An Improved Model for the Back-EMF and Cogging Torque Characteristics of a Novel Axial Flux Permanent Magnet Synchronous Machine With a Segmental Laminated Stator

An improved model for the back-electromagnetic-force (back-EMF) and cogging torque characteristics of a novel axial flux permanent magnet (AFPM) synchronous machine with a segmental laminated stator is presented. Based on a 3-D finite-element analysis (FEA) modeling approach that takes into the anis...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2009-10, Vol.45 (10), p.4609-4612
Main Authors: Fei, W., Luk, P.C.K.
Format: Article
Language:English
Subjects:
Anisotropic magnetoresistance
Anisotropic modeling
Anisotropy
axial flux permanent magnet (AFPM) machines
Cogging
Finite element method
Finite element methods
Flux
Forging
isotropic modeling
Magnetic cores
Magnetism
Mathematical models
Permanent magnet machines
Permanent magnets
Predictive models
segmental laminated stator
Stator cores
Stators
Synchronous machines
Torque
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Summary:An improved model for the back-electromagnetic-force (back-EMF) and cogging torque characteristics of a novel axial flux permanent magnet (AFPM) synchronous machine with a segmental laminated stator is presented. Based on a 3-D finite-element analysis (FEA) modeling approach that takes into the anisotropic properties of the machine's laminated cores, the proposed model provides superior performance prediction to existing isotropic models, in which lamination effects are not considered. An anisotropic model has been developed to predict the back-EMF and cogging torque of an existing prototype AFPM machine with optimized rotor magnets. Experimental results of the AFPM machine are compared against the results from the FEA models based on anisotropic and isotropic modeling, respectively. The results show that anisotropic modeling provides more accurate performance prediction of the AFPM machine with laminated cores.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2009.2024127