영구자석 리니어 동기모터의 단부코깅력 저감에 관한 연구

Abstract

Attends home automate of recent years, improved performance of Linear Motor is more required. Control is excellent among Linear Motor, and the PM-LSM of high efficiency drive is being applied as operating source. In order to resolve the problem of high cost, we have proposed the stationary discontinuous armature PM-LSM in which the armature is engaged only when accelerated and decelerated operations are necessary, when PM-LSM is used with long-distance transportation systems in factories However, the stationary discontinuous armature PM-LSM contains the outlet edges which always exist as a result of the discontinuous arrangement of the armature. For this reason, cogging force generated between the “entrance end” and the “exit end” has become a problem. Therefore, we have examined the outlet edge cogging force by installing the auxiliary apparatus at the armature’s outlet edge in order to minimize the cogging force generated when the armature is arranged discontinuously. This paper presents the results of 2-D numerical analysis by FEM of the cogging force exerted by the outlet edge.