The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2017
Filed:
Jul. 30, 2013
Huntington Ingalls, Inc., Newport News, VA (US);
Virginia Tech Intellectual Properties, Inc., Blacksburg, VA (US);
Jacob Verhulst, Newport News, VA (US);
Mohamed Belkhayat, Annandale, VA (US);
Zhiyu Shen, Blacksburg, VA (US);
Marko Jaksic, Blacksburg, VA (US);
Paolo Mattavelli, Blacksburg, VA (US);
Dushan Boroyevich, Blacksburg, VA (US);
Huntington Ingalls Incorporated, Newport News, VA (US);
Virginia Tech Intellectual Properties, Inc., Blacksburg, VA (US);
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.