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:
Dec. 02, 2025
Filed:
Oct. 24, 2023
L3harris Technologies, Inc., Melbourne, FL (US);
Lixin Tang, Irvine, CA (US);
L3Harris Technologies, Inc., Melbourne, FL (US);
Abstract
In an embodiment, voltage fault detection is performed for alternating current (AC) multi-phase power systems based on a reconstructed or virtual voltage signal derived from voltage samples captured in a shortened sample window to reduce fault detection time. The embodiment of the present disclosure constructs the virtual voltage signal (emulating the root mean square (RMS) voltage of any of the phases) from the voltage samples captured from signals of the multi-phase power system. The embodiment of the present disclosure employs a shortened sample window of T/2/N (N is the number of phases ≥3) to capture the voltage samples, thereby reducing measurement and fault detection delay. The virtual voltage signal is used determine root mean square (RMS) voltage for voltage fault detection.