Design of permanent magnet linear synchronous motor stator to improve magnetic flux density profile toward high thrust density performance

Abstract

The Permanent Magnet Linear Synchronous Motor (PMLSM) is designed in this paper to solve the drawbacks of the previous designed PMLSM. The previous designed PMLSM has magnetic flux density, B saturation at lower rated current, I. Therefore, to overcome the saturation of the magnetic flux density, the stator of the PMLSM is designed. Apart from that, the design of the stator help to increase the ratio of thrust, F to cogging force, F cog. The design of PMLSM is completed in two stages where in the first stage the best model chosen is the model of t y2 = 3 mm. The thrust of the model has reduced by 14% from the previous designed PMLSM. The model designed and chosen in second stage is compared with the previous designed PMLSM in terms of it performance index. The designed PMLSM has improved in terms of motor constant square density, G compared to the previous designed PMLSM with the increment of 2%.