volume | PIER Journals

Abstract

The rotor of PMa-BSynRM, with its multi-layer barriers and permanent magnet, poses a challenge in the design process as both torque system and suspension force system performance need to be considered comprehensively. To solve this problem, a multi-objective optimization method for the rotor structure of PMa-BSynRM is proposed in this paper. Firstly, the harmonic characteristics of PMa-BSynRM air gap magnetic field are analyzed based on the magnetic potential and magnetic permeability method. The expression for suspension force under the coupled magnetic field is derived by combining Maxwell tensor method. This analysis reveals the relationship between magnetic field characteristics and suspension force, providing guidance for subsequent optimization design. Secondly, through the analysis of the rotor structure, the macroscopic parameters related to the micro and detailed geometric optimization of the PMa-BSynRM rotor are proposed. Based on these macroscopic parameters, the response surface method and dual-population-based co-evolutionary algorithm (DPCA) are applied to realize a compromise among the optimization objectives. Finally, the proposed optimization method is comprehensively analyzed through simulation analysis and prototype experiment. The simulation and experimental results demonstrate a reduction of 51% in optimized torque ripple and 74% in suspension force ripple, as well as a decrease of 3.2˚ in the suspension force error angle. After optimization, the performance of the motor torque and suspension force system is significantly improved, thus verifying the effectiveness and superiority of the proposed optimization method.

1. Pei, Tonghao, Dawei Li, Jiayun Liu, Jian Li, and Wubin Kong, "Review of bearingless synchronous motors: Principle and topology," IEEE Transactions on Transportation Electrification, Vol. 8, No. 3, 3489-3502, Sep. 2022.

2. Beglinger, Lars, Daniel Steinert, Thomas Nussbaumer, and Jürgen Biela, "Concept and design of a bearingless spinfilter," IEEE/ASME Transactions on Mechatronics, Vol. 28, No. 4, 1817-1825, Aug. 2023.

3. Zad, Haris Sheh, Talha Irfan Khan, and Ismail Lazoglu, "Design and analysis of a novel bearingless motor for a miniature axial flow blood pump," IEEE Transactions on Industrial Electronics, Vol. 65, No. 5, 4006-4016, May 2018.

4. Wang, Xin and Huangqiu Zhu, "Vibration compensation control of BPMSM with dead-time effect based on adaptive neural network band-pass filter," IEEE Transactions on Power Electronics, Vol. 37, No. 6, 7145-7155, Jun. 2022.

5. Yu, Qiang, Xin Cao, Xu Deng, Tao Zhu, Zhiquan Deng, and Chengzi Liu, "An improved control strategy to reduce torque spikes and ripple for bearingless switched reluctance motors," IEEE Transactions on Industrial Informatics, Vol. 20, No. 4, 5147-5159, Apr. 2024.

6. Chen, Jiahao, Yusuke Fujii, Martin Willard Johnson, Ashad Farhan, and Eric L. Severson, "Optimal design of the bearingless induction motor," IEEE Transactions on Industry Applications, Vol. 57, No. 2, 1375-1388, Apr. 2021.

7. Mao, Bo and Huangqiu Zhu, "Unbalance vibration suppression control of PMa-BSynRM based on total least square adaptive filtering algorithm," IEEE Journal of Emerging and Selected Topics in Power Electronics, Vol. 11, No. 6, 5798-5808, Dec. 2023.

8. Xu, Meimei, Guohai Liu, Qian Chen, Jinghua Ji, and Wenxiang Zhao, "Design and optimization of a fault tolerant modular permanent magnet assisted synchronous reluctance motor with torque ripple minimization," IEEE Transactions on Industrial Electronics, Vol. 68, No. 9, 8519-8530, Sep. 2021.

9. Gallicchio, Gianvito, Mauro Di Nardo, Marco Palmieri, Alessandro Marfoli, Michele Degano, Chris Gerada, and Francesco Cupertino, "High speed permanent magnet assisted synchronous reluctance machines --- Part I: A general design approach," IEEE Transactions on Energy Conversion, Vol. 37, No. 4, 2556-2566, Dec. 2022.

