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:
Jun. 14, 2016
Filed:
May. 23, 2013
Pentair Thermal Management, Llc, Menlo Park, CA (US);
Juergen J. Zach, Menlo Park, CA (US);
Pentair Thermal Management LLC, Menlo Park, CA (US);
Abstract
Embodiments of the invention provide systems and methods for detecting a sustained arc in an electrical system containing polymer-based, semi-conducting components which derive their conductivity from carbon black, carbon nanotubes or other conductive materials. Over a time period, current and voltage data for a cable signal are collected, from which spectral information is extracted. The spectral information has a frequency component and an amplitude component. The cable signal is processed to remove a line frequency signature that includes the electrical system's line current frequency and its harmonics. One or more off-harmonic frequency bands are extracted from the cable signal and analyzed to determine the presence of an arc signature therein. Analysis of the off-harmonic frequency bands can include applying a matched filter to the off-harmonic frequency bands to obtain an indicator signal and determining if the indicator signal exceeds a threshold that indicates the presence of the sustained arc.