Enhancing the Torque Density of Conventional PM-SynRel Machine with Hybrid Flux Barrier

Kumar, R. M. Ram; Vakil, Gaurang; Gerada, David; Walker, Adam; La Rocca, Salvatore; Al-Ani, Mahir; Gerada, Chris; Paciura, Krzysztof; McQueen, Alastair; Fernandes, B. G.

Abstract

Electrical machines with high torque density are required for traction application. Availability of bonded magnets with complex shapes and magnetization pattern can significantly extend the design space of electrical machines. This paper introduces a hybrid flux barriers design to improve the torque density of permanent magnet assisted synchronous reluctance (PM -SynRel) machine using ferrite magnets. The torque density with hybrid flux barriers is found to improve along the entire range of speed compared to the conventional flux barriers. The hybrid barrier design achieves similar performance to that of curved barrier with relatively flat shaped magnets in the last flux barrier. Thus, the hybrid barrier is able to enhance the torque density at a potentially reduced cost of manufacturing. The hybrid flux barrier design is validated for both electromagnetic and mechanical performance using commercial finite element analysis (FEA) packages.

Citation

Kumar, R. M. R., Vakil, G., Gerada, D., Walker, A., La Rocca, S., Al-Ani, M., …Fernandes, B. G. (2019). Enhancing the Torque Density of Conventional PM-SynRel Machine with Hybrid Flux Barrier. In IECON 2019 Proceedings - 45th Annual Conference of the IEEE Industrial Electronics Society (4347-4352). https://doi.org/10.1109/IECON.2019.8926624

• Conference Name: 45th Annual Conference of the IEEE Industrial Electronics Society (IECON 2019)
• Conference Location: Lisbon, Portugal
• Start Date: Oct 14, 2019
• End Date: Oct 17, 2019
• Acceptance Date: Jul 12, 2019
• Online Publication Date: Dec 9, 2019
• Publication Date: 2019-10
• Deposit Date: Mar 3, 2020
• Publicly Available Date: Mar 20, 2020
• Volume: 2019-October
• Pages: 4347-4352
• Series ISSN: 2577-1647
• Book Title: IECON 2019 Proceedings - 45th Annual Conference of the IEEE Industrial Electronics Society
• ISBN: 978-1-7281-4879-3
• DOI: https://doi.org/10.1109/IECON.2019.8926624
• Public URL: https://nottingham-repository.worktribe.com/output/4084349
• Publisher URL: https://ieeexplore.ieee.org/document/8926624
• Additional Information: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, 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 component of this work in other works.