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Surface Permanent Magnet Synchronous Machines: High Speed Design and Limits

Gallicchio, Gianvito; Nardo, Mauro Di; Palmieri, Marco; Ilkhani, Mohammad Reza; Degano, Michele; Gerada, Chris; Cupertino, Francesco

Surface Permanent Magnet Synchronous Machines: High Speed Design and Limits Thumbnail


Authors

Gianvito Gallicchio

Mauro Di Nardo

Marco Palmieri

MICHELE DEGANO Michele.Degano@nottingham.ac.uk
Professor of Advanced Electrical Machines

Francesco Cupertino



Abstract

Surface permanent magnet synchronous machines are one of the most widely adopted machine topologies in high-speed applications where efficiency and power factor cannot be compromised. Although the design of such machine type has been extensively investigated in both industry and academia, this work aims at addressing its limitations when applied in high-speed applications. First, this paper proposes an accurate design methodology for continuous-duty high-speed surface-mounted permanent magnets synchronous machines, capable of accounting for the rise of the speed-dependent losses and structural needs with a limited impact on the computational burden. The outlined approach can be used to speed-up the initial design stage as it allows to reduce the number of solutions to evaluate before commencing the refinement stages required before the definition of the final design. Indeed, the introduced design approach is used to systematically assess the maximum power capability as function of the maximum speed and the airgap thickness for a given outer envelope and cooling system. The influence of the high-speed limiting factors is deeply investigated also considering their effects on the machine geometries providing the highest torque. The selection of the final design is discussed and justified. Experimental results of the 4.2kW-80kprm prototype validate the design methodology.

Citation

Gallicchio, G., Nardo, M. D., Palmieri, M., Ilkhani, M. R., Degano, M., Gerada, C., & Cupertino, F. (2023). Surface Permanent Magnet Synchronous Machines: High Speed Design and Limits. IEEE Transactions on Energy Conversion, 38(2), 1311-1324. https://doi.org/10.1109/tec.2022.3225224

Journal Article Type Article
Acceptance Date Nov 23, 2022
Online Publication Date Nov 28, 2022
Publication Date 2023-06
Deposit Date Jan 5, 2023
Publicly Available Date Mar 28, 2024
Journal IEEE Transactions on Energy Conversion
Print ISSN 0885-8969
Electronic ISSN 1558-0059
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Peer Reviewed Peer Reviewed
Volume 38
Issue 2
Pages 1311-1324
DOI https://doi.org/10.1109/tec.2022.3225224
Keywords Electrical and Electronic Engineering; Energy Engineering and Power Technology
Public URL https://nottingham-repository.worktribe.com/output/14322490
Publisher URL https://ieeexplore.ieee.org/abstract/document/9964445

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