摘要
针对温升等因素影响下碳纤维护套表贴式高速永磁电机的转子应力分析问题,将转子简化为永磁体和护套2个圆柱套筒结构。在此基础上,基于转子平面应力模型,采用弹性力学理论,推导了考虑过盈量、转速及温度影响的碳纤维护套永磁转子的应力解析解,并采用有限元法验证了解析模型的有效性。最终,通过转子应力解析解,研究了转子应力随过盈量、转速、温度及护套厚度等参数的变化规律。结果表明:解析法与有限元法的计算结果一致,通过该方法推导的解析解能够精确计算出永磁体和碳纤维护套的应力,对转子应力影响较大的因素分别为过盈量、转子转速以及温升,而护套的厚度对转子应力的影响较小。
Aiming at analyzing the rotor stress of surface-mounted high-speed permanent magnet motor with a carbon fiber sleeve under the influence of temperature rise and other factors,the rotor structure was simplified as the interference fit of two thick-walled cylindrical sleeves firstly.Then,the stress analytical solution of permanent magnet rotor retained by a carbon fiber sleeve was proposed based on the plane stress model of rotor and the elastic theory,considering the effects of interference,rotation speed and temperature.Subsequently,the analytical solution was verified by the finite element method.Finally,based on the proposed analytical solution,the influences of the parameters,such as the interference,rotation speed,temperature and sleeve thickness,etc.,on the rotor stress were further studied.The results show that the calculation results of the analytical method proposed are consistent with those of the finite element method,and the analytical solution can accurately calculate the rotor stress of the surface-mounted high-speed permanent magnet motor with a carbon fiber sleeve.The interference,rotation speed and temperature rise have a significant impact on the rotor stress,while the sleeve thickness have a relatively small impact.
作者
袁瑶
林其友
黄晟
舒晓欣
庞彦
涂之艺
陈亮亮
伍家驹
YUAN Yao;LIN Qi-you;HUANG Sheng;SHU Xiao-xin;PANG Yan;TU Zhi-yi;CHEN Liang-liang;WU Jia-ju(School of Information Engineering,Nanchang Hangkong University,Nanchang 330063,China;State Grid Wuhu Power Supply Company,Anhui Wuhu 241027,China)
出处
《南昌航空大学学报（自然科学版）》
CAS
2023年第2期27-34,共8页
Journal of Nanchang Hangkong University(Natural Sciences)
基金
国家自然科学基金(12062014,51967015)
江西省自然科学基金(20202BABL204048)。
关键词
高速永磁电机
应力分析
碳纤维护套
有限元
high-speed permanent magnet motor
stress analysis
carbon fiber sleeve
finite element method
