Zhang, W., Li, Guang-Jin orcid.org/0000-0002-5956-4033, Ren, B. et al. (2 more authors) (2023) Demagnetization analysis of modular SPM machine based on coupled electromagnetic-thermal modelling. Energies, 16 (1). 131. ISSN 1996-1073
Abstract
This paper investigates magnet demagnetization characteristics of the modular permanent magnet machine. The influence of flux gaps on magnet flux density, losses distribution, torque and demagnetization are analyzed for different operating conditions. The magnet demagnetizations caused by three sources, such as the PM field, the armature field, and the magnet temperature rise, are individually investigated using the frozen permeability method. Furthermore, coupled electromagnetic (EM)-thermal modelling is also adopted in this paper to fully reveal the advantages of the modular machine in improving machine EM performances. This is essential due to the temperature-dependent properties of the machines, such as the magnet remanence, coercivity, and copper resistivity. For comparison propose, the EM performances with a particular focus on the demagnetization withstand capability for both the modular and non-modular machines are investigated based on the EM-thermal coupling. It is found that, compared to the non-modular machine, the modular machine can achieve higher torque, higher efficiency, and better demagnetization withstand capability.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Authors. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
Keywords: | coupled electromagnetic-thermal modelling; flux gaps; frozen permeability; irreversible demagnetization; modular SPM machine |
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) |
Funding Information: | Funder Grant number MOTOR DESIGN LTD UNSPECIFIED |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 04 Jan 2023 12:27 |
Last Modified: | 25 Jun 2023 23:12 |
Status: | Published |
Publisher: | MDPI AG |
Refereed: | Yes |
Identification Number: | 10.3390/en16010131 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:194844 |