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|Title: ||A rotating arc gas pump for circuit breaking and other applications|
|Authors: ||Ennis, Michael G.|
Jones, Gordon R.
Kong, Michael G.
Spencer, Joe W.
Turner, David R.
|Keywords: ||Arc discharges|
Magnetic fields effects
Optical fiber measurement
|Issue Date: ||1997|
|Publisher: ||© IEEE|
|Citation: ||ENNIS, M.G. ... et al, 1997. A rotating arc gas pump for circuit breaking and other applications. IEEE Transactions on Plasma Science, 25 (5), pp. 961-966.|
|Abstract: ||A rotating arc circuit breaker is described which
uses an auxiliary current source to generate the magnetic field
for driving the arc. Test results obtained using optical fiber
measurement systems have shown that there are three main
arcing phases. Initially the arc rotates at an essentially constant
but low velocity, subsequently its velocity oscillates between this
and much higher values, and finally the arc plasma may become
diffuse in nature. Test results obtained with dielectric strength
probes have indicated that a unidirectional flow of arc heated
gas is generated. The flow is away from the moving contact
of the interrupter so promoting good dielectric strength in this
critical contact region. The combination of the optical fiber
and dielectric probe results indicates two possible modes of gas
pumping represented, respectively, by a fan and a piston-type
action of the arc. Simplified analytical models for both modes
are developed with predictions obtained showing good agreement
with the experimental results. Discussion of experimental results
suggests that the transition from oscillatory velocity changes to
diffuse arcing represents an important parameter for scaling the
geometries of future interrupters and arc heaters.|
|Description: ||This article was published in the journal, IEEE Transactions on Plasma Science [© 1997 IEEE] and is also available at: http://ieeexplore.ieee.org/ Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.|
|Appears in Collections:||Published Articles (Mechanical, Electrical and Manufacturing Engineering)|
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