Patent ID: 9746528
Date: 2017-08-29
CPC Classifications: G01R,H02H,H02S,Y02E

Claim:
1. A method for detecting a series arc in a photovoltaic device, operating in direct current mode, including N (N=1 or N>1) photovoltaic modules, connected to a charging device having a capacitive behavior for the modules, the method comprising: a) detecting, across n of the N modules (1≦n≦N), a time evolution of a voltage; b) identifying a voltage variation between a first zone of stable voltage and a second zone of stable voltage for a duration of at least 5 μs, which immediately follows the voltage variation; and c) detecting said arc by determining whether the voltage variation is between a value Vmin higher than or equal to 0.2 V and a value Vmax lower than or equal to 20 V, with a rise time of the variation between a duration Tmin higher than or equal to 0.5 us and a duration Tmax lower than or equal to 5 μs.