volume | PIER Journals

Abstract

By combining the theory of mechanical flux-adjusting with the advantages of an interior permanent magnet synchronous machine (PMSM), a new type of auto-rotary PMs mechanical flux-varying PM machine (ARPMMFVPMM) is creatively proposed in this paper. The operation principle and mechanical flux-adjusting mechanism were deeply investigated. The relationship between deformation of spring and auto-rotary angle of gear against speed was obtained by Automatic Dynamic Analysis of Mechanical System (ADAMS). Meanwhile, the electromagnetic characteristics of the machine were numerically analyzed by Finite Element Analysis (FEA). The simulation results show that the auto-rotary of cylindrical PMs is realized by the centrifugal force of mechanical device, and the range of speed regulation is expanded by adjusting the magnetic field distribution.

1. Cheng, H., X. D. Liu, and J. Zhao, "Design and optimization of a high-band width low-speed high-torque permanent magnetic synchronous motor," Transactions of China Electrotechnical Society, Vol. 29, No. S1, 108-114, 2014.

2. Massimo, B., M. Giovanni, and B. Nicola, "Structural analysis of the interior PM rotor considering both static and fatigue loading," IEEE Transactions on Industry Applications, Vol. 50, No. 1, 253-260, 2014.
doi:10.1109/TIA.2013.2268048

3. Liu, X. P., Y. Li, Z. Q. Liu, et al. "Optimized design of a high power density permanent magnet-assisted synchronous reluctance machine with low-cost ferrite magnets for EVs/HEVs," COMPEL --- The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Vol. 35, No. 6, 1949-1964, 2016.
doi:10.1108/COMPEL-05-2016-0233

4. Wang, J., K. Zhao, and F. Chai, "Research review of flux-weakening of permanent magnet synchronous motor," Micromotor, Vol. 47, No. 01, 1–6+21, 2014.

5. Zhao, J. L., M. Y. Lin, X. H. Fu, et al. "Review and new progress of hybrid excitation synchronous motor and its control technology," Transactions of China Electrotechnical Society, Vol. 34, No. 33, 5876-5887, 2014.

6. Liu, X. P., A. H. Zheng, and C. Wang, "Design of a stator-separated axial flux-switching hybrid excitation synchronous machine," International Conference on Electrical Machines and Systems (ICEMS), Vol. 1, No. 4, 1-4, 2011.

7. Liu, X. P., D. Cheng, M. Wang, et al. "Mechanical dynamic analysis and field-weakening capacity study of a variable magnetic flux axial magnetic permanent magnet motor," Transactions of China Electrotechnical Society, Vol. 23, 54-62, 2016.

8. Zhao, J., B. Li, and Z. X. Gu, "Research on an axial flux PMSM with radially sliding permanent magnets," Energies, Vol. 8, No. 3, 1663-1684, 2015.
doi:10.3390/en8031663

9. Zhao, J., Y. S. Yan, Z. X. Gu, Z. Chen, and P. Zheng, "Research on an axial-axial flux compound-structure PMSM with varying air gap to fulfill field-weakening control," Proceedings of the Electrical Machines and Systems, Vol. 22-25, 3345-3349, 2014.

10. Tessarolo, A., M. Mezzarobba, and R. Menis, "A new rotor design for flux weakening capability improvement in spoke-type interior permanent magnet synchronous machines," Proc. 9th Int. Conf. Ecol. Veh. Renew. Energies (EVER), 1-9, 2014.

11. Zhu, Z. Q., M. M. J. Al-Ani, X. Liu, M. Hasegawa, A. Pride, and R. Deodhar, "Comparison of flux weakening capability in alternative switched flux permanent magnet machines by mechanical adjusters," Proc. 20th Int. Conf. Elect. Mach. (ICEM), 2889-2895, 2012.

12. Kim, K.-C., "A novel magnetic flux weakening method of permanent magnet synchronous motor for electric vehicles," IEEE Trans. Magn., Vol. 48, No. 11, 4042-4045, 2012.
doi:10.1109/TMAG.2012.2198444

13. David, G. D., M. K. Andrew, E. Lyndon, and P. Mircea, "Analysis and design techniques applied to hybrid vehicle drive machines-assessment of alternative IPM and induction motor topologies," IEEE Transactions on Industrial Electronics, Vol. 59, No. 10, 3690-3699, 2012.
doi:10.1109/TIE.2011.2165460

14. Cheng, L. X., Z. Y. Zhang, and R. Y. Tang, "A new structure for improving the field-weakening of the permanent magnet traction motor," Transactions of China Electrotechnical Society, Vol. 27, No. 03, 100-104, 2012.

15. Ling, H. Y., H. Yang, Y. K. Huang, and S. H. Fang, "Research review and new progress of memory motor," Transactions of China Electrotechnical Society, Vol. 33, No. 33, 57-67, 2013.

16. Liu, X. P., A. H. Zheng, and C.Wang, "Three dimensional finite element analysis and experimental study of a stator segmented axial flux switching hybrid excitation synchronous motor," Transactions of China Electrotechnical Society, Vol. 27, No. 10, 106-113, 2012.

17. Zhao, C. H., S. L. Ji, and X. W. Wang, "No-load characteristics of a rotor magnetic shunt radial structure hybrid excitation synchronous generator," Transactions of China Electrotechnical Society, Vol. 27, No. 09, 198-203, 2012.

18. Tessarolo, A., M. Mezzarobba, and R. Menis, "A novel interior permanent magnet motor design with a self-activated flux-weakening device for automotive applications," International Conference on Electrical Machines(ICEM), 2603-2609, 2012.

19. Owen, R., Z. Q. Zhu, J. B. Wang, et al. "Mechanically adjusted variable-flux concept for switched-flux permanent-magnet machines," 2011 International Electrical Machines and Systems (ICEMS), 1-6, 2011.

20. Zhu, Z. Q., M. Al-Ani, X. Liu, et al. "Comparison of flux weakening capability in alternative switched flux permanent magnet machines by mechanical adjusters," 2012 XXth International Electrical Machines (ICEM), 2889-2895, 2012.
doi:10.1109/ICElMach.2012.6350297

21. Tessarolo, A., M. Mezzarobba, and R. Menis, "A novel interior permanent magnet motor design with a self-activated flux-weakening device for automotive applications," 2012 XXth International Electrical Machines(ICEM), 2603-2609, 2012.
doi:10.1109/ICElMach.2012.6350252

22. Chai, F., J. Ou, and Y. L. Pei, "Field-weakening research of double stator conical permanent magnet synchronous motor," Transactions of China Electrotechnical Society, Vol. 28, No. 7, 12-18, 2013.

Dr. Xiping Liu

Dr. Zhixuan Zhang

Dr. Yufeng Liu

Dr. Shaowen Cai