Lazari, P., Wang, J. and Sen, B. (2015) 3-D Effects of Rotor Step-Skews in Permanent Magnet-Assisted Synchronous Reluctance Machines. IEEE Transactions on Magnetics, 51 (11). 8112704. ISSN 0018-9464
Abstract
This paper focuses on the 3-D effects associated with rotor step-skews performed in permanent magnet-assisted synchronous reluctance machines (PMA SynRMs). It analyzes and quantifies these effects via comparisons between 2-D and 3-D finite-element analyses (FEA) of skewed and unskewed machines. The 3-D phenomena manifested in the skewed PMA SynRM are identified into end-effects and axial interactions between skewed steps, and their influence on its electromagnetic performance is examined under load and no-load conditions. This paper exemplifies the significance of the skew-associated 3-D effects, which can result in considerable decrease of the back electromotive force and a substantially increased electromagnetic torque ripple. It, thereby, highlights the inability of the typically employed multislice 2-D FEA or other existing 2-D-based modeling techniques in taking their influence into account. The validity of the findings is experimentally verified with measurements acquired from a prototype PMA SynRM using skewed and unskewed shafts in the rotor.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 IEEE. |
Keywords: | 3-D finite-element analysis (FEA); magnetic flux leakage; magnetic saturation; permanent magnet (PM) machines; skew; torque ripple |
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: | 22 Jan 2016 14:51 |
Last Modified: | 09 Mar 2016 10:43 |
Published Version: | http://dx.doi.org/10.1109/TMAG.2015.2446511 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers (IEEE) |
Refereed: | Yes |
Identification Number: | 10.1109/TMAG.2015.2446511 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:92032 |