Numerical Simulation of Current Density Distributions in Graded Laminated Armatures

Author

Liu, Yuanqing ; Li, Jun ; Chen, Duo ; Yuan, Jiansheng

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing

Volume

43

Issue

1

fYear

2007

Firstpage

163

Lastpage

166

Abstract

The calculation of the current density distribution in the armature is fundamental in the simulation of railguns. The distribution of current density in the graded laminated armature with different conductivity in each lamination is simulated and investigated in this paper by the finite-element method. The simulation results show that the skin effect and the velocity skin effect can be weakened by the graded laminated armature, so that a uniform distribution of current density may be obtained by employing the graded laminated armature with a suitable assembly of different conductors. Some experiment results are also given in this paper to validate the simulation results

Keywords

current density; current distribution; finite element analysis; railguns; conductors; current density distributions; finite element method; graded laminated armatures; railguns; skin effect; Assembly; Conductivity; Current density; Finite element methods; Lamination; Numerical simulation; Power system simulation; Railguns; Rails; Skin effect; Current density; finite-element method; graded laminated armature; railgun;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.887653

Filename

4033075