Development of an Air-Core Cylindrical HV Pulse Transformer

Author

Kim, S.C. ; Heo, H. ; Park, S.S. ; Kim, S.H. ; Nam, S.H.

Author_Institution

Pohang Accelerator Lab., Gyungbuk

fYear

2006

fDate

14-18 May 2006

Firstpage

127

Lastpage

130

Abstract

The structure of an air-core cylindrical high voltage pulse transformer is relatively simple, but considerable attention is needed to prevent breakdown between transformer windings. Since the thickness of the spiral windings is on the order of sub-millimeter, field enhancement at the edges of the windings is very high. Therefore, it is important to have proper electrical insulations to prevent breakdown at the edges and to make the system compact. Major design parameters of the transformer are primary inductance of 170 nH, and output voltage of about 500 kV. The fabricated transformer is 45 cm in length and 30 cm in diameter. The fabricated transformer is tested up to 450 kV with a Marx generator. In this paper, we will discuss design and fabrication procedures, and preliminary test results of the air-core cylindrical HV pulse transformer

Keywords

air; insulation testing; power transformer insulation; power transformer testing; pulsed power supplies; transformer cores; transformer windings; 30 cm; 45 cm; Marx generator; air-core cylindrical HV pulse transformer fabrication; electrical insulation; field enhancement; spiral transformer windings; transformer testing; Breakdown voltage; Dielectrics and electrical insulation; Electric breakdown; Fabrication; Inductance; Power transformer insulation; Pulse transformers; Spirals; Testing; Windings;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Modulator Symposium, 2006. Conference Record of the 2006 Twenty-Seventh International

Conference_Location

Arlington, VA

Print_ISBN

1-4244-0018-X

Electronic_ISBN

1-4244-0019-8

Type

conf

DOI

10.1109/MODSYM.2006.365198

Filename

4216150