Investigation on transient overvoltages in a large winding for a fusion device during insulation tests

Author

Bellina, F. ; Chitarin, G. ; Zollino, G.

Author_Institution

Dept. of Electr. Eng., Padova Univ., Italy

Volume

30

Issue

4

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

2558

Lastpage

2561

Abstract

In this paper an application of a method for the analysis of internal transient voltages in large windings is presented. The method, developed to study the voltage distribution inside simple coils, is based on the representation of the coil as a lumped circuit. It has been applied to the Poloidal Field Block I1 of the RFX machine, which is composed of 8 independent coils with 96 turns in total. Due to the turns have been represented with global equivalent parameters, in order to reduce the model size and the computation time. A number of simulations have been performed, whose results are in good agreement with the measurements taken during tests, so that this model has been used for the interpretation of a breakdown occurred to Block I1 during acceptance tests

Keywords

electromagnets; fusion reactor theory and design; overvoltage; Poloidal Field Block I1; RFX machine; acceptance test breakdown; fusion device; insulation tests; internal transient voltages; large winding; lumped circuit; transient overvoltages; voltage distribution; Coils; Computational modeling; Insulation testing; Magnetic confinement; Magnetic flux; Solid modeling; Surges; Toroidal magnetic fields; Transient analysis; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.305800

Filename

305800