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Numerical Simulation of Current Density Distributions in Graded Laminated Armatures

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4 Author(s)
Yuanqing Liu ; Dept. of Electr. Eng., Tsinghua Univ., Beijing ; Jun Li ; Duo Chen ; Jiansheng Yuan

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

Published in:

Magnetics, IEEE Transactions on  (Volume:43 ,  Issue: 1 )

Date of Publication:

Jan. 2007

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