High frequency arc fault detection
US11047899B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2018 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Aug 1, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/58
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for identifying an arc fault in a wire, the system comprising a controller operably connected to a first load via first wire; the controller configured to supply a current to the first load, wherein the controller is operable to measure and filter the first voltage on the first wire with a bandpass filter having a selected pass band to select and retain spectral content, amplify the retained spectral content, and identify an envelope of the amplified retained spectral content. The controller also operable to measure a first current in the first wire and correlate changes in the first current with a characteristic of the amplified retained spectral content to identify an arc fault, wherein the characteristic includes a buffered envelope as a signal indicative of the amount of energy in the selected passband frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.