10. Di Nardo, Mauro, Gianvito Gallicchio, Marco Palmieri, Alessandro Marfoli, Michele Degano, Chris Gerada, and Francesco Cupertino, "High speed permanent magnet assisted synchronous reluctance machines --- Part II: Performance boundaries," IEEE Transactions on Energy Conversion, Vol. 37, No. 4, 2567-2577, Dec. 2022.

11. Sun, Xiaodong, Zhou Shi, and Jianguo Zhu, "Multiobjective design optimization of an IPMSM for EVs based on fuzzy method and sequential Taguchi method," IEEE Transactions on Industrial Electronics, Vol. 68, No. 11, 10592-10600, Nov. 2021.

12. Gu, Jialei, Wei Hua, Wenfei Yu, Zhiheng Zhang, and Hengliang Zhang, "Surrogate model-based multiobjective optimization of high-speed PM synchronous machine: Construction and comparison," IEEE Transactions on Transportation Electrification, Vol. 9, No. 1, 678-688, Mar. 2023.

13. Zhu, Huangqiu, Shunan Shen, and Xin Wang, "Multiobjective optimization design of outer rotor coreless bearingless permanent magnet synchronous motor," IEEE Journal of Emerging and Selected Topics in Power Electronics, Vol. 9, No. 5, 5489-5498, Oct. 2021.

14. Wu, Mengyao, Huangqiu Zhu, Hao Zhang, and Weiyu Zhang, "Modeling and multilevel design optimization of an AC–DC three-degree-of-freedom hybrid magnetic bearing," IEEE Transactions on Industrial Electronics, Vol. 70, No. 1, 233-242, Jan. 2023.

15. Hua, Yizhou, Huangqiu Zhu, and Ying Xu, "Multi-objective optimization design of bearingless permanent magnet synchronous generator," IEEE Transactions on Applied Superconductivity, Vol. 30, No. 4, 1-5, Jun. 2020.

16. Sun, Xiaodong, Zhou Shi, Gang Lei, Youguang Guo, and Jianguo Zhu, "Multi-objective design optimization of an IPMSM based on multilevel strategy," IEEE Transactions on Industrial Electronics, Vol. 68, No. 1, 139-148, Jan. 2021.

17. Diao, Kaikai, Xiaodong Sun, Gang Lei, Youguang Guo, and Jianguo Zhu, "Multiobjective system level optimization method for switched reluctance motor drive systems using finite-element model," IEEE Transactions on Industrial Electronics, Vol. 67, No. 12, 10055-10064, Dec. 2020.

18. Cai, J., Z. Q. Deng, R. Y. Qi, Z. Y. Liu, and Y. H. Cai, "A novel BVC-RBF neural network based system simulation model for switched reluctance motor," IEEE Transactions on Magnetics, Vol. 47, No. 4, 830-838, Apr. 2011.

19. Moghaddam, Reza-Rajabi and Freddy Gyllensten, "Novel high-performance SynRM design method: An easy approach for a complicated rotor topology," IEEE Transactions on Industrial Electronics, Vol. 61, No. 9, 5058-5065, Sep. 2014.

20. Chiba, Akira, Tadashi Fukao, Osamu Ichikawa, Masahide Oshima, Masatugu Takemoto, and David G. Dorrell, Magnetic Bearings and Bearingless Drives, Elsevier, 2005.

21. Yi, Jun, Junren Bai, Wei Zhou, Haibo He, and Lizhong Yao, "Operating parameters optimization for the aluminum electrolysis process using an improved quantum-behaved particle swarm algorithm," IEEE Transactions on Industrial Informatics, Vol. 14, No. 8, 3405-3415, Aug. 2018.

22. Lin, Fan, Jiasong Zeng, Jianbing Xiahou, Beizhan Wang, Wenhua Zeng, and Haibin Lv, "Multiobjective evolutionary algorithm based on nondominated sorting and bidirectional local search for big data," IEEE Transactions on Industrial Informatics, Vol. 13, No. 4, 1979-1988, Aug. 2017.

Dr. Bo Mao

Dr. Xiaoyan Diao

Prof. Huangqiu Zhu

Dr. Jintao Ju