Fabrication and operation testing of an air-cored pulse transformer for charging a high voltage pulse forming line

Yun Sik Jin, Young Bae Kim, Jong Soo Kim, Hong Je Ryoo, Chuhyun Cho, Geun Hee Rim, Soo Won Lim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A high voltage air-cored helical strip/wire type pulse transformer has been fabricated for charging of a high voltage pulse forming line. As a primary coil, copper strip of 25mm width was wound helically around a MC nylon cylinder. For a secondary coil, copper enameled wire of 1mm diameter was wound around conical cylinder in order to provide insulation between two windings. The coupling coefficient of 0.53 was obtained when two coils were combined coaxially in the insulation oil filled chamber. Voltage gain and energy transfer efficiency were investigated by varying the parameters of primary and secondary circuit. Test results shows that the voltage gain increases up to 17 with increasing the primary capacitance up to 200nF. And highest energy transfer efficiency of 44% was obtained when the dual resonant operation condition was nearly satisfied. The pulse transformer developed in this study can be used for charging the middle conductor of a Blumlein pulse forming line.

Original languageEnglish
Pages (from-to)939-944
Number of pages6
JournalTransactions of the Korean Institute of Electrical Engineers
Volume59
Issue number5
Publication statusPublished - 2010 May
Externally publishedYes

Keywords

  • Air-cored pulse transformer
  • Dual resonance
  • Energy transfer efficiency
  • Helical wire/strip
  • High voltage

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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