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300-kA Fast Linear Transformer Driver Stage

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4 Author(s)
Tianxue Liang ; Northwest Institute of Nuclear Technology, Xi'an, China ; Xiaofeng Jiang ; Fengju Sun ; Aici Qiu

A modular linear transformer driver (LTD) is a novel fast-discharge high-pulsed power source for primarily stored energy. In LTDs, a large number of stages (or cavities) can be connected in series or in parallel conveniently to directly generate high power pulses of 50-200 ns with the required voltage or current. This paper introduces an LTD stage developed by us recently. This LTD stage consists of 14 bricks in parallel. Each brick contains two 40-nF capacitors and a compact multigap gas spark switch in series. The switch is a modification of our original version, and the diameter and the height of which have been reduced to 98 and 127 mm, respectively. The circuit model of this stage is established in PSPICE, and its output parameters are obtained through simulation. Driving a rough-matched resistive load of 0.27 Ω, its output current peak is 300 kA with an overall rise time of about 110 ns at a charged voltage of the capacitors of about ±90 kV, agreeing well with its simulation result.

Published in:

IEEE Transactions on Plasma Science  (Volume:40 ,  Issue: 11 )