全电飞机用外转子SPMSM机壳结构轻量化设计  

Lightweight Design of Outer Rotor SPMSM Casing for All-Electric Aircraft

作　　者：王煦宁 于占洋[1] 张佳霖 李岩[1] WANG Xuning;YU Zhanyang;ZHANG Jialin;LI Yan(National Engineering Research Center for Rare-Earth Permanent Magnet Machine,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学国家稀土永磁电机工程技术研究中心,辽宁沈阳110870

出　　处：《电机与控制应用》2021年第10期51-57,共7页Electric machines & control application

基　　金：辽宁省教育厅科学研究项目(LJGD2019007)。

摘　　要：随着全电飞机大量使用,如何实现电机轻量化、提高功率密度从而满足更高性能要求,逐渐成为研究热门问题。以一台全电飞机用外转子表贴式永磁同步电机(SPMSM)为研究对象,基于有限元仿真对6063t6铝合金和钢2种材质下静态力学场进行了分析,确定选用更为轻质的6063t6铝合金材料。在安全系数为10的前提下,轻量化设计端盖厚度2 mm、机壳厚度5 mm。提出了一种镂空式机壳结构,并配合“蟹钳”式加强筋,成功将该结构的安全系数由5.5提高到10以上,优化后机壳成功减重51.92%。对比分析“蟹钳”式与“一字型”加强筋结构,验证了“蟹钳”式加强筋的优越性。结构优化后的电机,既满足轻量化设计又满足可靠运行要求。With the extensive use of all-electric aircraft,how to achieve lightweight motor and improve power density to meet higher performance requirements has gradually become a hot research issue.An outer rotor surface permanent magnet synchronous motor(SPMSM)used in all-electric aircraft is taken as the research object.Based on finite element simulation,the static mechanical field of 6063t6 aluminum alloy and steel is analyzed,and the lighter 6063t6 aluminum alloy is selected.Under the premise of safety factor of 10,end cover thickness is reduced to 2 mm and shell thickness is 5 mm.Then,a hollow-out casing structure is proposed,and with the“crab clamp”stiffener,the safety factor of the proposed structure is successfully improved from 5.5 to 10,and the weight of optimized casing is reduced by 51.92%.By comparing the structure of the“crab clamp”type with linear type stiffeners,the superiority of“crab clamp”type stiffener is verified.The optimized motor structure meets both lightweight design and reliable operation requirements.

关 键 词：表贴式永磁同步电机 全电飞机 轻量化 有限元 结构优化 

分 类 号：TM303[电气工程—电机]