Detektion serieller Lichtbögen basierend auf den harmonischen Anteilen im DC Stromsignal

Details

Veröffentlichungs-Nr.

EP2806518

Aktenzeichen

EP13405064

Anmeldetag

24. Mai 2013

Veröffentlichung

27. Januar 2021

Erteilung

27. Januar 2021

Rechtsraum

EP

IPC

H02H3/52H02H1/00G01R31/40H02S50/10H02H1/04G01R31/52

Abstract

In a method for detection of an arc in a current path of a converter arrangement (2) for converting a DC input power to an output power, an arc is detected by sensing the current (4) in the current path by means of a current transformer (11), filtering the current signal (4') with an analog band pass filter (14), converting the analog filtered current signal (4") into a digital current signal (4"'), determining the harmonic content (19) of the digital current signal (4"') and then deciding whether an arc exists if the harmonic content (19) exceeds a threshold, where the threshold is determined at the beginning as a multiple of the average harmonic content during a certain period of time of the current signal.

Anmelder

Firmen

Delta Electronics (Thailand) Public Co., Ltd.
DET International Holding Limited

Land

🇹🇭 Thailand

Fachgebiete