number: 20140032147
    Abstract: A method for impedance measurement using chirp signal injection is provided. The method includes injecting at least one chirp signal into the three-phase AC system, and collecting at least one response to the at least one chirp signal. The method further includes transferring the at least one response from abc coordinates to dq coordinates. At least one impedance is calculated based on the at least one response to the at least one chirp signal.
    Type: Application
    Filed: July 30, 2013
    Publication date: January 30, 2014
    Inventors: Jacob Verhulst, Mohamed Belkhayat, Zhiyu Shen, Marko Jaksic, Paolo Mattavelli, Dushan Boroyevich