Measurements at the ISL-EMA 1 railgun facility

Wey, J.; Peter, H.

doi:10.1109/20.101018

Cited by 8 publications

(3 citation statements)

References 2 publications

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“…The voltage drop was measured using a voltage dividing method [5]. With the aim of determining the onstate power loss of a high power semiconductor device during switching, this method allows a higher voltage resolution as compared to conventional high voltage probes.…”

Section: A Prototype Devicementioning

confidence: 99%

Performance study of a novel 13.5 kV multichip thyristor switch

Scharnholz

Brommer

Zorngiebel

et al. 2009

2009 IEEE Pulsed Power Conference

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The performance of a novel multichip thyristor switch has been investigated under different pulse conditions. The 13.5 kV switch, jointly developed by ISL and ABB, showed a dI/dt of up to 20 kA/µs. Thus, the dI/dt capability of the multichip device equals that of a conventional stack made up of three discrete fastswitching thyristors. Further tests, focusing on the commercial multichip device ABB 5SPB 36Z1350, which is now available in an industry standard ceramic presspack housing, revealed no distinct performance difference to the prototype device.

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Section: A Prototype Devicementioning

confidence: 99%

Performance study of a novel 13.5 kV multichip thyristor switch

Scharnholz

Brommer

Zorngiebel

et al. 2009

2009 IEEE Pulsed Power Conference

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“…This deformation is more important at the level of the current injection points where the current value and thus the repulsion force are highest. Material studies have shown that the rails sustain no plastic deformation and that the caliber variation is only due to the housing deformation [8].…”

Section: Middle-caliber Railguns (30 40 and 50 Mm)mentioning

confidence: 99%

“…A lot of ISL railguns have been equipped with glass fiber wound (GFW) housings [6], [7], [8]. This material is well suited to the housing of small-energy railguns: it is a lightweight, cheap and insulating material which avoids losses due to eddy currents in the housing.…”

Section: B Glass Fiber Wound Tubesmentioning

confidence: 99%

Comparative study of railgun housings made of modern fiber-wound materials, ceramic or insulated steel plates

Lehmann¹,

Vo²,

Wenning³

2004 12th Symposium on Electromagnetic Launch Technology, 2004.

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The acceleration in electromagnetic railguns of projectiles with a mass of several hundreds of grams up to velocities ranging between 2000 m/s and 3000 m/s requires currents with intensities of several MA.In the ISL rail launchers the repulsion forces created by these currents acting on the rails of the launcher can reach values in the order of 20 MN/m. The housing of the launcher has to withstand these high mechanical stresses to maintain the rails in position and thus to keep the caliber constant. In this paper a comparative study of different possibilities of housings is presented. The limits of the actual fiber wound materials are shown and a selection of new insulating materials capable of withstanding the mechanical stresses is given.We also present the concept of a housing made of insulated steel plates allowing a good mechanical stiffness combined with a minimum loss due to eddy currents in steel. In particular, we show that the good mechanical behavior of the steel plate housing makes it possible to reach the same overall efficiency as that obtained with a fiber-wound material housing.

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