By Topic

Electrodynamic magnetic suspension-models, scaling laws, and experimental results

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
M. T. Thompson ; Worcester Polytech. Inst., MA, USA

A simple experiment illustrating the principles of electrodynamic magnetic suspension is described and test results are given. A disk-shaped coil made of insulated copper magnet wire and energized with 60 Hz AC line voltage is levitated in a stable equilibrium position above a wide aluminum plate. The mechanisms generating levitation force are identified by the use of Maxwell's equations. A lumped-parameter inductance model is used to model magnetic energy storage. By using energy methods, the current necessary to achieve coil lift-off and levitation is estimated, with good results. A stability analysis is done which shows that the levitation is stable, but underdamped. Thermal models are also developed for determining temperature rise in the coil. The magnetic scaling law is developed which shows that larger magnetic structures are more efficient in energy conversion than small ones

Published in:

IEEE Transactions on Education  (Volume:43 ,  Issue: 3 )