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Effect of the change in the load resistance on the high voltage pulse transformer of the intense electron-beam accelerators

Rev. Sci. Instrum. 80, 115110 (2009); doi:10.1063/1.3263902

Published 20 November 2009

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Xin-bing Cheng, Jin-liang Liu, Bao-liang Qian, Yu Zhang, and Hong-bo Zhang
College of Photoelectrical Science and Engineering, National University of Defense Technology, Hunan 410073, People's Republic of China
A high voltage pulse transformer (HVPT) is usually used as a charging device for the pulse forming line (PFL) of intense electron-beam accelerators (IEBAs). Insulation of the HVPT is one of the important factors that restrict the development of the HVPT. Until now, considerable effort has been focused on minimizing high field regions to avoid insulation breakdown between windings. Characteristics of the HVPT have been widely discussed to achieve these goals, but the effects of the PFL and load resistance on HVPT are usually neglected. In this paper, a HVPT is used as a charging device for the PFL of an IEBA and the effect of the change in the load resistance on the HVPT of the IEBA is presented. When the load resistance does not match the wave impedance of the PFL, a high-frequency bipolar oscillating voltage will occur, and the amplitude of the oscillating voltage will increase with the decrease in the load resistance. The load resistance approximates to zero and the amplitude of the oscillating voltage is much higher. This makes it easier for surface flashover along the insulation materials to form and decrease the lifetime of the HVPT. ©2009 American Institute of Physics
History: Received 23 June 2009; accepted 24 October 2009; published 20 November 2009
Permalink: http://link.aip.org/link/?RSINAK/80/115110/1

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KEYWORDS and PACS

Keywords
PACS
  • 84.30.Jc
    Power electronics; power supply circuits
  • 29.20.-c
    Accelerators
  • 84.70.+p
    High-current and high-voltage technology: power systems; power transmission lines and cables
  • YEAR: 2010

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PUBLICATION DATA

ISSN:
0034-6748 (print)   1089-7623 (online)
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