Abstract
This paper presents a novel constructive three-phase six-slotted permanent magnet linear synchronous motor (PMLSM) based on the approach of combinational iron-cored primary. In order to develop a small scale, large thrust and high thrust performance slotted PMLSM, a construct of separated three two-slotted armature iron-cores for each phase winding is proposed. The influence of couple between iron-cores on end-effect force is investigated in details. Optimal design of iron-core parameters is conducted and static thrust characteristics are extensively evaluated by finite-element method and harmonic analysis. Thrust ripple is reduced 4.85 times compared to a conventional 3-phase 6-slot PMLSM. The novel constriction can be applied to develop small-scale, large thrust and high control performance PMLSM, and extend slotted PMLSM application to small-scale automatic systems to replace slot-less PMLSM.
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