Li, G. orcid.org/0000-0002-5956-4033, Ren, B., Zhu, Z.Q. orcid.org/0000-0001-7175-3307 et al. (2 more authors) (2015) Cogging torque mitigation of modular permanent magnet machines. IEEE Transactions on Magnetics. ISSN 0018-9464
Abstract
This paper proposes a novel cogging torque mitigation method for modular permanent magnet (PM) machines with flux gaps in alternate stator teeth. The slot openings of the modular PM machines are divided into two groups in a special way. By shifting the slot openings of two groups in opposite directions with the same angle, the machine cogging torque can be significantly reduced. Analytical formula of the desired shift angle is derived, and can be applicable to other modular machines with different slot/pole number combinations. Meanwhile, the influence of the proposed method on phase back-EMF is investigated and the three phase back-EMF waveforms remain balanced for all slot/pole number combinations after slot shifting. Experiments based on existing prototypes are carried out to validate the finite element modelling.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. |
Keywords: | Cogging torque; modular machine; permanent magnet (PM); slot opening shift; torque ripple |
Dates: |
|
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 12:48 |
Last Modified: | 22 Mar 2018 01:02 |
Published Version: | http://dx.doi.org/10.1109/TMAG.2015.2477489 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers |
Refereed: | Yes |
Identification Number: | 10.1109/TMAG.2015.2477489 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:91448 |