Strength Analysis of High Speed Permanent Magnet Machine Rotor with Inter-Shaft Filling
Liu Wei1,2, Chen Jinhua1, Zhang Chi, Zhiqin2
1.Laboratory of Robotics and Intelligent Manufacturing Equipment Technology of Zhejiang Province Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China; 2. School of Mechanical and Electrical Engineering North University of China Taiyuan 030051 China
Abstract：Considering the analysis of rotor strength of high speed permanent magnet (PM) machine in high speed and temperature condition, this paper proposes a novel rotor model with filler between the permanent magnets and the shaft. Based on the classical theory of thick-walled cylinder, the analytical expressions of the rotor strength are deduced, and the tangential and radial stresses of each part are also deduced. Compared with the finite element stress analysis, the results are similar with it and the correctness of the analytical method is verified. The tangential stress of the permanent magnet has been one of the key factors in the damage of the high-speed permanent magnet machine. Considering the inter-shaft filling, the tangential stress of the permanent magnet of the machine rotor model is 6.1% less than the stress that does not take into account the inter-shaft filling model, while the stress difference in other regions is small. The rotor structure model based on the inter-shaft filling provides a new idea for analyzing the thermal strength of the rotor of the surface mounted high speed permanent magnet machine.
[1] 张凤阁, 杜光辉, 王天煜, 等. 高速电机发展与设计综述[J]. 电工技术学报, 2016, 31(7): 1-18. Zhang Fengge, Du Guanghui, Wang Tianyu, et al.Review on development and design of high speed machines[J]. Transactions of China Electrotechnical Society, 2016, 31(7): 1-18. [2] 刘婷婷, 谭彧, 吴刚, 等. 基于SVPWM的高转速永磁同步电机控制系统的研究[J]. 电力系统保护与控制,2009,37(12):11-14. Liu Tingting, Tan Yu, Wu Gang, et al.Simulating of high speed PMSM control system based on SVPWM[J]. Power System Protection and Control, 2009, 37(12):11-14. [3] 陈益广, 郑军, 魏娟, 等. 舵机用永磁同步电机的设计与温度场分析[J].电工技术学报, 2015, 30(14): 94-99. Chen Yiguang, Zheng Jun, Wei Juan, et al.Design of PMSM for actuator and its temperature field analysis[J]. Transactions of China Electrotechnical Society, 2015, 30(14): 94-99. [4] 刘光伟, 滕伟彪, 李庚午, 等. 高速爪极电机外永磁转子设计[J]. 电工技术学报,2015, 30(14):561-567. Liu Guangwei, TengWeibiao, Li Gengwu, et al. Permanent magnet outer rotor design of high speed claw pole machine[J].Transactions of China Electrotechnical Society, 2015, 30(14):561-567. [5] Zhang Fengge, Du Guanghui, Wang Tianyu, et al.Rotor retaining sleeve design of a 1.12MW high-speed PM machine[J].IEEE Transactions on Industry Applications, 2015, 51(5): 3675-3685. [6] Zhang Fengge, Du Guanghui, Wang Tianyu,et al.Electromagnetic design and loss calculations of a 1.12-MW high-speed permanent-magnet motor for compressor applications[J].IEEE Transactions on Energy Conversion, 2016, 31(1): 132-140. [7] 张清枝, 牛联波, 艾永乐. 永磁辅助磁阻同步电机性能分析[J]. 电力系统保护与控制,2011, 39(22): 129-132. Zhang Qingzhi, NiuLianbo, Ai Yongle. Performance analysis of permanent assisted reluctance synchronous machine[J]. Power System Protection and Control, 2011, 39(22): 129-132. [8] Krack M, Secanell M, Mertiny P.Cost optimization of hybrid composite flywheel rotors for energy storage[J]. Struct Multidisc Optim, 2010, 41(5): 779-795. [9] 谈震, 李永丽. 基于双DSP 的飞轮储能系统控制平台的研制[J]. 电力系统保护与控制, 2012, 40(11):127-139. Tan Zhen, Li Yongli.Development of flywheel energy storage system control platform based on dual-DSP[J]. Power System Protection and Control, 2012, 40(11): 127-139. [10] Xiao J C, Xiao S H, Wu H.Design and strength analysis of ultra-high speed permanent magnet DC rotor[J]. Advanced Materials Research, 2011, 188: 481-486. [11] 王晓远, 高鹏, 赵玉双. 电动汽车用高功率密度电机关键技术[J].电工技术学报, 2015, 30(6):53-59. Wang Xiaoyuan, Gao Peng, Zhao Yushuang.Key technology of high power density motors in electric vehicles[J].Transactions of China Electrotechnical Society, 2015, 30(6): 53-59. [12] 李松松. 碳纤维复合材料高速转子的力学特性研究及其储能密度优化[D].长春:中国科学院研究生院(长春光学精密机械与物理研究所),2003. [13] 张凤阁, 杜光辉, 王天煜, 等. 基于多物理场的高速永磁电机转子护套研究[J]. 电机与控制学报, 2014, 18(6):15-21. Zhang Fengge, Du Guanghui, Wang Tianyu, et al.Rotor containment sleeve study of high-speed PM machine based on multi-physics fields[J].Electric Machines and Control, 2014, 18(6): 15-21. [14] 张凤阁, 杜光辉, 王天煜, 等. 高速永磁电机转子不同保护措施的强度分析[J].中国电机工程学报, 2013, 33(增刊1): 195-202. ZhangFengge, DuGuanghui, WangTianyu, et al. Rotor strength analysis of high-speed permanent magnet under different protection measures[J].Proceedings of the CSEE, 2013, 33(S1): 195-202. [15] 张凤阁, 杜光辉, 王天煜, 等. 1.12 MW 高速永磁电机多物理场综合设计[J].电工技术学报, 2015, 30(12): 171-180. Zhang Fengge, Du Guanghui, Wang Tianyu, et al.Integrated design of 1.12 MW high speed PM machine based on multi-physics fields[J].Transactions of China Electrotechnical Society, 2015, 30(12): 171-180. [16] 王保俊, 毕刘新, 陈亮亮, 等. 碳纤维绑扎表贴式高速永磁电机转子强度分析[J]. 浙江大学学报 (工学版), 2014, 47(12): 2101-2110. Wang Baojun, Bi Liuxin, Cheng Liangliang, et al.Strength analysis of a surface mounted high speed permanent magnetic machine rotor with carbon fiber bandage[J]. Journal of Zhejiang University(Engineering Science), 2014, 47(12): 2101-2110. [17] 陈亮亮, 祝长生, 王萌. 碳纤维护套高速永磁电机热态转子强度[J]. 浙江大学学报(工学版), 2015, 49(1): 162-172. Chen Liangliang, Zhu Changsheng, Wang Meng.Strength analysis for thermal carbon-fiber retaining rotorin high-speed permanent magnet machine[J].Journal of Zhejiang University (Engineering Science),2015, 49(1): 162-172. [18] 张超, 朱建国, 韩雪岩. 高速表贴式永磁电机转子强度分析[J]. 中国电机工程学报, 2016, 36(17): 4719-4727. Zhang Chao, Zhu Jianguo, Han Xueyan.Rotor strength analysis of high-speed surface mounted permanent magnet rotors[J]. Proceedings of the CSEE, 2016, 36(17): 4719-4727.
2018, Vol. 33 
