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Eddy current distribution and lift force for finite MAGLEV strips

Journal Article:

Abstract

The transverse distribution of induced eddy currents across a flat conducing strip of finite width, due to a rectangular dc magnet moving above it, was modelled experimentally, and was compared with that calculated for an infinite sheet. The electrodynamic suspension was simulated by means of a stationary ac-excited copper magnet suspended above an aluminum strip, and the induced surface current density was measured by a voltage pickup probe connected to a lock-in amplifier. The effect of reducing strip width is examined and shown to produce high current densities close to the edges. These results are related to the variation of lift force with strip width, determined by impedance modelling. A slight enhancement of lift is evident for intermediate strip widths.
Publication Date:
Jul 01, 1974
Product Type:
Journal Article
Reference Number:
EDB-77-147060
Resource Relation:
Journal Name: Can. J. Phys.; (Canada); Journal Volume: 52:13
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; SUPERCONDUCTING MAGNETS; EDDY CURRENTS; CURRENT DENSITY; FUNCTIONAL MODELS; LEVITATION; TESTING; CURRENTS; ELECTRIC CURRENTS; ELECTRICAL EQUIPMENT; ELECTROMAGNETS; EQUIPMENT; MAGNETS; SUPERCONDUCTING DEVICES; 420201* - Engineering- Cryogenic Equipment & Devices
OSTI ID:
7214785
Research Organizations:
Queen's Coll., Kingston, Ont.
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: CJPHA
Submitting Site:
TIC
Size:
Pages: 1203-1208
Announcement Date:

Journal Article:

Citation Formats

Atherton, D L, Eastham, A R, Fombrun, C, and Chong, M. Eddy current distribution and lift force for finite MAGLEV strips. Canada: N. p., 1974. Web.
Atherton, D L, Eastham, A R, Fombrun, C, & Chong, M. Eddy current distribution and lift force for finite MAGLEV strips. Canada.
Atherton, D L, Eastham, A R, Fombrun, C, and Chong, M. 1974. "Eddy current distribution and lift force for finite MAGLEV strips." Canada.
@misc{etde_7214785,
title = {Eddy current distribution and lift force for finite MAGLEV strips}
author = {Atherton, D L, Eastham, A R, Fombrun, C, and Chong, M}
abstractNote = {The transverse distribution of induced eddy currents across a flat conducing strip of finite width, due to a rectangular dc magnet moving above it, was modelled experimentally, and was compared with that calculated for an infinite sheet. The electrodynamic suspension was simulated by means of a stationary ac-excited copper magnet suspended above an aluminum strip, and the induced surface current density was measured by a voltage pickup probe connected to a lock-in amplifier. The effect of reducing strip width is examined and shown to produce high current densities close to the edges. These results are related to the variation of lift force with strip width, determined by impedance modelling. A slight enhancement of lift is evident for intermediate strip widths.}
journal = {Can. J. Phys.; (Canada)}
volume = {52:13}
journal type = {AC}
place = {Canada}
year = {1974}
month = {Jul}
}