Computing and Library Services - delivering an inspiring information environment

Mechanical design of rotors for permanent magnet high speed electric motors for turbocharger applications

Barrans, Simon, Alani, Mahir and Carter, Jeff (2017) Mechanical design of rotors for permanent magnet high speed electric motors for turbocharger applications. IET Electrical Systems in Transportation. ISSN 2042-9738

PDF - Accepted Version
Download (1MB) | Preview


Realization of electrically boosted turbochargers requires electric motors capable of operating at very high speeds. These motors often use a permanent magnet rotor with the magnets retained within an interference fit external sleeve. Whilst it is possible to model such systems numerically, these models are an inefficient tool for design optimization. Current analytical models of rotors typically consider the stresses induced by the shrink fit of the sleeve separately from the stresses generated by centripetal forces due to rotation. However, such an approach ignores the frictional interaction between the components in the axial direction. This paper presents an analytical model that simultaneously accounts for interaction between the magnet and outer sleeve in both the radial and axial directions at designed interference and with the assembly subjected to centripetal and thermal loads. Numerical models presented show that with only moderate coefficients of friction and rotor lengths; axial load transfer between magnet and sleeve takes place over a short distance at the ends of the assembly. The paper then demonstrates how the analytical model aids definition of a feasible set of rotor designs and selection of an optimum design.

▼ Jump to Download Statistics
Item Type: Article
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Schools: School of Computing and Engineering > Turbocharger Research Institute
School of Computing and Engineering
Related URLs:
References: 1] Arsie, I., Cricchio, A,. Pianese, C., et al., A comprehensive powertrain model to evaluate the benefits of electric turbo compound (ETC) in reducing CO2 emissions from small Diesel passenger cars. 2014, SAE Technical Paper. [2] Keller, R., E. Mese, and J. Maguire. Integrated system for electrical generation and boosting (iSGB). in Electrical Machines and Systems (ICEMS), 2014 17th International Conference on. 2014. IEEE. [3] Gerada, D., High-Speed Electrical Machines: Technologies, Trends, and Developments. IEEE Transactions on Industrial Electronics, 2014. 61(6): p. 2946-2959. [4] Binder, A., T. Schneider, and M. Klohr, Fixation of buried and surface-mounted magnets in high-speed permanent-magnet synchronous machines. Industry Applications, IEEE Transactions on, 2006. 42(4): p. 1031-1037. [5] Kim, C.-K. and T.-H. Kim, Finite Element Analysis on the Strength Safety of a Hybrid Alarm Valve. Journal of manufacturing engineering & technology, 2012. 21(2): p. 221-224. [6] Smith, D.J.B., Mecrow, B.C., Atkinson, G.J., et al., Shear stress concentrations in permanent magnet rotor sleeves. in Electrical Machines (ICEM), 2010 XIX International Conference on. 2010. IEEE. [7] Gieras, J.F. Design of permanent magnet brushless motors for high speed applications. in Electrical Machines and Systems (ICEMS), 2014 17th International Conference on. 2014. IEEE. [8] Zhang, J., Chen, W., Huang, X., et al., Evaluation of Applying Retaining Shield Rotor for High-Speed Interior Permanent Magnet Motors. IEEE TRANSACTIONS ON MAGNETICS, 2015. 51(3): p. 8100404. [9] Varaticeanu, B.D., P. Minciunescu, and D. Fodorean, Mechanical Design and Analysis of a Permanent Magnet Rotors used in High-Speed Synchronous Motor. Electrotehnica, Electronica, Automatica, 2014. 62(1): p. 9. [10] Tenconi, A., S. Vaschetto, and A. Vigliani, Electrical Machines for High-Speed Applications: Design Considerations and Tradeoffs. IEEE Transactions on Industrial Electronics, 2014. 61(6): p. 3022-3029. [11] Abdollahi, S., M. Mirzaei, and H. Lesani. Rotor optimization of a segmented reluctance synchronous motor utilizing genetic algorithm. in Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on. 2009. IEEE. [12] Danilevich, J.B., Kruchinina, I.Y., Antipov, V.N., et al., Some problems of the high-speed permanent magnet miniturbogenerators development. in ICEM 2008. 18th International Conference on Electrical Machines. 2008. IEEE. [13] Kim, S.-I., Kim, Y-K., Lee, G-H., et al., A novel rotor configuration and experimental verification of interior PM synchronous motor for high-speed applications. Magnetics, IEEE Transactions on, 2012. 48(2): p. 843-846. [14] Smith, J.S. and A.P. Watson. Design, manufacture, and testing of a high speed 10 MW permanent magnet motor and discussion of potential applications. in Proceedings of the Thirty-Fifth Turbomachinery Symposium. 2006. [15] Wang, T., Wang, F., Bai, H., et al., Optimization design of rotor structure for high speed permanent magnet machines. in Electrical Machines and Systems, 2007. ICEMS. International Conference on. 2007. IEEE. [16] Solecki, R., and Conant, R.J., Advanced mechanics of materials. 2003, New York: Oxford University Press. [17] Zhang, F., Du, G., Wang, T., et al., Rotor Retaining Sleeve Design for a 1.12-MW High-Speed PM Machine. IEEE Transactions on Industry Applications, 2015. 51(5): p. 3675-3685. [18] Borisavljevic, A., H. Polinder, and B. Ferreira. Overcoming limits of high-speed PM machines. in 2008 18th International Conference on Electrical Machines. 2008. [19] Yon, J.M., Mellor, P.H., Wrobel, R., et al., Analysis of semipermeable containment sleeve technology for high-speed permanent magnet machines. Energy Conversion, IEEE Transactions on, 2012. 27(3): p. 646-653. [20] Li, W., Qiu, H., Zhang, X., et al., Analyses on Electromagnetic and Temperature Fields of Superhigh-Speed Permanent-Magnet Generator With Different Sleeve Materials. IEEE Transactions on Industrial Electronics, 2014. 61(6): p. 3056-3063.
Depositing User: Simon Barrans
Date Deposited: 08 Jun 2017 08:42
Last Modified: 28 Aug 2021 15:56


Downloads per month over past year

Repository Staff Only: item control page

View Item View Item

University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©