Analytical Approach for Air-Gap Modeling of Field-Excited Flux-Switching Machine: No-Load Operation

This paper presents a general and accurate approach to determine the no-load flux of field-excited flux-switching (FE-FS) machines. These structures are inherently difficult to model due to their doubly-slotted air gap. This analytical approach is based on magnetomotive force-permeance theory. The a...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2012-09, Vol.48 (9), p.2505-2517
Main Authors: Gaussens, Benjamin, Hoang, Emmanuel, de la Barriere, Olivier, Saint-Michel, Jacques, Lecrivain, Michel, Gabsi, Mohamed
Format: Article
Language:English
Subjects:
Air gaps
Air-gap permeance
analytical model
Analytical models
Atmospheric modeling
Coils
Cross-disciplinary physics: materials science
rheology
Electromagnetism
Engineering Sciences
Exact sciences and technology
flux-switching
magnetic field
Materials science
modified magnetomotive force
Other topics in materials science
Physics
Rotors
slotting effect
Stators
switched flux
Topology
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Summary:This paper presents a general and accurate approach to determine the no-load flux of field-excited flux-switching (FE-FS) machines. These structures are inherently difficult to model due to their doubly-slotted air gap. This analytical approach is based on magnetomotive force-permeance theory. The analytical model developed is extensively compared to field distribution obtained with 2-D finite element (2-D FE) simulations. The good agreement observed between analytical model and 2-D FE results emphasizes the interest of this general approach regarding the computation time. Hence, this analytical approach is suitable for optimization process in pre-sizing loop. Furthermore, based on the field model, classical electromagnetic performances can be derived, such as flux linkage and back-electromotive force (back-EMF) and also, unbalanced magnetic force. Once again, FE results validate the analytical prediction, allowing investigations on several stator-rotor combinations, or optimization of the back-EMF.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2012.2196706