volume | PIER Journals

Abstract

In this paper, a novel mechanical variable flux interior permanent magnet synchronous motor (MVF-IPMSM) is proposed. Based on the basic topology and operating principle of MVF-IPMSM, the effect of the special PMs structure in the new rotor topology on the air gap magnetic field and the design of the mechanical magnetic adjustment device of the proposed motor are analyzed, in which the finite element analysis (FEA) method is adopted. The electromagnetic characteristics of the MVF-IPMSM are analyzed including internal magnetic field distribution, air gap flux density, and torque characteristics. Furthermore, the ability of magnetic field regulation is also analyzed which can be reflected by the torque-speed and power-speed envelopes. Finally, a prototype is manufactured and tested. The measured results are compared with the FEA results, and the prototype experiments verify the effectiveness and feasibility of the design of the proposed MVF-IPMSM.

1. Pellegrino, G., A. Vacate, P. Guglielmo, and B. Boazzo, "Performance comparison between surface-mounted and interior PM motor drives for electric vehicle application," IEEE Transactions on Industrial Electronics, Vol. 59, No. 2, 803-811, Feb. 2012.
doi:10.1109/TIE.2011.2151825 Google Scholar

2. Cheng, M., P. Han, and W. Hua, "General airgap field modulation theory for electrical machines," IEEE Transactions on Industrial Electronics, Vol. 64, No. 8, 6063-6074, Aug. 2017.
doi:10.1109/TIE.2017.2682792 Google Scholar

3. Jahns, T. M., "Motion control with permanent-magnet AC machines," IEEE Trans. Industry Applications, Vol. 82, No. 8, 1241-1252, 1994. Google Scholar

4. Sneyers, B., D. W. Novotny, and T. A. Lipo, "Field weakening in buried permanent magnet AC motor drives," IEEE Transactions on Industry Applications, Vol. 21, No. 2, 398-407, 1985.
doi:10.1109/TIA.1985.349661 Google Scholar

5. Chen, J., J. Li, et al. "Analysis, modeling, and current trajectory control of magnetization state manipulation in variable-flux permanent magnet machines," IEEE Transactions on Industrial Electronics, Vol. 66, No. 7, 5133-5143, 2018.
doi:10.1109/TIE.2018.2868306 Google Scholar

6. Jayarajan, R., N. Fernando, and I. U. Nutkani, "A review on variable flux machine technology: Topologies, control strategies and magnetic materials," IEEE Access, Vol. 7, 70141-70156, 2019.
doi:10.1109/ACCESS.2019.2918953 Google Scholar

7. Takaaki, I., N. Tsuyoshi, O. Sohei, et al. "Manufacturing and control of a variable magnetic flux motor prototype with a mechanical adjustment method," Electrical Engineering in Japan, Vol. 199, No. 1, 57-66, 2017.
doi:10.1002/eej.22950 Google Scholar

8. Eiki, M., N. Noboru, and H. Katsuhiro, "Variable flux permanent magnet motor utilizing centrifugal force," International Journal of Applied Electromagnetics and Mechanics, Vol. 521, No. 2, 563-569, 2016. Google Scholar

9. Zhu, Z. Q., M. M. J. Al-Ani, X. Liu, et al. "A mechanical flux weakening method for switched flux permanent magnet machines," IEEE Transactions on Energy Conversion, Vol. 30, No. 2, 806-815, 2015.
doi:10.1109/TEC.2014.2380851 Google Scholar

10. Del Ferraro, L., F. Caricchi, et al. "Analysis and comparison of a speed-dependant and a torque-dependant mechanical device for wide constant power speed range in AFPM starter/alternators," IEEE Transactions on Power Electronics, Vol. 3, 720-729, 2006.
doi:10.1109/TPEL.2006.872377 Google Scholar

11. Liu, X., Y. Li, Z. Liu, et al. "Analysis and experimental investigation on flux-adjusting characteristic for a mechanical flux-adjusting axial PM synchronous machine," Transactions of China Electrotechnical Society, Vol. 33, No. 5, 9, 2018.
doi:10.1149/2.0801802jes Google Scholar

12. Liu, X., J. Xiao, H. Xu, et al. "Analysis of flux weakening performance of a novel variable flux permanent magnet synchronous machine with rotating magnetic pole," Transactions of China Electrotechnical Society, Vol. 35, No. 15, 9, 2020. Google Scholar

13. Liu, X., T. Sun, Y. Zou, et al. "Modelling and analysis of a novel mechanical-variable-flux IPM machine with rotatable magnetic poles," IET Electric Power Applications, Vol. 14, No. 4, 2020. Google Scholar

14. Cheng, S., C. Li, and B. Kou, "Research on the variable exciting function of a variable exciting magnetic reluctance PMSM," Proceedings of the CSEE, Vol. 27, No. 033, 17-21, 2007. Google Scholar

15. Chai, F. and Y. Bi, "Research review of flux-weakening methods of axial flux permanent magnet synchronous machine," Micromotors, Vol. 48, No. 02, 69-76, 2015. Google Scholar

16. Cao, Y., L. Feng, R. Mao, and K. Li, "Analysis of analytical magnetic field and flux regulation characteristics of axial-flux permanent magnet memory machine," IEEE Transactions on Magnetics, Early Access Article, 2022. Google Scholar

17. Ceylan, D., K. O. Boynov, and E. A. Lomonova, "Multi-objective optimization of a variable flux reluctance machine for high-torque operations," 2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG), 1-4, 2022. Google Scholar

18. Liu, W., H. Yang, H. Lin, F. Peng, S. Lyu, and X. Huang, "Thermal modeling and analysis of hybrid-magnetic-circuit variable flux memory machine," IEEE Transactions on Industry Applications, 2022. Google Scholar

Dr. Jianwei Liang

Dr. Dabin Liu

Dr. Yun Gao

Dr. Hongwei Yuan

Dr. Xiping Liu