Li, G.J. orcid.org/0000-0002-5956-4033 and Zhu, Z.Q. orcid.org/0000-0001-7175-3307 (2015) Analytical modelling of modular and unequal tooth width surface-mounted permanent magnet machines. IEEE Transactions on Magnetics. ISSN 0018-9464
Abstract
This paper presents simple analytical modelling for 2 types of 3-phase surface-mounted permanent magnet (SPM) machines such as modular and unequal tooth width (UNET) machines with different slot/pole number combinations. It is based on the slotless open-circuit air-gap flux density and the slotted air-gap relative permeance calculations. This model allows calculating the open-circuit air-gap flux density, phase flux linkage and back electromotive force (EMF), average torque of both the modular and UNET machines. Its accuracy has been validated by 2D finite element (FE) method. A flux focusing/defocusing factor has also been introduced to analyse the influence of flux gaps in alternate stator teeth of modular machines on the machine electromagnetic performances. It has been found that by properly choosing the slot/pole number combination and flux gap width, the open-circuit air-gap flux density, the winding factor and the flux focusing effect can all be improved. As a result, the performance of modular machine can be significantly boosted. The analytical and FE models have been validated by experiments.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Editors: |
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Copyright, Publisher and Additional Information: | © 2015 IEEE. This is an author produced version of a paper subsequently published in IEEE Transactions on Magnetics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Analytical modelling; finite element; modular; permanent magnet; unequal tooth |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 19 Sep 2016 12:18 |
Last Modified: | 24 Mar 2018 15:19 |
Published Version: | http://dx.doi.org/10.1109/TMAG.2015.2432735 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers |
Refereed: | Yes |
Identification Number: | 10.1109/TMAG.2015.2432735 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:86803 |