高速永磁电机复合转子多尺度强度数值分析  

Numerical Analysis of Multi-scale Strength of Composite Rotor for High-speed Permanent Magnet Motor

作　　者：杨璐铭 王天煜 汪泽润 白斌 宇秋红 YANG Luming;WANG Tianyu;WANG Zerun;BAI Bin;YU Qiuhong(School of Energy and Power,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province;College of Machinery,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province;School of Mechanical and Energy Engineering,Shanghai Electronic Information Vocational and Technical University,Shanghai 201411;School of Electrical Engineering,Shenyang University of Technology,Shenyang 110136,Liaoning Province;Shenyang Yuheng Technology Co.,Shenyang 110000,Liaoning Province)

机构地区：[1]沈阳工程学院能源动力学院,辽宁沈阳110136 [2]沈阳工程学院机械学院,辽宁沈阳110136 [3]上海电子信息职业技术学院机械与能源工程学院,上海201411 [4]沈阳工业大学电气工程学院,辽宁沈阳110870 [5]沈阳玉衡科技有限公司,辽宁沈阳110000

出　　处：《沈阳工程学院学报（自然科学版）》2024年第3期84-90,共7页Journal of Shenyang Institute of Engineering:Natural Science

基　　金：国家自然科学基金(52077121);辽宁省国家重点实验室联合开放基金(2021-KF24-02)。

摘　　要：传统高速永磁电机多采用块状永磁体结构,在高速旋转下极易导致烧结永磁体的破坏。为提高转子机械强度,提出一种新型复合转子结构,该结构使用磁粉胶膜/碳纤维复合磁性材料代替烧结永磁体,采用多尺度分析方法,对其性能进行研究。在细观尺度上,利用均匀化理论分析碳纤维单元的力学性能,再根据单胞结构理论分析磁粉胶膜单元的力学性能;在宏观尺度上,将各单元的性能作为多层复合磁性材料中各单层的有效性能,采用经典层合板理论计算复合磁性材料整体力学性能,并与拉伸试验对比,验证多尺度分析方法的正确性。最后,利用有限元软件对不同尺度转子模型进行强度数值模拟,研究不同尺度下模型的应力分布情况,研究结果证明了在细观尺度下的转子应力分析更加精确。Conventional high-speed permanent magnet motors mostly use block permanent magnet structure,which is very easy to lead to the destruction of sintered permanent magnets under high-speed rotation.In order to improve the mechanical strength of the rotor,a new composite rotor structure is proposed in the paper,which uses magnetic powder film/carbon fiber composite magnetic material instead of a sintered permanent magnet and adopts a multi-scale analysis method to study its performance.At the fine scale,the mechanical properties of the carbon fiber unit are analyzed using the homogenization theory,and then the mechanical properties of the magnetic powder film unit are analyzed according to the single-cell structure theory.On the macroscopic scale,the performance of each unit is taken as the effective performance of each monolayer in the multilayer composite magnetic material,and the classical plywood theory is used to calculate the overall mechanical properties of the composite magnetic material and to verify the correctness of the multiscale analysis method by comparing it with the tensile test.Finally,the strength numerical simulation of the rotor model at different scales is carried out by using finite element software,and the stress distribution of the model at different scales is studied.The results show that the rotor stress analysis at the fine scale is more accurate.

关 键 词：高速电机 飞轮储能 多尺度 转子强度 数值分析 

分 类 号：TM351[电气工程—电机]