volume | PIER Journals

Abstract

Coaxial magnetic gear (CMG) with magnetic field modulation mechanism features high torque density, non-contact transmis-sion, and overload automatic protection, making it an optimal substitute for mechanical gears. Considering the unbalanced mag-netic pull caused by the modulation effect of magnetic field and the component eccentricities, the deformations of the key fer-romagnetic pole-pieces (FPs) are analyzed with and without magnetic-force-structure multi-field coupling. Then, the segmenta-tion and reinforcement ideas based on bionic-bamboo are proposed in order to reduce the deformation of FPs. The functional relationships among FPs structural parameters, the output torque of CMG and the deformation of FPs are established with the orthogonal test method and response surface method. Based on NSGA-Ⅲ, the optimal parameters of FPs are obtained, and the corresponding deformation is greatly reduced. Finally, it is proved that the bionic-bamboo FPs can effectively reduce its defor-mation by the experiment and finite element simulation.

1. Atallah, K. and D. Howe, "A novel high-performance magnetic gear," IEEE Transactions on Magnetics, Vol. 37, No. 4, 2844-2846, 2001. Google Scholar

2. Rasmussen, P. O., T. O. Andersen, F. T. Jorgensen, and O. Nielsen, "Development of a high-performance magnetic gear," IEEE Transactions on Industry Applications, Vol. 41, No. 3, 764-770, 2005. Google Scholar

3. Hou, S. B., S. Luo, J. Chan, W. C. Wu, Y. F. Zhou, and X. H. Hao, "Design formula of coaxial magnetic gear based on output torque," Journal of Yanshan University, Vol. 48, No. 4, 303-311, 2024. Google Scholar

4. Wang, Yawei, Mattia Filippini, Nicola Bianchi, and Piergiorgio Alotto, "A review on magnetic gears: Topologies, computational models, and design aspects," IEEE Transactions on Industry Applications, Vol. 55, No. 5, 4557-4566, 2019. Google Scholar

5. Jing, L., L. Liu, Y. Zhang, and J. Su, "Parameters analysis and optimization design for concentric magnetic gear with halbach permanent-magnet arrays," Electricmachines and Control, Vol. 20, No. 3, 6-12, 2016. Google Scholar

6. Kim, Sung Jin, Eui-Jong Park, Sang-Yong Jung, and Yong-Jae Kim, "Transfer torque performance comparison in coaxial magnetic gears with different flux-modulator shapes," IEEE Transactions on Magnetics, Vol. 53, No. 6, 1-4, 2017. Google Scholar

7. Liu, Y., J. Y. Cao, and J. C. Liu, "Mechanical performance analysis of field modulated magnetic gearbased on analytical model," Journal of Mechanical Transmission, Vol. 37, No. 1, 1-5, 2013. Google Scholar

8. Zhang, Xiaoxu, Xiao Liu, and Zhe Chen, "A novel dual-flux-modulator coaxial magnetic gear for high torque capability," IEEE Transactions on Energy Conversion, Vol. 33, No. 2, 682-691, 2017. Google Scholar

9. Wang, Jungang, Caifu Yu, Bin Zhang, and Ruina Mo, "Electromagnetic performance analysis of a novel hybrid double-modulated magnetic gear with transverse skewed slotted magnetic field modulation ring," Journal of Electrical Engineering & Technology, Vol. 20, 403-414, 2025. Google Scholar

10. Kowol, Marcin, Janusz Kołodziej, Mariusz Jagieła, and Marian Łukaniszyn, "Impact of modulator designs and materials on efficiency and losses in radial passive magnetic gear," IEEE Transactions on Energy Conversion, Vol. 34, No. 1, 147-154, 2018. Google Scholar

11. Cansiz, Ahmet and Emre Akyerden, "The use of high temperature superconductor bulk in a co-axial magnetic gear," Cryogenics, Vol. 98, 80-86, 2019. Google Scholar

