| Download | - View final version: Permanent magnets with embedded phase changing material for electric motor thermal management (PDF, 3.2 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1063/5.0219982 |
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| Author | Search for: Lamarre, Jean-Michel1ORCID identifier: https://orcid.org/0000-0001-5456-0810; Search for: Ibrahim, Maged; Search for: Pelletier, Roger1ORCID identifier: https://orcid.org/0000-0001-9668-474X; Search for: Vatandoost, Hossein1ORCID identifier: https://orcid.org/0000-0003-3743-338X; Search for: Bernier, Fabrice1ORCID identifier: https://orcid.org/0000-0001-5729-8045 |
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| Affiliation | - National Research Council of Canada. Automotive and Surface Transportation
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| Funder | Search for: Natural Resources Canada. Office of Energy Research and Development |
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| Format | Text, Article |
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| Subject | magnetic materials; eddy current; phase transitions; electric vehicles; thermodynamic properties; electric motors; synchronous motor; materials properties |
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| Abstract | The magnetic performance of NdFeB permanent magnets rapidly decreases as their operation temperature increases. This limits the power output of electric motors as their internal temperature quickly increases with the power demand. This is particularly problematic for applications where high peak power is required for a short period of time, for example during automobile highway acceleration or during an airplane lift-off. With the advances in additive manufacturing, one can envision to fabricate more complex motor geometries and magnetic structures, without additional costs, allowing for enhanced functionalities such as better thermal management. In this context, this paper investigates the feasibility of using phase changing materials (PCMs) to mitigate the temperature rise in permanent magnets (PMs) fabricated by additive manufacturing. The potential of PCM and its relevance was validated by modeling the thermal response of an electric motor during a representative electric vehicle driving scenario. It was found that segmented magnets with embedded phase changing materials would allow to efficiently control temperature rise. To validate the simulation results, PM test pieces with and without embedded PCMs were fabricated using cold spray additive manufacturing and tested using a custom laser thermal cycling setup. |
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| Publication date | 2024-11-05 |
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| Publisher | AIP Publishing |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | fa1121e9-3f1e-4d24-8fc5-10a3ef292637 |
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| Record created | 2025-01-28 |
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| Record modified | 2025-11-05 |
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