基于多维可视化的高速永磁电机转子强度优化设计  

Optimal strength design of a high-speed permanent magnet motor rotor based on multi-dimensional visualization

作　　者：涂之艺 陈亮亮 伍家驹[1] 马航 熊茹 吴剑[1] 李志农[3] TU Zhiyi;CHEN Liangliang;WU Jiaju;MA Hang;XIONG Ru;WU Jian;LI Zhinong(School of Information Engineering,Nanchang Hangkong University,Nanchang 330063,China;Power Supply Service Management Center of Jiangxi Electric Power Co.,Ltd.,Nanchang 330077,China;Key Laboratory of Nondestructive Testing Technology,Ministry of Education,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学信息工程学院,南昌330063 [2]国网江西省电力有限公司供电服务管理中心,南昌330077 [3]南昌航空大学无损检测技术教育部重点实验室,南昌330063

出　　处：《振动与冲击》2022年第18期236-243,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金(12062014,51967015);江西省自然科学基金(20202BABL204048);南昌航空大学研究生创新专项基金(YC2021-033)。

摘　　要：在高速永磁电机中,永磁体机械强度不足以承受高速旋转产生的离心力,需要用高强度非导磁金属护套来保护永磁材料。针对高速永磁电机中实心圆柱永磁转子结构,将转子的应力条件简化为平面应力问题,采用极坐标下的位移法,推导了非导磁金属护套保护的圆柱永磁转子强度解析公式。在此基础上,运用多维可视化算法研究了护套厚度、过盈量以及转速对转子强度的影响,对各多维可视化图形进行交集运算,得到了静态和高速运行状态下均满足强度要求的护套厚度及过盈量的可行域,在可行域中选择设计参数的最优值,最后,借助有限元法验证了设计方案的有效性。结果表明,提出的基于多维可视化的优化设计方法能够得到护套厚度及过盈量的集状解,便于实现鲁棒优化,具有直观、方便的特点。In a high-speed permanent magnet motor,the permanent magnet is usually not strong enough to bear the centrifugal force caused by high-speed rotation,so,a high strength and non-conductive metal sheath is needed to protect the permanent magnet material.For the structure of a solid cylinder permanent magnet rotor in the high speed permanent magnet motor,the stress condition of the rotor could be simplified as a plane stress state,and the analytical formula for the strength calculation of the cylindrical permanent magnet rotor with a non-magnetic metal sheath was derived by the displacement method in polar coordinate.On this basis,a multi-dimensional visualization algorithm was used to study the influences of sheath thickness,interference fit and rotation speed on rotor strength,and the feasible regions of sheath thickness and interference fit,under both static and high-speed running conditions,were obtained through intersection operation among the multi-dimensional visualization maps,subsequently,the optimal values of design parameters were selected in the feasible region.Finally,the validity of the design scheme was verified by the finite element method.The results show that the lumped solutions of the sheath thickness and interference fit can be obtained by the proposed optimal design method based on multi-dimensional visualization,and it is beneficial to achieve the robust optimization with the advantages of direct viewing and operation convenience.

关 键 词：高速永磁电机 强度计算 有限元 可视化算法 

分 类 号：TM122[电气工程—电工理论与新技术] TM313