Arc fault detection in solar panel systems
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United States of America Patent
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Nov 7, 2017
Issued Date -
N/A
app pub date -
Mar 10, 2015
filing date -
Mar 10, 2015
priority date (Note) -
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Abstract
A system for detecting arc faults in a solar array generally comprises a plurality of solar panels connected in series, where each solar panel comprises a positive and negative output. A panel monitoring device is connected between the positive and negative output of each solar panel. The panel monitoring device comprises a switching device configurable to disconnect an output from the solar panel. The panel monitoring device comprises logic configured to scan a frequency spectrum of the solar panel and log locations of a plurality of valleys in the spectrum, monitor the plurality of valleys to determine if the plurality of valleys rise above a threshold value, report a fault status when the plurality of valleys rise above the threshold value, and automatically disable the output of the solar panel upon the determination of a fault status.
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