A Novel Counter-rotating Axial-flux Hybrid-excitation Permanent Magnet Machine with Dual-rotor

In order to better adapt to the load unbalance in the operation of counter-rotating propeller (CRP), a novel counter-rotating axial-flux hybrid-excitation permanent magnet machine (CR-AFHEPMM) is proposed in this paper, which combines the high torque density of the axial-flux permanent magnet machin...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2023-11, Vol.59 (11), p.1-1
Main Authors: Xia, Chenxi, Feng, Yaojing, Jia, Mengfan, Gao, Yuan, Huang, Shoudao
Format: Article
Language:English
Subjects:
Axial stress
axial-flux permanent magnet machine (AFPMM)
Coils (windings)
Counter-rotating
Excitation
hybrid excitation
Magnetism
Permanent magnets
Rotation
Rotors
Torque
Unbalance
unbalanced load
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Summary:In order to better adapt to the load unbalance in the operation of counter-rotating propeller (CRP), a novel counter-rotating axial-flux hybrid-excitation permanent magnet machine (CR-AFHEPMM) is proposed in this paper, which combines the high torque density of the axial-flux permanent magnet machine (AFPMM) and the flexible flux adjustment of the hybrid excitation machine. The DC field windings are installed near the inner diameter of the SMC stator core with a special structure, enabling reverse adjustment of the air-gap magnetic field on both sides. Unbalanced load operation of two rotors can be realized without increasing the machine volume. Firstly, the structural features and operation principle of the CR-AFHEPMM are presented. Then, the influence of slot-pole combination, permanent magnet (PM) arrangement and key structural parameters on the stable operation, output torque and load unbalance range are studied. Finally, an optimal structure of the Halbach array consequent-pole PM rotor is further proposed and analyzed. The results show that the proposed CR-AFHEPMM is a promising candidate for the application of CRP.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2023.3290588