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Forces in screen-secondary linear reluctance motors

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2 Author(s)
Edwards, J.D. ; Sch. of Eng. & Appl. Sci., Sussex Univ., Brighton, UK ; Preston, M.

In a screen-secondary linear reluctance motor (LRM), a nonmagnetic conducting barrier separates the primary from the secondary. A new model of segmental-secondary LRMs is presented in which the secondary induced magnetization is represented by a current sheet related to the d- and q-axis components of the air-gap flux density; this is equivalent to the earlier use of a scalar magnetic potential. Induced currents in the barrier are represented by a current sheer as in linear induction motors. Expressions are given for the air-gap flux density, the tractive force, and the normal force. Graphs are presented for the variation of force with velocity for an experimental LRM with a stainless-steel barrier

Published in:
Magnetics, IEEE Transactions on  (Volume:24 ,  Issue: 6 )

Date of Publication: Nov 1988

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