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提出一种绕组周向分布圆筒型初级永磁直线电机(tubular primary permanent magnet linear machine, TPPMLM).与传统圆筒型初级永磁直线电机相比,该电机采用集中式绕组,每相绕组周向分布,初级铁心齿部及轭部由矽钢片一次叠压而成,初级制造工艺简单.同时,永磁体位于初级,次级仅由导磁铁心组成,可降低长距离驱动系统成本.该文阐述该电机的结构特点,给出工作原理,并分别利用磁路法及等效二维有限元法建立单元电机等效磁路模型及仿真模型,对静态特性分析,包括磁场、反电动势、定位力及电磁推力等.三维有限元模型及样机实验结果分别验证等效二维有限元模型的有效性及拓扑结构设计方法的正确性,同时,反电动势测试结果表明该拓扑不存在纵向端部效应导致的各相反电动势不对称问题.“,”A tubular primary permanent magnet linear machine(TPPMLM) with circumferential distribution of winding was proposed. Compared with the traditional TPPMLM, the machine used a concentrated winding which was circumferentially distributed in the primary, the tooth and yoke of the primary iron core could be shaped by pressing die at once with silicon steel sheet, the manufacturing process of primary was simple. Meanwhile, the PMs were located at the primary, the secondary was composed of the magnetic iron core, which could reduce the cost for long distance driving systems. This paper expounded the structure characteristics. Working principle was given. The equivalent magnetic circuit model and the simulation model of unit machine were established by using the magnetic circuit method and equivalent 2D FEM. The static characteristics, which included the magnetic field, the no-load back-EMF, the detent force and the electromagnetic thrust, were analyzed. The 3D FEM and the experimental results verify the validity of equivalent 2D FEM and the correctness of the design method of the topology, respectively. In addition, the back-EMF test results shows that the topology does not exist the asymmetry problem of the back-EMF caused by the longitudinal end effect.