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access icon free Characteristic analysis of a trilateral permanent magnet linear synchronous motor with slotless ring windings

To meet the high requirements in transport systems, permanent magnet linear synchronous motor (PMLSM) has become an important field of research. A novel trilateral PMLSM with slotless ring windings is proposed, featuring high thrust and low ripple. The structure design of the novel trilateral PMLSM is introduced first. Then mathematical model of the primary with slotless ring windings is established and analysed, the magnetic fields excited by the permanent magnets in the secondary is studied, based on the equivalent magnetising current method. The analytical calculating results of the novel motor are validated by finite-element method, and a prototype is tested to validate the analytical results of this novel motor. The study provides the fundamental characteristic analysis of the novel trilateral PMLSM with slotless ring windings. This study is provided for the special section ‘Design, modeling and control of electric drives for transportation applications’ (VPPC 2016).

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