Influence of rotor endcaps on the electromagnetic performance of high speed PM machine
Surface-mounted permanent magnet (SPM) machines are preferred for high-speed aerospace applications over induction and switched reluctance machines, since they combine the advantages of high torque density and efficiency. Also, in aerospace applications, where low rotor weight and inertia are essent...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Institution of Engineering and Technology
2018
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| Online Access: | https://eprints.nottingham.ac.uk/50206/ |
| _version_ | 1848798184873132032 |
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| author | Al-Timimy, Ahmed Alani, Mahir Degano, Michele Giangrande, Paolo Galea, Michael Gerada, Christopher |
| author_facet | Al-Timimy, Ahmed Alani, Mahir Degano, Michele Giangrande, Paolo Galea, Michael Gerada, Christopher |
| author_sort | Al-Timimy, Ahmed |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Surface-mounted permanent magnet (SPM) machines are preferred for high-speed aerospace applications over induction and switched reluctance machines, since they combine the advantages of high torque density and efficiency. Also, in aerospace applications, where low rotor weight and inertia are essential requirements, a permeable hollow shaft is proposed to replace the need for rotor back-iron and reduce the overall rotor weight. For rotor mechanical integrity, a retaining sleeve is commonly used, leading to thicker magnetic airgap. Furthermore, when permeable rotor endcaps are applied, an increase of the magnetic end leakage occurs, i.e. end-effect. In this paper, the influence of the rotor endcaps on the mechanical and electromagnetic performance of a high-speed SPM machine is investigated through 3D-finite element analyses (FEA). Also, different endcap thickness and different rotor shaft materials are investigated and compared in this work. Finally, a prototype of the SPM machine under study has been manufactured and tested. The comparison between simulation and experimental results is presented and discussed. |
| first_indexed | 2025-11-14T20:15:45Z |
| format | Article |
| id | nottingham-50206 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:15:45Z |
| publishDate | 2018 |
| publisher | Institution of Engineering and Technology |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-502062018-09-12T14:18:51Z https://eprints.nottingham.ac.uk/50206/ Influence of rotor endcaps on the electromagnetic performance of high speed PM machine Al-Timimy, Ahmed Alani, Mahir Degano, Michele Giangrande, Paolo Galea, Michael Gerada, Christopher Surface-mounted permanent magnet (SPM) machines are preferred for high-speed aerospace applications over induction and switched reluctance machines, since they combine the advantages of high torque density and efficiency. Also, in aerospace applications, where low rotor weight and inertia are essential requirements, a permeable hollow shaft is proposed to replace the need for rotor back-iron and reduce the overall rotor weight. For rotor mechanical integrity, a retaining sleeve is commonly used, leading to thicker magnetic airgap. Furthermore, when permeable rotor endcaps are applied, an increase of the magnetic end leakage occurs, i.e. end-effect. In this paper, the influence of the rotor endcaps on the mechanical and electromagnetic performance of a high-speed SPM machine is investigated through 3D-finite element analyses (FEA). Also, different endcap thickness and different rotor shaft materials are investigated and compared in this work. Finally, a prototype of the SPM machine under study has been manufactured and tested. The comparison between simulation and experimental results is presented and discussed. Institution of Engineering and Technology 2018-09-30 Article PeerReviewed application/pdf en https://eprints.nottingham.ac.uk/50206/1/Influence%20of%20Rotor%20Endcaps%20on%20the%20Electromagnetic%20Performance%20of%20High%20Sp.._.pdf Al-Timimy, Ahmed, Alani, Mahir, Degano, Michele, Giangrande, Paolo, Galea, Michael and Gerada, Christopher (2018) Influence of rotor endcaps on the electromagnetic performance of high speed PM machine. IET Electric Power Applications, 12 (8). pp. 1142-1149. ISSN 1751-8679 http://digital-library.theiet.org/content/journals/10.1049/iet-epa.2017.0811 doi:10.1049/iet-epa.2017.0811 doi:10.1049/iet-epa.2017.0811 |
| spellingShingle | Al-Timimy, Ahmed Alani, Mahir Degano, Michele Giangrande, Paolo Galea, Michael Gerada, Christopher Influence of rotor endcaps on the electromagnetic performance of high speed PM machine |
| title | Influence of rotor endcaps on the electromagnetic performance of high speed PM machine |
| title_full | Influence of rotor endcaps on the electromagnetic performance of high speed PM machine |
| title_fullStr | Influence of rotor endcaps on the electromagnetic performance of high speed PM machine |
| title_full_unstemmed | Influence of rotor endcaps on the electromagnetic performance of high speed PM machine |
| title_short | Influence of rotor endcaps on the electromagnetic performance of high speed PM machine |
| title_sort | influence of rotor endcaps on the electromagnetic performance of high speed pm machine |
| url | https://eprints.nottingham.ac.uk/50206/ https://eprints.nottingham.ac.uk/50206/ https://eprints.nottingham.ac.uk/50206/ |