NDLI: Forces in thin-plate linear reluctance motors

Content Provider	IEEE Xplore Digital Library
Author	Edwards, J.D. Preston, M.A.
Copyright Year	1965
Abstract	An analytical model is presented for linear reluctance motors (LRM) with thin-plate secondaries where the plate is magnetically saturated in normal operation. Finite-element field modeling confirms that the plate has regions of nearly constant magnetization which can be represented by equivalent surface currents. The model correctly predicts the variation of force with current for a load-angle of 45 degrees ; the greatest discrepancy is only 6%. The model overestimates the change in the normal force with load-angle, with maximum errors of +14% at a load-angle of 0 degrees and -24% at a load-angle of 90 degrees . Preliminary measurements from an experimental machine gave similar results. The forces in the model are almost linear functions of current, whereas the forces in a conventional LRM vary with square of the current.<>
Sponsorship	IEEE Magnetics Society
Starting Page	2550
Ending Page	2552
Page Count	3
File Size	228632
File Format	PDF
ISSN	00189464
Volume Number	26
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Reluctance motors Analytical models Equations Magnetic flux Saturation magnetization Magnetic materials Current density Materials handling Accuracy Magnetic fields
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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