Arc detection using discrete wavelet transforms

Details Arc detection using discrete wavelet transforms Arc detection using discrete wavelet transforms

H - Electricity

02

H

H02H 3/00 (2006.01)

Patent

CA 2672279

An apparatus to perform series and parallel arc fault current interruption (AFCI). The apparatus includes a resistive element (10) configured to sense a load from which a current signal is generated, a first detection unit (30) configured to output a first signal based on the current signal, and a microcontroller (80) configured to decompose at least the first signal via discrete wavelet transforms to thereby obtain discrete wavelet coefficients, and to generate a trip signal when the discrete wavelet coefficients indicate that a threshold condition for trip signal generation are satisfied.

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