Abstract: Aiming at the issues of sand and gravel easily entering the air gap of the integrated rim thruster of ship, as well as the difficulties in disassembly and maintenance, an integrated propeller structure which was easily disassembled and assembled based on flux-switching motor was proposed. Firstly, the working principle of the flux-switching motor was analyzed, and the problems faced by the application of flux-switching motors in rim-driven thruster were discussed. The design idea of propulsion motor was put forward to reduce the influence of rotor tooth height by increasing the number of motor poles. Secondly, the structure design of the integrated thruster was discussed in detail. A kind of integrated propeller structure which was convenient to disassemble and assemble was put forward through the ring winding, concentric circle design and side slot design. Finally, the working performance of the propulsion motor was verified by Maxwell simulation. In particular, the difference of electromagnetic characteristics of three winding structures were compared, and the effectiveness of the propeller with this structure was demonstrated.

Key words: ship engineering; flux-switching motor; rim-driven thruster; easy-to-disassemble structure; motor parameter optimization

摘要： 针对船舶集成轮缘推进器气隙容易进入砂砾，拆装困难维护不便问题，提出了一种基于磁通切换电机的易拆装集成螺旋桨结构。首先分析了磁通切换电机的工作机理，讨论了磁通切换电机应用于轮缘推进器所面临的问题，提出了通过增加电机极数以减小转子齿高影响的推进电机设计思路。其次详细分析了集成推进器的结构设计问题，通过环形绕组、同心环设计、侧面开槽等设计，提出了一种易拆装的集成螺旋桨结构。最后通过Maxwell仿真验证了推进电机的工作性能，特别比较了3种绕组结构下电磁特性差异，论证了该结构螺旋桨的有效性。

关键词: 船舶工程； 磁通切换电机；轮缘推进器；易拆卸结构；电机参数优化