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Cathode root motion studies of high current arcs using an optical fiber array based imaging system

Cathode root motion studies of high current arcs using an optical fiber array based imaging system
Cathode root motion studies of high current arcs using an optical fiber array based imaging system
An integrated portable measurement system is presented for the study of high speed and high temperature unsteady plasma flows such as those found in the vicinity of high current switching arcs. The system permits direct and nonintrusive measurement of arc light emission images with a capture rate of 1 million images per second (1MHz), and 8 bit intensity resolution. Novel software techniques are reported to visualise the arc motion and to measure arc trajectories. Results are presented on high current (2kA) discharge events where the electrode and arc runner surfaces are investigated using optical surface scanning methods; such that the position of the arc roots on the runner can be correlated to the measured trajectories. The results show evidence of the cathode arc root stepping along the arc runners.
1062-6808
1-6
IEEE
McBride, J.W.
d9429c29-9361-4747-9ba3-376297cb8770
Cross, K.J
e4b34820-6de5-4ccc-a446-e6c8f17d9970
McBride, J.W.
d9429c29-9361-4747-9ba3-376297cb8770
Cross, K.J
e4b34820-6de5-4ccc-a446-e6c8f17d9970

McBride, J.W. and Cross, K.J (2010) Cathode root motion studies of high current arcs using an optical fiber array based imaging system. In 2010 Proceedings of the 56th IEEE Holm Conference on Electrical Contacts. IEEE. pp. 1-6 . (doi:10.1109/HOLM.2010.5619566).

Record type: Conference or Workshop Item (Paper)

Abstract

An integrated portable measurement system is presented for the study of high speed and high temperature unsteady plasma flows such as those found in the vicinity of high current switching arcs. The system permits direct and nonintrusive measurement of arc light emission images with a capture rate of 1 million images per second (1MHz), and 8 bit intensity resolution. Novel software techniques are reported to visualise the arc motion and to measure arc trajectories. Results are presented on high current (2kA) discharge events where the electrode and arc runner surfaces are investigated using optical surface scanning methods; such that the position of the arc roots on the runner can be correlated to the measured trajectories. The results show evidence of the cathode arc root stepping along the arc runners.

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More information

Accepted/In Press date: October 2010
Published date: 9 November 2010
Venue - Dates: 56th IEEE Holm Conference on Electrical Contacts, United States, 2010-10-04 - 2010-10-07

Identifiers

Local EPrints ID: 166315
URI: http://eprints.soton.ac.uk/id/eprint/166315
ISSN: 1062-6808
PURE UUID: 9cc0ea7c-5e5d-4bc3-bcc1-d2ac0af581aa

Catalogue record

Date deposited: 29 Oct 2010 08:21
Last modified: 21 Jan 2020 17:32

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