Numerical Analysis of the Output-Pulse Shaping Capability of Linear Transformer Drivers

LIU Peng; SUN Fengju; YIN Jiahui; QIU Aici

Plasma Science and Technology > 2011 > 13(2): 246-251.

LIU Peng, SUN Fengju, YIN Jiahui, QIU Aici. Numerical Analysis of the Output-Pulse Shaping Capability of Linear Transformer Drivers[J]. Plasma Science and Technology, 2011, 13(2): 246-251.

Citation:

LIU Peng, SUN Fengju, YIN Jiahui, QIU Aici. Numerical Analysis of the Output-Pulse Shaping Capability of Linear Transformer Drivers[J]. Plasma Science and Technology, 2011, 13(2): 246-251.

Citation:

LIU Peng, SUN Fengju, YIN Jiahui, QIU Aici. Numerical Analysis of the Output-Pulse Shaping Capability of Linear Transformer Drivers[J]. Plasma Science and Technology, 2011, 13(2): 246-251.

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Numerical Analysis of the Output-Pulse Shaping Capability of Linear Transformer Drivers

1.
School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2.
Northwest Institute of Nuclear Technology, Xi’an 710024, China

Funds: supported by National Natural Science Foundation of China (Nos. 50637010, 51077111), and the State Key Laboratory of Electrical Insulation and Power Equipment of Xi’an Jiaotong University (EIPE 09207).

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Corresponding author:
LIU Peng, TEL: 86-29-84767382 E-mail: xjliupeng@sina.com

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Abstract

Abstract

Output-pulse shaping capability of a linear transformer driver (LTD) module under different conditions is studied, by conducting the whole circuit model simulation by using the PSPICE code. Results indicate that a higher impedance profile of the internal transmission line would lead to a wider adjustment range for the output current rise time and a narrower adjustment range for the current peak. The number of cavities in series has a positive effect on the output-pulse shaping capability of LTD. Such an improvement in the output-pulse shaping capability can primarily be ascribed to the increment in the axial electric length of LTD. For a triggering time interval longer than the time taken by a pulse to propagate through the length of one cavity, the output parameters of LTD could be improved significantly. The present insulating capability of gas switches and other elements in the LTD cavities may only tolerate a slightly longer deviation in the triggering time interval. It is feasible for the LTD module to reduce the output current rise time, though it is not useful to improve the peak power effectively.
- linear transformer drivers (LTD),
- circuit model,
- pulsed power,
- transmission line,
- impedance profile,
- trigger delay.

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