Fast primary energy storage based on linear transformer scheme

Bastrikov, A.N.; Kim, A.A.; Kovalchuk, B. M.; Kumpjak, E.V.; Loginov, S. V.; Manylov, V. I.; Visir, V.A.; Yakovlev, V.P.; Etlicher, B.; Chuvatin, Alexandre S.; Frescaline, L.; Leon, J.F.; Monjaux, P.; Kovács, Ferenc; Huet, D.; Bayol, F.

doi:10.1109/ppc.1997.679378

Cited by 29 publications

(9 citation statements)

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“…The lowest breakdown field is 173 kV/mm for n=7 insulator with a covering factor of 90%. Figure 8 shows the average breakdown field with error bars for 50% (n=5, 7,8,9,10), 70% (n=3, 4,5,8), 80% (n=3 to 6) and 90% (n=5, 7,8) in comparison with those for 100% coverage and n=1, 2, 3, 4, 5, 7, 10.…”

Section: % To 100% Covering Factorsmentioning

confidence: 99%

“…GLYCERIN-IMPREGNATED multi-layer polymer film insulation was first invented by Russian scientists during the late 1970's and early 1980's [1][2][3][4][5][6] for the linear transformer driver (LTD) as a primary pulsed power sources. Later in the 1990's and the first decade of this century, further creative developments, various research work and applications of the 0.1 to 1 s wave-front LTD have been accomplished by laboratories and institutes around the world [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Effects of gaseous defects on glycerin-impregnated multi-layer film insulation under impulse of 160-nanosecond wave-front

Zeng

Zheng

2015

IEEE Trans. Dielect. Electr. Insul.

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The breakdown behavior of high-purity-glycerin impregnated multi-layer polypropylene (PP) film insulation, with the existence of individually distributed visible tiny gaseous defects (defects due to gaseous inclusions) between the film layers, was investigated experimentally under high voltage impulse of 160-ns wave-front. The experimental results show that, for 100% winding coverage factor, the sample insulation of 10-layer PP film survived after 20 impulses of interval of several minutes at an electric field of 275 kV/mm. The breakdown field tends to decrease fast and linearly from about 500 kV/mm for 1-layer film, which is very close to the intrinsic breakdown field of the PP film, to about 330 kV/mm for 4 film layers. This tendency of falling of breakdown field becomes mild and then nearly staying as the number of film layers (n) increases from 4 to 10, indicating a flat decay law of n to the (-0.05-th) power. Furthermore, for 50%-90% covering factors, the average breakdown field is 254 kV/mm with 1-sigma deviation of 51 kV/mm when n ranges from 5 to 8, slightly decaying versus the reduction of covering factor by about 10%. The lowest breakdown field is 173 kV/mm in all cases for about 30 samples. The experimental data demonstrate that if visible tiny gaseous defects do not gather together into a long channel between film layers, no flashover will occur along film layer surface at a field of 15 kV/cm, otherwise flashover is inevitably initiated along the film-glycerin interface.

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Section: % To 100% Covering Factorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of gaseous defects on glycerin-impregnated multi-layer film insulation under impulse of 160-nanosecond wave-front

Zeng

Zheng

2015

IEEE Trans. Dielect. Electr. Insul.

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“…Another possibility to generate powerful high voltage and/or high current pulses is to use the Linear Transformer Driver (LTD) concept pioneered at the High Current Electronic Institute in Russia [1]. Technology in such generators is based upon direct transfer from low inductance capacitive storage and switches incorporated in cavities (or called also stages) to a vacuum line without any intermediate power compression stage.…”

Section: Introductionmentioning

confidence: 99%

Development of an air insulated fast LTD pulser for radiography application

Bayol¹,

Delplanque²,

Gaston³

et al. 2014

2014 IEEE 41st International Conference on Plasma Sciences (ICOPS) Held With 2014 IEEE International Conference on High-Power P

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AWE is looking to replace its current Mevex X-ray machine (~800kV, 35kA, 60ns pulse) to improve reliability and maintainability. A design using an LTD insulated with dry air at atmospheric pressure has been proposed by ITHPP. A testbed using 3 cavities, made from 2 bricks of two GA35460M 8nF, 100kV capacitors, a multigap multichannel switch and a magnetic core, has been developed and extensively tested. The 3 cavities have been fired on a single low inductance resistive load made from a single volume of electrolytic solution. With a ~4.2Ω load, the 3 cavities deliver under vacuum ~145kV, 35kA, in a 84ns pulse (at FWHM). The system proves to operate with high reliability, high reproducibility (<0.4%, 1σ in power) and very low jitter (<2ns, 1σ for the full system). The system and its subsidiaries (trigger system, premagnetization generator, charge and dump system, command-control) will be described and the experimental results presented. The design of the full generator, that will use 17 cavities in series to produce the 800kV output voltage on a vacuum insulated line and a 23-25Ω diode, is on-going and will also be presented. The machine should be capable of operating in negative and positive polarity to satisfy operational requirements given by AWE.

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“…Linear transformer driver (LTD) technology was developed at the High Current Electronics Institute (HCEI) in Tomsk, Russia [1]. There exist some applications like Z-pinch, hydrodynamic radiography, high power microwave, which require power pulse in the load with the width of ≈ 100 ns or less [2].…”

Section: Introductionmentioning

confidence: 99%

The Design and the First Test Results of a Fast LTD Stage

Chen

Zhou

et al. 2009

Acta Phys. Pol. A

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Linear transformer driver stages are designed to be used as a primary energy storage in high power pulsed generators. In this report, the design and test results of the linear transformer driver stage prototype that delivers ≈ 100 kA fast pulse with 133 ns FWHM into a ≈ 0.87 Ω resistive load are described. This stage consists of 20 (100 kV, 20 nF) storage capacitors that are arranged in 10 identical bricks located evenly around the axis of the stage. Each brick contains two capacitors, a multi-gap switch, and the output connector that transfers the energy to the resistive load. The outer diameter of the stage is ≈ 1.5 m, at a length of ≈ 20 cm. The stage is developed to demonstrate the possibility of the fast linear transformer driver technology to create high power pulsed generators.

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Fast primary energy storage based on linear transformer scheme

Cited by 29 publications

References 0 publications

Effects of gaseous defects on glycerin-impregnated multi-layer film insulation under impulse of 160-nanosecond wave-front

Effects of gaseous defects on glycerin-impregnated multi-layer film insulation under impulse of 160-nanosecond wave-front

Development of an air insulated fast LTD pulser for radiography application

The Design and the First Test Results of a Fast LTD Stage

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