Analytical field calculations for various helical conductors

Author

Tominaka, Toshiharu

Author_Institution

RIKEN, Saitama, Japan

Volume

14

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

1838

Lastpage

1841

Abstract

Analytical methods have been developed for the electromagnetic calculation of helical coils, the inductance of a twisted bifilar lead, and the current distribution of commonly used twisted superconducting multistrand cables and composites. These methods are based on the analytical expressions of the magnetic field and the vector potential resulting from a single helical thin conductor. The current distributions among each strand or filament within a twisted superconducting multistrand cable or multifilamentary composite are obtained using the principle of a minimum magnetic energy in the case of insulated strands or filaments and the condition of zero enclosed magnetic flux for noninsulated strands or filaments.

Keywords

current distribution; electromagnetic field theory; magnetic fields; multifilamentary superconductors; superconducting cables; superconducting coils; analytical field calculation; current distribution; electromagnetic analysis; electromagnetic calculation; helical coils; helical conductors; magnetic field; minimum magnetic energy; multifilamentary composite; noninsulated strand; superconducting composites; superconducting multistrand cables; twisted bifilar lead; vector potential; zero-enclosed magnetic flux; Conductors; Current distribution; Electromagnetic analysis; Electromagnetic induction; Magnetic analysis; Magnetic flux; Multifilamentary superconductors; Superconducting cables; Superconducting coils; Superconducting filaments and wires; Electromagnetic analysis; helical conductors; superconducting composites; superconducting multistrand cables;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2004.830878

Filename

1325167