Abstract
This paper proposes the electromagnetic modeling, prototype realization and test validation of a new triple-speed coaxial magnetic gear (TSCMG) for high torque/volume applications. The proposed magnetic gear is comprised of three rotors: inner rotor, middle rotor and outer rotor. The middle rotor has been changed to a new single-layer structure. Also, the proposed gear is compared with a conventional multi-speed model, the obtained results of which verify the increase in the torque and efficiency of the suggested gear. Moreover, the given gear shows an acceptable performance in terms of flux density distribution. The proposed TSCMG's configuration is based on the optimal design formula. Hence, after conducting analysis using the finite element method, a prototype was built and tested in the laboratory. The experimental results validate the presented design. The test results highlighted that the proposed structure provides higher toque density and superior performance.
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Atallah K, Rens J, Mezani S, Howe D (2008) A novel “pseudo” direct-drive brushless permanent magnet machine. IEEE Trans Magn 44(11):4349–4352
Chen M, Chau K, Li W, Liu C (2014) Cost-effectiveness comparison of coaxial magnetic gears with different magnet materials. IEEE Trans Magn 50(2):821–824
Johnson M, Gardner MC, Toliyat HA (2015) Analysis of axial field magnetic gears with Halbach arrays. In: 2015 IEEE International Electric Machines & Drives Conference (IEMDC). IEEE, pp 108–114
Zaini A, Niguchi N, Hirata K (2012) Continuously variable speed vernier magnetic gear. IEEE Trans Magn 48(11):3104–3107
Mallampalli S, Rallabandi V (2014) Parametric study of magnetic gear for maximum torque transmission. In: 2014 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES). IEEE. pp 1–5
Jørgensen FT andersen TO, Rasmussen PO (2006) The cycloid permanent magnetic gear. In: Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting. IEEE, pp 373–378
Li K, Bird J, Kadel J, Williams W (2015) A flux-focusing cycloidal magnetic gearbox. IEEE Trans Magn 51(11):1–4
Filippini M, Alotto P, Glehn G, Hameyer K (2018) Magnetic transmission gear finite element simulation with iron pole hysteresis. Open Physics 16(1):105–110
Shin H, Chang J (2015) Analytical magnetic field calculation of coaxial magnetic gear with flux concentrating rotor. IEEE Trans Magn 52(7):1–4
Bjørk GCD (2017) Design. Optimization and Analysis of a Single Rotor Magnetic Gear Electric Machine, NTNU
Zhang X, Liu X, Chen Z (2016) A novel coaxial magnetic gear and its integration with permanent-magnet brushless motor. IEEE Trans Magn 52(7):1–4
Mateev V, Todorova M, Marinova I Torque transmission characteristics of a coaxial magnetic gear. In: 2016 19th International Symposium on Electrical Apparatus and Technologies (SIELA), 2016. IEEE, pp 1–4
Benlamine R, Hamiti T, Vangraefschèpe F, Dubas F, Lhotellier D Modeling of a coaxial magnetic gear equipped with surface mounted PMs using nonlinear adaptive magnetic equivalent circuits. In: 2016 XXII International Conference on Electrical Machines (ICEM), 2016. IEEE, pp 1888–1894
Wang Q, Niu S, Yang S (2017) Design optimization and comparative study of novel magnetic-geared permanent magnet machines. IEEE Trans Magn 53(6):1–4
Zhao X, Niu S (2017) Design and optimization of a new magnetic-geared pole-changing hybrid excitation machine. IEEE Trans Industr Electron 64(12):9943–9952
Filippini M, Alotto P (2017) Coaxial magnetic gear design and optimization. IEEE Trans Industr Electron 64(12):9934–9942
Zhang X, Liu X, Chen Z (2017) A novel dual-flux-modulator coaxial magnetic gear for high torque capability. IEEE Trans Energy Convers 33(2):682–691
Zhu X, Xiang Z, Quan L, Chen Y, Mo L (2018) Multimode optimization research on a multiport magnetic planetary gear permanent magnet machine for hybrid electric vehicles. IEEE Trans Industr Electron 65(11):9035–9046
Floris A, Serpi A, Porru M, Fois G, Damiano A Design of a double-stage magnetic gear for high-speed electric propulsion systems. In: 2018 XIII International Conference on Electrical Machines (ICEM), 2018. IEEE, pp 670–676
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Moghimi, A., Hosseini Aliabadi, M. & Feshki Farahani, H. Magnetic modeling, comparative study and prototyping of a Triple-speed coaxial magnetic gear. Electr Eng 103, 1701–1710 (2021). https://doi.org/10.1007/s00202-020-01163-8
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DOI: https://doi.org/10.1007/s00202-020-01163-8