Comparison of Axial Flux Permanent Magnet Synchronous Machines With Electrical Steel Core and Soft Magnetic Composite Core

This paper presents a comparison of axial flux permanent magnet machines (AFPMs) with an electrical steel core and that with a soft magnetic composite (SMC) core. SMCs have several advantages such as low core loss and low eddy current loss. However, compared with electrical steel, SMCs have poor mag...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2017-11, Vol.53 (11), p.1-4
Main Authors: Kim, Chang-Woo, Jang, Gang-Hyeon, Kim, Jeong-Man, Ahn, Ji-Hun, Baek, Chan-Ho, Choi, Jang-Young
Format: Article
Language:English
Subjects:
Axial flux permanent magnet (AFPM) motor
Core loss
Current loss
double-sided rotor
Eddy current testing
Eddy currents
Electrical steels
electromagnetic loss analysis
Electromagnetic properties
Flux density
Magnetic cores
Magnetic permeability
Magnetic properties
Magnetism
soft magnetic composite (SMC) core
Stator cores
Steel
Steel industry
Synchronous machines
Thermal analysis
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Summary:This paper presents a comparison of axial flux permanent magnet machines (AFPMs) with an electrical steel core and that with a soft magnetic composite (SMC) core. SMCs have several advantages such as low core loss and low eddy current loss. However, compared with electrical steel, SMCs have poor magnetic properties such as low flux density saturation and unsaturated relative permeability. The analysis of the electromagnetic characteristics in a wide frequency range revealed that for an AFPM using an electric steel core, the performance was excellent in a low-frequency range; however, for an AFPM using an SMC core, the performance improves with an increase in frequency. Finally, the operation area of an AFPM using an SMC core is proposed.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2017.2701792