Electromagnetic Optimization of a High-Speed Interior Permanent Magnet Motor Considering Rotor Stress
Source abstract
Abstract
High-speed interior permanent magnet (IPM) motors require highly reliable rotors. Some measures must be adopted to improve rotor safety, but its electromagnetic performance is seriously affected. It is a challenge to achieve excellent electromagnetic characteristics while satisfying mechanical strength. This paper presents an electromagnetic optimization design of high-speed IPM motors considering rotor stress. Firstly, the permanent magnet (PM) is segmented by adding stiffeners to improve stress distribution. The effects of the bridge and stiffener thickness on the rotor stress and electromagnetic performance are analyzed. Secondly, an electromagnetic optimization model is built based on a three-segment PM rotor structure, aiming for maximum efficiency and minimum rotor core losses. Then, the initial design and optimized scheme are compared, the results show that the efficiency, safety and temperature performance of the motor are improved. Finally, a 140 kW, 18,000 rpm prototype is manufactured and tested. The above analysis provides a valuable reference for the design and widespread application of high-speed IPM motors.
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Research context
OpenAlex topics: Electric Motor Design and Analysis · Induction Heating and Inverter Technology · Magnetic Bearings and Levitation Dynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Electrical and Control Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
School of Automation, Northwestern Polytechnical University, Xi’an 710072, China
Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China
Funding
National Natural Science Foundation of Shaanxi Province · China Postdoctoral Science Foundation · Key Research and Development Program of Shaanxi
References (28)
Show source-provided references
1. Analysis and research on no-load air gap magnetic field and system multiobjective optimization of interior PM motor10.1109/TIE.2021.3118413 ↗
2. Electromagnetic-Thermal-Stress Efforts of Stator-Casing Grease Buffers for Permanent Magnet Driving Motors10.1109/TIA.2023.3291680 ↗
3. Parameter design for a high-speed permanent magnet machine under multiphysics constraints10.1109/TEC.2020.3000054 ↗
4. Investigation of bessel functions in analytical modeling of rotor eddy current losses in PM machine rotor with copper shield10.1109/TMAG.2023.3239898 ↗
5. Du, G.H., Li, N.M., Zhou, Q.X., Gao, W.T., Wang, L., and Pu, T. (2022). Multi-physics comparison of surface-mounted and interior permanent magnet synchronous motor for high-speed applications. Machines, 10.10.3390/machines10080700 ↗
6. A new flux-concentrating rotor of permanent magnet motor for electric vehicle application10.1109/TIE.2021.3116558 ↗
7. A new segmented rotor to mitigate torque ripple and electromagnetic vibration of interior permanent magnet machine10.1109/TIE.2021.3063869 ↗
8. Design and comparison of interior permanent magnet motor topologies for traction applications10.1109/TTE.2016.2614972 ↗
9. Abdelrahman, A., Sahu, A., Emery, N., Al-Ani, D., and Bilgin, B. (2022, January 15–17). Multi-physics design platform for a high power density multi-phase IPM traction motor: Analysis and simulation. Proceedings of the 2022 IEEE Transportation Electrification Conference & Expo (ITEC), Anaheim, CA, USA.10.1109/ITEC53557.2022.9814055 ↗
10. Research on interior permanent magnet synchronous motor based on performance matching of electric bus10.1109/TASC.2021.3091062 ↗
11. Calculation of the maximum mechanical stress on the rotor of interior permanent-magnet synchronous motors10.1109/TIE.2016.2524410 ↗
12. Li, Y., Pei, Y.L., Liang, P.X., and Chai, F. (September, January 31). Analysis of the rotor mechanical strength of interior permanent magnet synchronous in-wheel motor with high speed and large torque. Proceedings of the 2014 IEEE Conference and Expo Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), Beijing, China.10.1109/ITEC-AP.2014.6941181 ↗
13. Mechanical stress reduction of rotor core of interior permanent magnet synchronous motor10.1109/TMAG.2011.2172582 ↗
14. Rao, J., Qu, R.H., Ma, J., and Xu, W. (2014, January 22–25). Investigate the influence of magnetic bridge design on mechanical strength and electromagnetic characteristics in high speed IPM machines. Proceedings of the 2014 17th International Conference on Electrical Machines and Systems (ICEMS), Hangzhou, China.10.1109/ICEMS.2014.7013444 ↗
15. Analytical calculation of maximum mechanical stress on the rotor of interior permanent-magnet synchronous machines10.1109/TIA.2019.2960756 ↗
16. Comprehensive sensitivity analysis and multiphysics optimization of the rotor for a high speed permanent magnet machine10.1109/TEC.2020.3005568 ↗
17. Design of high-speed multilayer IPMSM using ferrite PM for EV traction considering mechanical and electrical characteristics10.1109/TIA.2020.3033783 ↗
18. A multi-physics design method for V-shape interior permanent-magnet machines based on multi-objective optimization10.1109/TEC.2019.2958928 ↗
19. A computationally efficient high-fidelity multi-physics design optimization of traction motors for drive cycle loss minimization10.1109/TIA.2022.3220554 ↗
20. Design and multiobjective optimization of dual-circulation cooling system considering electro-thermal coupling for IPMSM10.1109/TTE.2022.3224795 ↗
21. Multi-objective design optimization of an IPMSM based on multilevel strategy10.1109/TIE.2020.2965463 ↗
22. Surrogate modeling of electrical machine torque using artificial neural networks10.1109/ACCESS.2020.3042834 ↗
23. Loss analysis of high-speed permanent magnet motor based on energy saving and emission reduction10.1016/j.egyr.2023.01.053 ↗
24. Parametric sensitivity analysis and design optimization of an interior permanent magnet synchronous motor10.1109/ACCESS.2019.2950773 ↗
25. Design and multiobjective optimization of a new flux-concentrating rotor combining halbach PM array and spoke-type IPM machine10.1109/TMECH.2022.3196115 ↗
26. Optimal design of an interior permanent magnet synchronous motor by using a new surrogate-assisted multi-objective optimization
27. Praslicka, B., Taran, N., and Ma, C. (2022, January 15–17). An ultra-fast method for analyzing IPM motors at multiple operating points using surrogate models. Proceedings of the 2022 IEEE Transportation Electrification Conference & Expo (ITEC), Anaheim, CA, USA.10.1109/ITEC53557.2022.9814057 ↗
28. Rotor design of high-speed permanent magnet synchronous motors considering rotor magnet and sleeve materials10.1109/TASC.2017.2786690 ↗