Design for Reliability: The Case of Fractional-Slot Surface Permanent-Magnet Machines
Surface permanent-magnet machines are widely used in different applications, from industrial automation to home appliance and electrical traction. Among any possible machine topology, the fractional-slot surface permanent-magnet one has gained increasing importance, because of its high torque densit...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-05-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/12/9/1691 |
| _version_ | 1798041440929972224 |
|---|---|
| author | Ambra Torreggiani Claudio Bianchini Matteo Davoli Alberto Bellini |
| author_facet | Ambra Torreggiani Claudio Bianchini Matteo Davoli Alberto Bellini |
| author_sort | Ambra Torreggiani |
| collection | DOAJ |
| description | Surface permanent-magnet machines are widely used in different applications, from industrial automation to home appliance and electrical traction. Among any possible machine topology, the fractional-slot surface permanent-magnet one has gained increasing importance, because of its high torque density, low cogging torque, extended flux weakening capability and high efficiency. In addition, fractional-slot machines are attractive for tooth concentrated windings, which allow some optimized manufacturing solutions such as modular stator tooth and high slot filling factor, which result in copper volume reduction; cost reduction, and lower stator parasitic resistances. The slot−pole combination is one of the most important design parameter and, as shown in this paper, it affects performances and the robustness of the machine with respect to the manufacturing imperfections. In the literature, slot−pole combinations are optimized at design phase by finite-element analysis relying on a healthy machine model. The original contribution of this paper is a design for reliability method that models manufacturing defects and includes them at design phase in the optimization process of slot−pole combinations. A method is presented that allows defining the optimal design parameters for maximum performances and robustness towards unavoidable imperfections caused by tolerances of the manufacturing process. |
| first_indexed | 2024-04-11T22:21:34Z |
| format | Article |
| id | doaj.art-1246439019fb444da98bdec482472d77 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T22:21:34Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-1246439019fb444da98bdec482472d772022-12-22T04:00:05ZengMDPI AGEnergies1996-10732019-05-01129169110.3390/en12091691en12091691Design for Reliability: The Case of Fractional-Slot Surface Permanent-Magnet MachinesAmbra Torreggiani0Claudio Bianchini1Matteo Davoli2Alberto Bellini3DISMI, University of Modena and Reggio Emilia, 42122 Reggio Emilia, ItalyDIEF, University of Modena and Reggio Emilia, 41125 Modena, ItalyRaw Power S.r.l., 42122 Reggio Emilia, ItalyDEI, University of Bologna, 47521 Cesena, ItalySurface permanent-magnet machines are widely used in different applications, from industrial automation to home appliance and electrical traction. Among any possible machine topology, the fractional-slot surface permanent-magnet one has gained increasing importance, because of its high torque density, low cogging torque, extended flux weakening capability and high efficiency. In addition, fractional-slot machines are attractive for tooth concentrated windings, which allow some optimized manufacturing solutions such as modular stator tooth and high slot filling factor, which result in copper volume reduction; cost reduction, and lower stator parasitic resistances. The slot−pole combination is one of the most important design parameter and, as shown in this paper, it affects performances and the robustness of the machine with respect to the manufacturing imperfections. In the literature, slot−pole combinations are optimized at design phase by finite-element analysis relying on a healthy machine model. The original contribution of this paper is a design for reliability method that models manufacturing defects and includes them at design phase in the optimization process of slot−pole combinations. A method is presented that allows defining the optimal design parameters for maximum performances and robustness towards unavoidable imperfections caused by tolerances of the manufacturing process.https://www.mdpi.com/1996-1073/12/9/1691surface permanent-magnet machineslot–pole combinationfractional-slotmanufacturing faults |
| spellingShingle | Ambra Torreggiani Claudio Bianchini Matteo Davoli Alberto Bellini Design for Reliability: The Case of Fractional-Slot Surface Permanent-Magnet Machines Energies surface permanent-magnet machine slot–pole combination fractional-slot manufacturing faults |
| title | Design for Reliability: The Case of Fractional-Slot Surface Permanent-Magnet Machines |
| title_full | Design for Reliability: The Case of Fractional-Slot Surface Permanent-Magnet Machines |
| title_fullStr | Design for Reliability: The Case of Fractional-Slot Surface Permanent-Magnet Machines |
| title_full_unstemmed | Design for Reliability: The Case of Fractional-Slot Surface Permanent-Magnet Machines |
| title_short | Design for Reliability: The Case of Fractional-Slot Surface Permanent-Magnet Machines |
| title_sort | design for reliability the case of fractional slot surface permanent magnet machines |
| topic | surface permanent-magnet machine slot–pole combination fractional-slot manufacturing faults |
| url | https://www.mdpi.com/1996-1073/12/9/1691 |
| work_keys_str_mv | AT ambratorreggiani designforreliabilitythecaseoffractionalslotsurfacepermanentmagnetmachines AT claudiobianchini designforreliabilitythecaseoffractionalslotsurfacepermanentmagnetmachines AT matteodavoli designforreliabilitythecaseoffractionalslotsurfacepermanentmagnetmachines AT albertobellini designforreliabilitythecaseoffractionalslotsurfacepermanentmagnetmachines |