以永磁材料作为磁极的起动机，称为永磁起动机。它取消了传统起动机中的励磁绕组和磁极铁心，使起动机的结构简化，体积和质量大大减小，可靠性提高，并节省了金属材料。
不同永磁材料与磁极结构在轿车永磁起动机中的对比研究--奥杰汽车网 关键词】 永磁起动机; 磁极结构; 永磁材料; [gap=525]Key words】 PM starter motor; magnetic pole structure; permanent magnet material;
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The optimization project is used in the design of permanent magnet starter motor with auxiliary pole. The result can be available in a short time and reduce the cost efficiently.
文中将DEA算法应用于带辅助极永磁起动机的优化设计，显著降低了有效材料成本，且收敛速度较快。
参考来源 - 一种新型全局优化算法在电机设计中的应用 The Application of a New Global Optimization Algorithm to the Design of Electrical Machines·2,447,543篇论文数据，部分数据来源于NoteExpress
并从永磁起动机设计的角度出发，提出了亟待解决的技术问题。
From the point of starter designing, it gives out the technical problems necessary to be solved.
永磁起动机机壳长度比磁极长度大得多，且轭部磁路非常饱和。
In permanent magnet starter motor, the length of housing is greater than that of the magnetic pole, and the stator yoke is highly saturated.
永磁材料和磁极结构的选择直接关系到永磁起动机设计的成败，是永磁起动机设计者首先应当解决的问题，目前尚无完善的选择原则。
The selection of PM material and magnetic structure is important for design of PM starter motor. It is the most important problem for designer to solve, but there is no perfect standard to be adopted.
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