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Issue title: Selected papers from the International Symposium on Applied Electromagnetics and Mechanics - ISEM 2019
Guest editors: Jinhao Qiu, Ke Xiong and Hongli Ji
Article type: Research Article
Authors: Kim, Se-Yeonga | Lee, Tae-Wooa | Chun, Yon-Doa; b | Hong, Do-Kwana; b;
Affiliations: [a] Department of Energy and Power Conversion Engineering, University of Science and Technology, Changwon, Korea | [b] Electric Machines and Drives Research Center, Korea Electrotechnology Research Institute, Changwon, Korea
Correspondence: [*] Corresponding author: Do-Kwan Hong, IEEE Senior Member, Korea Electrotechnology Research Institute, Changwon, Korea. E-mail: dkhong@keri.re.kr, dkhong@ust.ac.kr
Abstract: In this study, we propose a non-contact 80 kW, 60,000 rpm coaxial magnetic gear (CMG) model for high speed and high power applications. Two models with the same power but different radial and axial sizes were optimized using response surface methodology. Both models employed a Halbach array to increase torque. Also, an edge fillet was applied to the radial magnetized permanent magnet to reduce torque ripple, and an axial gap was applied to the permanent magnet with a radial gap to reduce eddy current loss. The models were analyzed using 2-D and 3-D finite element analysis. The torque, torque ripple and eddy current loss were compared in both models according to the materials used, including Sm2Co17, NdFeBs (N42SH, N48SH). Also, the structural stability of the pole piece structure was investigated by forced vibration analysis. Critical speed results from rotordynamics analysis are also presented.
Keywords: Eddy current loss, forced vibration analysis, rotordynamics analysis, Halbach array, high speed and high power coaxial magnetic gear
DOI: 10.3233/JAE-209410
Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 64, no. 1-4, pp. 959-967, 2020
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