TY - JOUR
T1 - Comparison of two different interior permanent magnet type low-speed rotor structures of axial-flux magnetic gear
AU - Dai, Boqun
AU - Nakamura, Kenji
AU - Suzuki, Yuma
AU - Tachiya, Yuichi
AU - Kuritani, Kingo
N1 - Funding Information:
On the other hand, it is still necessary to optimize the structure to reduce eddy current loss in the PMs and iron loss in the back-yokes and pole-pieces to improve the efficiency, especially at high rotational speed, which are future works. Acknowledgment This work was supported in part by the WISE Program for AI Electronics, Tohoku University.
Publisher Copyright:
© 2021 Institute of Electrical Engineers of Japan. All rights reserved.
PY - 2021
Y1 - 2021
N2 - Magnetic gears have beneficial features such as low vibration and maintenance-free owing to no mechanical contacts. Among the several types of the magnetic gears, a flux-modulated type magnetic gear has a higher torque density than the other types. Thus, it is expected to be put into practical use. Previous studies have verified that an interior permanent magnet (IPM) structure rotor can reduce the eddy current loss in magnets. In this study, IPM rotor structures proper to a flux-modulated type axial-flux magnetic gear (AFMG) were investigated. Two types of IPM low-speed rotor structures, one is a spoke-shape and the other is a segment-shape, were compared in terms of torque and efficiency. Furthermore, to prove the validity of the proposed rotor structure, prototype tests were conducted.
AB - Magnetic gears have beneficial features such as low vibration and maintenance-free owing to no mechanical contacts. Among the several types of the magnetic gears, a flux-modulated type magnetic gear has a higher torque density than the other types. Thus, it is expected to be put into practical use. Previous studies have verified that an interior permanent magnet (IPM) structure rotor can reduce the eddy current loss in magnets. In this study, IPM rotor structures proper to a flux-modulated type axial-flux magnetic gear (AFMG) were investigated. Two types of IPM low-speed rotor structures, one is a spoke-shape and the other is a segment-shape, were compared in terms of torque and efficiency. Furthermore, to prove the validity of the proposed rotor structure, prototype tests were conducted.
KW - Axial-flux-type magnetic gear (AFMG)
KW - Interior permanent magnet (IPM)
KW - Segment-shape
KW - Spoke-shape
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U2 - 10.1541/ieejjia.20013243
DO - 10.1541/ieejjia.20013243
M3 - Article
AN - SCOPUS:85118799262
SN - 2187-1094
VL - 10
SP - 632
EP - 637
JO - IEEJ Journal of Industry Applications
JF - IEEJ Journal of Industry Applications
IS - 6
ER -