DocumentCode :
1458058
Title :
Effect of a conducting shield on the inductance of an air-core solenoid
Author :
Simpson, Ted L.
Author_Institution :
Dept. of Electr. & Comput. Eng., South Carolina Univ., Columbia, SC, USA
Volume :
35
Issue :
1
fYear :
1999
fDate :
1/1/1999 12:00:00 AM
Firstpage :
508
Lastpage :
515
Abstract :
A magnetostatic integral equation for the current induced by a solenoidal inductor in the conducting wall of a closed, perfectly conducting cylindrical shield was solved by the method of moments and point matching. The induced current was then used to determine the self-inductance of the solenoid. A chart of the ratio of the shielded inductance to that in free space was produced to aid in the design of practical air-core inductors. In addition, Wheeler´s well-known formula for the free-space inductance of a single-layer solenoid was shown to be sufficiently accurate to serve as a basis for the design of practical coils if the effect of the shield, available from the chart, is included
Keywords :
inductance; inductors; integral equations; magnetostatics; method of moments; shielding; solenoids; Wheeler formula; air-core inductors; air-core solenoid; conducting shield; free-space inductance; induced current; magnetostatic integral equation; method of moments; perfectly conducting cylindrical shield; point matching; self inductance; shielded inductance; single-layer solenoid; Coils; Frequency; Inductance; Inductors; Integral equations; Magnetic flux; Magnetic shielding; Magnetostatics; Solenoids; Toroidal magnetic fields;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.737474
Filename :
737474
Link To Document :
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