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Effect of segmentation on eddy-current loss in permanent-magnets of axial-flux PM machines using a multilayer-2D-2D coupled model

Hendrik Vansompel UGent, Peter Sergeant UGent and Luc Dupré UGent (2012) 2012 XXth international conference on electrical machines (ICEM). p.228-232
abstract
On the rotors of an axial-flux PM machine, NdFeB permanent-magnets are very often placed because of their high energy density. As the NdFeB-magnets are good electric conductive, electric currents are induced in the magnets when they are exposed to a varying magnetic field. This varying magnetic field has two causes: variation of the airgap reluctance due to the effect of stator-slots, and armature reaction due to the stator currents. As axial-flux PM machines have an inherent 3D-geometry, full 3D-finite element modeling seems necessary to calculate the eddy currents in the permanent-magnets and to evaluate their corresponding losses. In this paper, however, the 1D airgap magnetic fields of multiple multilayer 2D finite element simulations are combined to a 2D airgap magnetic field using static simulations. In a subsequent step, this 2D airgap magnetic field is imposed to a 2D finite element model of the permanent-magnet to calculate the eddy currents and eddy current losses. Afterwards, the introduced multilayer-2D - 2D coupled model is used to study the effect of segmentation on the eddy-current loss in the permanent magnets of an axial-flux PM machine simulating different segmentation grades.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
keyword
permanent magnet generators, permanent magnet segmentation, finite element methods, eddy currents, Armature reaction, WINDINGS, POLE, axial-flux machine, BRUSHLESS MACHINES, DESIGN, FINITE-ELEMENT-ANALYSIS, permanent-magnets, SYNCHRONOUS GENERATOR
in
2012 XXth international conference on electrical machines (ICEM)
pages
228 - 232
publisher
IEEE
place of publication
New York, NY, USA
conference name
20th International conference on Electrical machines (ICEM 2012)
conference location
Marseille, France
conference start
2012-09-02
conference end
2012-09-05
Web of Science type
Proceedings Paper
Web of Science id
000333806700033
ISBN
9781467301428
9781467301411
DOI
10.1109/ICElMach.2012.6349869
language
English
UGent publication?
yes
classification
P1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2985244
handle
http://hdl.handle.net/1854/LU-2985244
date created
2012-09-12 10:28:37
date last changed
2014-08-12 12:05:01
@inproceedings{2985244,
  abstract     = {On the rotors of an axial-flux PM machine, NdFeB permanent-magnets are very often placed because of their high energy density. As the NdFeB-magnets are good electric conductive, electric currents are induced in the magnets when they are exposed to a varying magnetic field. This varying magnetic field has two causes: variation of the airgap reluctance due to the effect of stator-slots, and armature reaction due to the stator currents. As axial-flux PM machines have an inherent 3D-geometry, full 3D-finite element modeling seems necessary to calculate the eddy currents in the permanent-magnets and to evaluate their corresponding losses. In this paper, however, the 1D airgap magnetic fields of multiple multilayer 2D finite element simulations are combined to a 2D airgap magnetic field using static simulations. In a subsequent step, this 2D airgap magnetic field is imposed to a 2D finite element model of the permanent-magnet to calculate the eddy currents and eddy current losses. Afterwards, the introduced multilayer-2D - 2D coupled model is used to study the effect of segmentation on the eddy-current loss in the permanent magnets of an axial-flux PM machine simulating different segmentation grades.},
  author       = {Vansompel, Hendrik and Sergeant, Peter and Dupr{\'e}, Luc},
  booktitle    = {2012 XXth international conference on electrical machines (ICEM)},
  isbn         = {9781467301428},
  keyword      = {permanent magnet generators,permanent magnet segmentation,finite element methods,eddy currents,Armature reaction,WINDINGS,POLE,axial-flux machine,BRUSHLESS MACHINES,DESIGN,FINITE-ELEMENT-ANALYSIS,permanent-magnets,SYNCHRONOUS GENERATOR},
  language     = {eng},
  location     = {Marseille, France},
  pages        = {228--232},
  publisher    = {IEEE},
  title        = {Effect of segmentation on eddy-current loss in permanent-magnets of axial-flux PM machines using a multilayer-2D-2D coupled model},
  url          = {http://dx.doi.org/10.1109/ICElMach.2012.6349869},
  year         = {2012},
}

Chicago
Vansompel, Hendrik, Peter Sergeant, and Luc Dupré. 2012. “Effect of Segmentation on Eddy-current Loss in Permanent-magnets of Axial-flux PM Machines Using a multilayer-2D-2D Coupled Model.” In 2012 XXth International Conference on Electrical Machines (ICEM), 228–232. New York, NY, USA: IEEE.
APA
Vansompel, H., Sergeant, P., & Dupré, L. (2012). Effect of segmentation on eddy-current loss in permanent-magnets of axial-flux PM machines using a multilayer-2D-2D coupled model. 2012 XXth international conference on electrical machines (ICEM) (pp. 228–232). Presented at the 20th International conference on Electrical machines (ICEM 2012), New York, NY, USA: IEEE.
Vancouver
1.
Vansompel H, Sergeant P, Dupré L. Effect of segmentation on eddy-current loss in permanent-magnets of axial-flux PM machines using a multilayer-2D-2D coupled model. 2012 XXth international conference on electrical machines (ICEM). New York, NY, USA: IEEE; 2012. p. 228–32.
MLA
Vansompel, Hendrik, Peter Sergeant, and Luc Dupré. “Effect of Segmentation on Eddy-current Loss in Permanent-magnets of Axial-flux PM Machines Using a multilayer-2D-2D Coupled Model.” 2012 XXth International Conference on Electrical Machines (ICEM). New York, NY, USA: IEEE, 2012. 228–232. Print.