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Influence of Peaking Capacitors in Reducing Rise Times of High-Voltage Nanosecond Pulses

Sundararajan, Raji and Nagabhushana, GR and Kishore, NK and Soundarajan, Esaki (2005) Influence of Peaking Capacitors in Reducing Rise Times of High-Voltage Nanosecond Pulses. In: IEEE Transactions on Industry Applications, 41 (3). pp. 690-697.

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High-voltage (a few hundred kilovolt), short pulses (microseconds to tonanoseconds) have been found to be effective for various biologicaldecontamination applications, such as cleaning of water withbacteria/algae. Marx generators are most commonly used for thispurpose. A serious disadvantage of Marx generators is the increase inrise times due to series inductance. To alleviate this effect, peakingcapacitors have been used to produce early time, fast-rising pulsesthat the Marx generators otherwise cannot supply due to theirrelatively high series inductance. This paper presents the results ofthe design and development of a 600-kV, 50-ns-rise-time, and similar to250-ns-duration pulse generator using a peaking capacitor. A 132-kVcondenser-type bushing of 650-kV BIL and 230-pF capacitance was used asa peaking capacitor to reduce rise time. The effect of the peakingcapacitor was also studied employing circuit modeling of the generatorand the influence of various parameters was investigated. There is agood correlation between the experimental and the numerical results.

Item Type: Journal Article
Publication: IEEE Transactions on Industry Applications
Publisher: Institute of Electrical and Electronics Engineers
Additional Information: ©2005 IEEE. 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.
Keywords: Equivalent circuit of Marx generator;fall time;high-voltage (HV) nanosecond (ns) pulses;Marx generator;nanosecond (ns) electromagnetic pulse (EMP) generator;peaking capacitor;rise time
Department/Centre: Division of Electrical Sciences > High Voltage Engineering (merged with EE)
Date Deposited: 13 Jul 2005
Last Modified: 19 Sep 2010 04:19
URI: http://eprints.iisc.ac.in/id/eprint/3323

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