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No.3(pp.77-107)

Home > Issues > Volume 6 (2001) > No.3(pp.77-107)

Effect of Stator Slotting in the Magnetic Field Distribution of Linear Brushless Permanent Magnet Motor

Journal of Magnetics, Volume 6, Number 3, 30 Sep 2001, Pages 101-107

Myung-Jin Chung(Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology), M. G. Lee(Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology), S. Q. Lee,(Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology), Dae-Gab Gweon*

(Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)

Abstract

A model to describe the effect of stator slotting in the airgap region of a linear brushless permanent magnet motor (LBLPMM) is proposed for analytical prediction of magnetic field distribution. It is a two-dimensional model based on superposition of the effect of stator slotting and main field due to permanent magnet (PM) without stator slotting. The effect of stator slotting is expressed in form of a generalized equation, which is obtained by numerical analysis and is a function of motor geometric parameters, so the proposed model effectively accounts for the effect of stator slotting in the airgap field distribution according to change of motor geometry or relative motion of stator and armature. Results of prediction from the proposed model are compared with corresponding finite element analysis.

Keywords: effect of stator slotting; magnetic field distribution; superpositions; motor

DOI:

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