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An inductive 700 MW high voltage pulse generator
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
2006 (English)In: IEEE Transactions on Plasma Science, ISSN 0093-3813, E-ISSN 1939-9375, Vol. 34, no 5, 1838-1845 p.Article in journal (Refereed) Published
Abstract [en]

A repetitive inductive 700-MW high-voltage pulsegenerator that delivers a 150-ns square pulse with 20-ns rise timeat 150 kV has been constructed. The pulse generator has a 1:10 aircore transformer connected to a 25-Ω pulse forming line (PFL).The transformer and the PFL are both constructed using highvoltagecables. The closing switch of the PFL is a spark gap thatis in a water tank together with the cable endings of the PFL andtransformer. The electric field at the cable endings is refractivelygraded by the high permittivity of the surrounding water. ThePFL is charged in 2.5 μs to 170 kV, and the electric field in theclosing switch of the PFL reaches 33 kV/mm until the thresholdvoltage is exceeded. The efficiency of the pulse generator is 40%.The authors believe that this concept can be up-scaled to a 25-GWgenerator operating at 500 kV. An electric circuit simulation ofa 25-GW pulse generator and an electrostatic simulation for arefractive cable ending are presented.

Place, publisher, year, edition, pages
2006. Vol. 34, no 5, 1838-1845 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-94206DOI: 10.1109/TPS.2006.881279OAI: oai:DiVA.org:uu-94206DiVA: diva2:167977
Note

Special Issue on Pulsed Power

Available from: 2006-04-06 Created: 2006-04-06 Last updated: 2017-01-25Bibliographically approved
In thesis
1. Inductive Pulse Generation
Open this publication in new window or tab >>Inductive Pulse Generation
2006 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Pulsed power generators are a key component in compact systems for generation of high-power microwaves (HPM). HPM generation by virtual cathode devices such as Vircators put high demands on the source. The rise time and the pulse length of the source voltage are two key issues in the generation of HPM radiation. This thesis describes the construction and tests of several inductive high power pulse generators. The pulse generators were designed with the intent to deliver a pulse with fast rise time and rectangular voltage. Therefore, the pulse generators are all based on discharges of transmission lines. The transmission lines used in the pulse generators are modern high voltage cables normally used in power transmission. All tested pulse generators have step up transformers as intermediate magnetic energy storage. Further, the pulse generators have contributed to the knowledge of compact designs. Closing switches is another important device in pulse generator architectures. In general, high power switching involving large currents and high voltages requires the use of robust switches. The switches used in the pulse generators of this thesis are of gas and liquid type.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2006. 93 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 159
Keyword
Technology, Pulsed Power, Inductive Pulse Generator, High Voltage, Semicon, XLPE, TEKNIKVETENSKAP
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-6699 (URN)91-554-6506-4 (ISBN)
Public defence
2006-04-28, Polhemsalen, Ångströmslaboratoriet, Uppsala, 13:15
Opponent
Supervisors
Available from: 2006-04-06 Created: 2006-04-06 Last updated: 2013-07-26Bibliographically approved

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Isberg, JanBernhoff, HansLeijon, Mats

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