Eddy current and skin effect in edgewise wound copper coils

Author

Barton, R.K.

Author_Institution

GE Drives Motor & Generator, Erie, PA, USA

Volume

25

Issue

4

fYear

1989

fDate

7/1/1989 12:00:00 AM

Firstpage

3016

Lastpage

3018

Abstract

Solutions for a 13-turn edgewise-wound copper coil have been obtained using linear eddy-current and skin-effect finite-element programs. The finite-element solutions for a frequency range of 60 to 360 Hz are used to calculate losses for the case of air and constant-permeability iron cores for the edgewise-wound coil. The finite-element solutions are compared to test values with and without an iron core. Calculated AC-to-DC resistance ratios compare favorably with test results for air cores and depend on the interlamination resistance for iron cores. Solutions for a shorted turn are examined using the eddy-current and skin-effect code. The shortest-turn solutions illustrate that the field distortion near the coil allows the shorted turn to be identified

Keywords

coils; eddy currents; finite element analysis; skin effect; 60 to 360 Hz; AC-to-DC resistance; air; constant-permeability iron cores; edgewise wound copper coils; finite-element solutions; interlamination resistance; linear eddy-current; losses; skin-effect finite-element programs; Coils; Copper; DC motors; Eddy currents; Finite element methods; Frequency; Iron; Skin effect; Testing; Wounds;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.34355

Filename

34355