NDLI: Arc Motion and Electrode Erosion in High-Current Rail Spark Gaps

Content Provider	IEEE Xplore Digital Library
Author	Kharlov, A.V.
Copyright Year	1973
Abstract	Large capacitive energy storage systems are being implemented for powerful laser systems, electromagnetic launchers, and other pulsed power systems. Such megajoule-class modularized capacitor banks individually require precise reliable cost-effective robust closing switches for synchronous operation. The closing switch, under intense mechanical and thermal shocks imposed by a high peak current, must tolerate high charge transfer and provide long service life. The most popular closing switches up to date are spark gaps due to its relatively simple design, robustness, easy field maintenance, and repair. Spark gaps cover an impressive range of voltages, currents, Coulomb transfer, and repetition rates and an extremely wide range of applications. The main drawback of spark gaps is limited lifetime, which is related directly or indirectly to the erosion of the electrodes. The various types of switches have been introduced which utilize the principle of arc motion in a magnetic field thus effectively decreasing the current density on the switch electrodes. This paper presents the numerical calculations of arc motion and electrode erosion in a rail spark gap. The results of the numerical calculations are compared with the experimental results in this paper. The conditions for reduced electrode erosion are defined.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	2474
Ending Page	2478
Page Count	5
File Size	167526
File Format	PDF
ISSN	00933813
Volume Number	38
Issue Number	9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrodes Rails Spark gaps Switches Pulse power systems Power system reliability Robustness Magnetic switching Energy storage Power lasers spark gaps Arc motion railguns
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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