Slot/Pole Ratio Design of Tubular Permanent Magnet Linear Synchronous Motor
In terms of various applications of linear motor, there are different design objectives with varying concerns. In this paper, the objective is to obtain the slot/pole ratio for tubular permanent-magnet linear synchronous motor (TPMLSM). Direct-axis current analysis and finite element technique are utilized to investigate the optimal slot/slot ratio design of the TPMLSM. Based on electrical angle drift of slots between two neighboring permanent magnets, the slot/pole ratio (SPR), one of the key factors in design, is deduced by direct-axis current analysis. In contrast to those experiment methods, the proposed technique is convenient and swift; moreover it is proven that the method is efficient by 2-D axisymmetic finite element analysis.
G. H. Wang "Slot/Pole Ratio Design of Tubular Permanent Magnet Linear Synchronous Motor", Advanced Materials Research, Vols. 179-180, pp. 1303-1308, 2011