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Content Provider | IEEE Xplore Digital Library |
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Author | Bohn, G. |
Copyright Year | 1965 |
Abstract | As all EMS-vehicle magnets of the Transrapid family have heretofore been equipped with massive iron cores acting on massive armature rails eddy currents due to varying coil currents and air gaps must be taken into account if force (F) and current (J) have to be calculated correctly. A method is presented which allows their calculation for infinitely small harmonic voltage (dV) and gap variations (dG). In this case we have a linear problem to solve. We establish a two dimensional model of the magnet which contains the essential data of the magnet (air gap, pole width, amp.turns, average length of force lines) and which can be solved by simple fourier series expansion. In order to fit the results for frequency zero to experimental or theoretical force characteristics, we define the two relative permeabilities |
Sponsorship | IEEE Magnetics Society |
Starting Page | 1412 |
Ending Page | 1414 |
Page Count | 3 |
File Size | 323923 |
File Format | |
ISSN | 00189464 |
Volume Number | 13 |
Issue Number | 5 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 1977-09-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Frequency Levitation Magnets Voltage Iron Magnetic cores Rails Eddy currents Coils Air gaps |
Content Type | Text |
Resource Type | Article |
Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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