扁平大功率高速永磁同步电机的护套设计及其强度优化
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摘要
针对扁平结构、分块式永磁体的高速永磁同步电机的碳纤维护套设计问题,给出了通用的护套参数化设计模型,能够实现护套的快速设计,并分析了护套与永磁体间的过盈量、永磁体的径向压应力、转子外径对护套设计的影响。采用三维有限元方法对转子强度的解析模型进行了验证,并结合转子温度场分析结果,针对不同温度条件下,磁极间隔导致护套弯曲应力的产生,从而威胁护套安全的问题进行了研究。对比研究了不同磁极间隔材料对护套强度的影响,得到钛合金做磁极间隔时能够有效降低护套的弯曲应力,提高护套强度。最后制作了样机,并进行了实验。
For the design of carbon fiber sleeve of the high-speed permanent magnet synchronous motor with segmented permanent magnets and flat structure, parametric model was proposed to achieve the rapid design of the sleeve. Influences of interference value between sleeve and magnets, radial compressive stress of magnets, and diameter of rotor on the design of sleeve were analyzed. A 3-D finite element model was built to verify the analytical results. In addition, with the temperature rise results of the rotor, it was used to investigate the problem of bending stress of the sleeve caused by pole spacers under different temperature which may result in destruction of the sleeve. The influences of different pole spacer materials on the bending stress of the sleeve were compared. As a result, the bending stress of the sleeve could be greatly decreased by titanium alloy pole spacers and the strength was optimized. A prototype was manufactured and the test was provided.
For the design of carbon fiber sleeve of the high-speed permanent magnet synchronous motor with segmented permanent magnets and flat structure, parametric model was proposed to achieve the rapid design of the sleeve. Influences of interference value between sleeve and magnets, radial compressive stress of magnets, and diameter of rotor on the design of sleeve were analyzed. A 3-D finite element model was built to verify the analytical results. In addition, with the temperature rise results of the rotor, it was used to investigate the problem of bending stress of the sleeve caused by pole spacers under different temperature which may result in destruction of the sleeve. The influences of different pole spacer materials on the bending stress of the sleeve were compared. As a result, the bending stress of the sleeve could be greatly decreased by titanium alloy pole spacers and the strength was optimized. A prototype was manufactured and the test was provided.
引文
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[14]Binder A,Schneider T.High-speed inverter-fed AC drives[C]//International Aegean Conference on Electrical Machines and Power Electronics,Bodrum,2007:9-16.
[15]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):195-202.Zhang Fengge,Du Guanghui,Wang Tianyu,et al.Rotor strength analysis of high-speed permanent magnet under different protection measures[J].Proceedings of the CSEE,2013,33(S):195-202.
[16]张涛,朱熀秋,孙晓东,等.基于有限元法的高速永磁转子强度分析[J].电机与控制学报,2012,16(6):63-68.Zhang Tao,Zhu Huangqiu,Sun Xiaodong,et al.Strength analysis on high-speed permanent magnet rotor using finite element method[J].Electric Machines and Control,2012,16(6):63-68.
[17]Borisavljevic A,Polinder H,Ferreira J A.Enclosure design for a high-speed permanent magnet rotor[C]//5th IET International Conference on Power Electronics,Brighton,2010:1-6.
[18]徐秉业,刘信生.应用弹性力学[M].北京:清华大学出版社,1995.
[19]Wan Yuan,Wu Shaopeng,Cui shumei.Choice of pole spacer materials for a high-speed PMSM based on the temperature rise and thermal stress[J].IEEE Transactions on Applied Superconductivity,2016,26(7):1-5.
[2]Mc Nab I R.Large-scale pulsed power opportunities and challenges[J].IEEE Transactions on Plasma Science,2014,42(5):1118-1127.
[3]Mc Nab I R,Heyne C J,Cilli M V.Megampere pulsed alternators for large EM launchers[C]//IEEE International Conference on Megagauss Magnetic Field Generation and Related Topics,Herlany,Slovakia,2006:391-397.
[4]Gerada D,Mebarki A,Brown N L,et al.High-speed electrical machines:technologies,trends,and developments[J].IEEE Transactions on Industrial Electronics,2014,61(6):2946-2959.
[5]张凤阁,杜光辉,王天煜.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.Review on development and design of high speed machines[J].Transactions of China Electrotechnical Society,2016,31(7):1-18.
[6]陈萍,唐任远,佟文明,等.高功率密度永磁同步电机永磁体涡流损耗分布规律及其影响[J].电工技术学报,2016,31(7):1-9.Chen Ping,Tang Renyuan,Tong Wenming,et al.Permanent magnet eddy current loss and its influence of high power density permanent magnet synchronous motor[J].Transactions of China Electrotechnical Society,2016,31(7):1-9.
[7]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.
[8]Borisavljevic A,Polinder H,Ferreira J A.On the speed limits of permanent-magnet machines[J].IEEE Transactions on Industrial Electronics,2010,57(1):220-227.
[9]王继强,王凤翔,鲍文博,等.高速永磁电机转子设计与强度分析[J].中国电机工程学报,2005,25(15):140-145.Wang Jiqiang,Wang Fengxiang,Bao Wenbo,et al.Rotor design and strength analysis of high speed permanent magnet machine[J].Proceedings of the CSEE,2005,25(15):140-145.
[10]程文杰,耿海鹏,冯圣,等.高速永磁同步电机转子强度分析[J].中国电机工程学报,2012,32(27):87-94.Cheng Wenjie,Geng Haipeng,Feng Sheng,et al.Rotor strength analysis of high-speed permanent magnet synchronous motors[J].Proceedings of the CSEE,2012,32(27):87-94.
[11]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),2013,47(12):2101-2110.Wang Baojun,Bi Liuxin,Chen 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),2013,47(12):2101-2110.
[12]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 the thermal carbon-fiber retaining rotor in high-speed permanent magnet machine[J].Journal of Zhejiang University(Engineering Science),2015,49(1):162-172.
[13]Binder A,Schneider T,Klohr M.Fixation of buried and surface-mounted magnets in high-speed permanent-magnet synchronous machines[J].IEEE Transactions on Industry Applications,2006,42(4):1031-1037.
[14]Binder A,Schneider T.High-speed inverter-fed AC drives[C]//International Aegean Conference on Electrical Machines and Power Electronics,Bodrum,2007:9-16.
[15]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):195-202.Zhang Fengge,Du Guanghui,Wang Tianyu,et al.Rotor strength analysis of high-speed permanent magnet under different protection measures[J].Proceedings of the CSEE,2013,33(S):195-202.
[16]张涛,朱熀秋,孙晓东,等.基于有限元法的高速永磁转子强度分析[J].电机与控制学报,2012,16(6):63-68.Zhang Tao,Zhu Huangqiu,Sun Xiaodong,et al.Strength analysis on high-speed permanent magnet rotor using finite element method[J].Electric Machines and Control,2012,16(6):63-68.
[17]Borisavljevic A,Polinder H,Ferreira J A.Enclosure design for a high-speed permanent magnet rotor[C]//5th IET International Conference on Power Electronics,Brighton,2010:1-6.
[18]徐秉业,刘信生.应用弹性力学[M].北京:清华大学出版社,1995.
[19]Wan Yuan,Wu Shaopeng,Cui shumei.Choice of pole spacer materials for a high-speed PMSM based on the temperature rise and thermal stress[J].IEEE Transactions on Applied Superconductivity,2016,26(7):1-5.