On the investigation of the magnetic forces of CWPMM: Comparison between surface and interior PM topologies
ISSN: 0332-1649
Article publication date: 26 August 2014
Abstract
Purpose
The purpose of this paper is to investigate the magnetic forces generated by a 12 slot/10 pole concentrated winding PM machines, considering a comparative study between two topologies: a surface mounted permanent magnet (SPM) machine and an interior PM (IPM) machine.
Design/methodology/approach
Following a description of the main characteristics of the concentrated winding permanent magnet machines (CWPMMs) under comparison, an investigation of the magnetic forces developed by both machines under study is carried out using finite element analysis (FEA).
Findings
A 2D FEA-based investigation has highlighted that the SPM machine develops higher magnetic forces than the IPM one. However, and following a 3D FEA, it has been found that the distribution of the magnetic forces along the air gap of the SPM machine is almost homogenous while it is concentrated in two opposite positions in the air gap of the IPM machine.
Research limitations/implications
This work has treated almost all features of the machines under comparison, except the power losses. These should be investigated with emphasis on the PM eddy current losses is so far as the harmonic content of the armature air gap MMF is high.
Practical implications
The list of the selection criteria of CWPMMs should be extended to the magnetic force cancellation in order to fulfill the requirements of many applications such as the automotive ones.
Originality/value
The paper proposes a combined electromagnetic-mechanical approach to investigate the magnetic forces generated by CWPMMs using 2D and 3D FEA.
Keywords
Acknowledgements
The authors would like to thank the reviewers for their constructive comments. They sincerely believe that, thanks to these comments, the quality of the paper has been greatly improved.
Citation
Abdennadher, I. and Masmoudi, A. (2014), "On the investigation of the magnetic forces of CWPMM: Comparison between surface and interior PM topologies", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 33 No. 5, pp. 1502-1513. https://doi.org/10.1108/COMPEL-04-2014-0088
Publisher
:Emerald Group Publishing Limited
Copyright © 2014, Emerald Group Publishing Limited