Patent · US Active

Detection of electrical arcs in photovoltaic equipment

US9746528B2 · kind B2 · utility

2Cited by

18References

20Claims

0Family size

Assignee

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

Nicolas Chaintreuil · Montmélian, FR
Vincent Chauve · Montbrison, FR

Key dates

Filing date	Jul 4, 2012
Grant date	Aug 29, 2017
Priority date	—
Expiry date	Jan 25, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/50
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

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 including: a) detecting, across n of the N modules (1≦n≦N), time evolution of 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) 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 rise time of the variation between a duration Tmin higher than or equal to 0.5 μs and a duration Tmax lower than or equal to 5 μs.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.