12. Jian, Linni, K. T. Chau, Wenlong Li, and Jiangui Li, "A novel coaxial magnetic gear using bulk HTS for industrial applications," IEEE Transactions on Applied Superconductivity, Vol. 20, No. 3, 981-984, 2010. Google Scholar

13. Li, Wenlong, K. T. Chau, and Jiangui Li, "Simulation of a tubular linear magnetic gear using HTS bulks for field modulation," IEEE Transactions on Applied Superconductivity, Vol. 21, No. 3, 1167-1170, 2010. Google Scholar

14. Yin, Xin, Youtong Fang, and Pierre-Daniel Pfister, "A novel single-PM-array magnetic gear with HTS bulks," IEEE Transactions on Applied Superconductivity, Vol. 27, No. 4, 1-5, 2017. Google Scholar

15. Jian, Linni, Zhengxing Deng, Yujun Shi, Jin Wei, and C. C. Chan, "The mechanism how coaxial magnetic gear transmits magnetic torques between its two rotors: Detailed analysis of torque distribution on modulating ring," IEEE/ASME Transactions on Mechatronics, Vol. 24, No. 2, 763-773, 2019. Google Scholar

16. Lu, Yang-Hui, Shuai Luo, and Su-Jun Wu, "Influence of material properties of magnetic adjusting ring on the loss of magnetic gear," Journal of Mechanical Engineering, Vol. 58, No. 22, 269-275, 2022.
doi:10.3901/JME.2022.22.269 Google Scholar

17. Hu, Yuda, Tianxiao Cao, and Mengxue Xie, "Magnetic-structure coupling dynamic model of a ferromagnetic plate parallel moving in air-gap magnetic field," Acta Mechanica Sinica, Vol. 38, No. 10, 522084, 2022. Google Scholar

18. Chen, Wei-Hsin, Manuel Carrera Uribe, Eilhann E. Kwon, Kun-Yi Andrew Lin, Young-Kwon Park, Lu Ding, and Lip Huat Saw, "A comprehensive review of thermoelectric generation optimization by statistical approach: Taguchi method, analysis of variance (ANOVA), and response surface methodology (RSM)," Renewable and Sustainable Energy Reviews, Vol. 169, 112917, 2022. Google Scholar

19. Sun, Yue, Le Cai, Yingjie Chen, and Songtao Wang, "Optimization of a high through-flow design turbine using response surface method," Physics of Fluids, Vol. 36, No. 4, 046106, 2024. Google Scholar

20. Sun, Xiaodong, Naixi Xu, and Ming Yao, "Sequential subspace optimization design of a dual three-phase permanent magnet synchronous hub motor based on NSGA III," IEEE Transactions on Transportation Electrification, Vol. 9, No. 1, 622-630, 2023. Google Scholar

21. Deb, Kalyanmoy and Himanshu Jain, "An evolutionary many-objective optimization algorithm using reference-point-based nondominated sorting approach, part I: Solving problems with box constraints," IEEE Transactions on Evolutionary Computation, Vol. 18, No. 4, 577-601, 2014. Google Scholar

22. Chen, Chen, Yanbin Yuan, and Xiaohui Yuan, "An improved NSGA-III algorithm for reservoir flood control operation," Water Resources Management, Vol. 31, 4469-4483, 2017. Google Scholar

23. Wu, Yun, Du Yan, Jie-Ming Yang, An-Ping Wang, and Dan Feng, "Optimal scheduling strategy of electric vehicle based on improved NSGA-III algorithm," Plos One, Vol. 19, No. 5, e0298572, 2024. Google Scholar

24. Holanda, José, "Analyzing the magnetic interactions in nanostructures that are candidates for applications in spintronics," Journal of Physics D: Applied Physics, Vol. 54, No. 24, 245004, 2021. Google Scholar

Dr. Yufeng Zhou

Dr. Heng Yang

Dr. Shuai Luo

Professor Xiuhong Hao