Influence of the Current-Limiting Resistance on the Arc Commutation Process Across the Gap of a Separated Arc Runner

Ruiliang GUAN  Hongwu LIU  Nairui YIN  Yanfeng HE  Degui CHEN  

IEICE TRANSACTIONS on Electronics   Vol.E94-C   No.9   pp.1416-1421
Publication Date: 2011/09/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E94.C.1416
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices – Papers selected from International Session on Electro-Mechanical Devices (IS-EMD2010) and other research results –)
air arc,  arc commutation,  current limiting,  resistance,  

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With measuring the arc current, arc voltage and arc images, the high-current air arc commutation process across the separated electrodes was investigated. It shows that the existence of a short stable arc in the gap may increase the current commutation time. According to the energy balance of the arc column, the conditions to maintain the short stable arc were introduced and the effects of the current limiting resistance on the current commutation process were discussed.