Effect of Cavity-Triggering Sequences on Output Parameters of LTD-Based Drivers

Author

Liu, Peng ; Sun, Fengju ; Yin, Jiahui ; Liang, Tianxue ; Jiang, Xiaofeng ; Liu, Zhigang ; Qiu, Aici

Author_Institution

State Key Lab. of Electr. Insulation & Power Equip., Xi´´an Jiaotong Univ., Xi´´an, China

Volume

39

Issue

5

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

1247

Lastpage

1253

Abstract

This paper explores the feasibility of improving the load current parameters by optimizing the cavity-triggering sequences for a linear transformer driver (LTD) module with 60 cavities connected in series. The mechanism behind this was analyzed. The results demonstrate that it is necessary for the improvement in the output parameters of the LTD to postpone the closure of the switches in the cavities later than the arrival of the electromagnetic pulse propagating downstream. However, this requires the switches to withstand pulsed voltages higher than their charge voltage before closing. When the LTD switches withstood a pulsed voltage peak of about 400 kV for several tens of nanoseconds before closing, the LTD module could generate a current pulse with a rise time of 12.5 ns and a peak of 1340 kA on the matched load.

Keywords

electromagnetic pulse; power transformers; LTD-based driver; cavity-triggering sequence; current 1340 kA; electromagnetic pulse propagating downstream; linear transformer driver module; load current parameter; pulsed voltage peak; time 12.5 ns; Cavity resonators; Delay; Integrated circuit modeling; Magnetic cores; Power transmission lines; RLC circuits; Shape; Cavity-triggering sequence; circuit modeling; linear transformer driver (LTD); peak power; rise time;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2011.2120625

Filename

5741861