Back to Search Start Over

Multi-layer quasi three-dimensional equivalent model of axial-flux permanent magnet synchronous machine

Authors :
Mingjie He
Weiye Li
Jun Peng
Jiangtao Yang
Source :
CES Transactions on Electrical Machines and Systems, Vol 5, Iss 1, Pp 3-12 (2021)
Publication Year :
2021
Publisher :
China Electrotechnical Society, 2021.

Abstract

Axial-flux permanent magnet synchronous machine (AFPMSM) enjoys the merits of high torque density and high efficiency, which make it one good candidate in the direct-drive application. The AFPMSM is usually analyzed based on the three-dimensional finite element method (3D FEM) due to its three-dimensional magnetic field distribution. However, the 3D FEM suffers large amount of calculation, time-consuming and is not suitable for the optimization of AFPMSM. Addressing this issue, a multi-layer quasi three-dimensional equivalent model of the AFPMSM is investigated in this paper, which could take the end leakage into consideration. Firstly, the multi-layer quasi three-dimensional equivalent model of the AFPMSM with single stator and single rotor is derived in details, including the equivalent processes and conversions of structure dimensions, motion conditions and electromagnetic parameters. Then, to consider the influence of end leakage on the performance, a correction factor is introduced in the multi-layer quasi three-dimensional equivalent model. Finally, the proposed multi-layer quasi three-dimensional equivalent model is verified by the 3D FEM based on an AFPMSM under different structure parameters. It demonstrates that the errors of flux linkage and average torque obtained by the multi-layer quasi three-dimensional equivalent model and 3D FEM are only around 2% although the structure parameters of the AFPMSM are varied. Besides, the computation time of one case based on the multi-layer quasi three-dimensional equivalent model is only 6 min, which is much less than that of the 3D FEM, 1.8 h, under the same conditions. Thus, the proposed multi-layer quasi three-dimensional equivalent model could be used to optimize the AFPMSM and much time could be saved by this method compared with the 3D FEM.

Details

Language :
English
ISSN :
20963564 and 28370325
Volume :
5
Issue :
1
Database :
Directory of Open Access Journals
Journal :
CES Transactions on Electrical Machines and Systems
Publication Type :
Academic Journal
Accession number :
edsdoj.89ae9a072452f9d0c360dc388618e
Document Type :
article
Full Text :
https://doi.org/10.30941/CESTEMS.2021.00002