Zhang, W., Li, G.-J. orcid.org/0000-0002-5956-4033, Zhu, Z.-Q. orcid.org/0000-0001-7175-3307 et al. (2 more authors) (2023) Coupled electromagnetic–thermal modelling of dynamic performance for modular SPM machines. Energies, 16 (6). 2516. ISSN 1996-1073
Abstract
This paper presents coupled electromagnetic (EM)–thermal modelling of the steady-state dynamic performances, such as torque speed curve and the efficiency map, for surface-mounted permanent magnet machines. One important feature of such a model is that it considers the demagnetization caused by magnet temperature rise at different rotor speeds. EM-only simulations, which often assume that the machines operate under constant temperature, have been widely used in the literature. However, the interaction between EM and thermal performances could lead to very different dynamic performance prediction. This is because the material properties, e.g., magnet remanence, coercivity, and copper resistivity are temperature-dependent. The temperature rise within electrical machines reduces torque/power density, PM eddy current losses, and iron losses but increases copper loss. Therefore, the coupled EM–thermal modelling is essential to determine accurate temperature variation and to obtain accurate EM performances of electrical machines. In this paper, the coupled EM–thermal modelling is implemented for both modular and non-modular machines to reveal the advantages of the modular machine under different operating conditions. The results show that the modular machine generally has better dynamic performance than the non-modular machine because the introduced flux gaps in alternate stator teeth can boost both EM and thermal performance.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
Keywords: | coupled electromagnetic–thermal modelling; demagnetization; flux gaps; 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 ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/T017988/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Mar 2023 11:36 |
Last Modified: | 08 Mar 2023 11:36 |
Status: | Published |
Publisher: | MDPI AG |
Refereed: | Yes |
Identification Number: | 10.3390/en16062516 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:197128 |