Performance Comparison of Conventional Synchronous Reluctance Machines and PM-Assisted Types with Combined Star–Delta Winding
This paper compares four prototype Synchronous Reluctance Motors (SynRMs) having an identical geometry of iron lamination stacks in the stator and rotor. Two different stator winding layouts are employed: a conventional three-phase star connection and a combined star–delta winding. In addition, two...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-09-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/10/10/1500 |
| _version_ | 1798040903005241344 |
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| author | Mohamed Nabil Fathy Ibrahim Essam Rashad Peter Sergeant |
| author_facet | Mohamed Nabil Fathy Ibrahim Essam Rashad Peter Sergeant |
| author_sort | Mohamed Nabil Fathy Ibrahim |
| collection | DOAJ |
| description | This paper compares four prototype Synchronous Reluctance Motors (SynRMs) having an identical geometry of iron lamination stacks in the stator and rotor. Two different stator winding layouts are employed: a conventional three-phase star connection and a combined star–delta winding. In addition, two rotors are considered: a conventional rotor without magnets and a rotor with ferrite magnets. The performance of the four SynRMs is evaluated using a two-dimensional (2D) Finite Element Model (FEM). For the same copper volume and current, the combined star–delta-connected stator with Permanent Magnets (PMs) in the rotor corresponds to an approximately 22% increase in the output torque at rated current and speed compared to the conventional machine. This improvement is mainly thanks to adding ferrite PMs in the rotor as well as to the improved winding factor of the combined star–delta winding. The torque gain increases up to 150% for low current. Moreover, the rated efficiency is 93.60% compared to 92.10% for the conventional machine. On the other hand, the impact on the power factor and losses of SynRM when using the star–delta windings instead of the star windings is merely negligible. The theoretical results are experimentally validated using four identical prototype machines with identical lamination stacks but different rotors and winding layouts. |
| first_indexed | 2024-04-11T22:14:05Z |
| format | Article |
| id | doaj.art-e8cf0101bac84b848e50297d33fb5410 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T22:14:05Z |
| publishDate | 2017-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-e8cf0101bac84b848e50297d33fb54102022-12-22T04:00:29ZengMDPI AGEnergies1996-10732017-09-011010150010.3390/en10101500en10101500Performance Comparison of Conventional Synchronous Reluctance Machines and PM-Assisted Types with Combined Star–Delta WindingMohamed Nabil Fathy Ibrahim0Essam Rashad1Peter Sergeant2Department of Electrical Energy, Metals, Mechanical Constructions and Systems, Ghent University, 9000 Ghent, BelgiumElectrical Power and Machines Department, Tanta University, Tanta 31527, EgyptDepartment of Electrical Energy, Metals, Mechanical Constructions and Systems, Ghent University, 9000 Ghent, BelgiumThis paper compares four prototype Synchronous Reluctance Motors (SynRMs) having an identical geometry of iron lamination stacks in the stator and rotor. Two different stator winding layouts are employed: a conventional three-phase star connection and a combined star–delta winding. In addition, two rotors are considered: a conventional rotor without magnets and a rotor with ferrite magnets. The performance of the four SynRMs is evaluated using a two-dimensional (2D) Finite Element Model (FEM). For the same copper volume and current, the combined star–delta-connected stator with Permanent Magnets (PMs) in the rotor corresponds to an approximately 22% increase in the output torque at rated current and speed compared to the conventional machine. This improvement is mainly thanks to adding ferrite PMs in the rotor as well as to the improved winding factor of the combined star–delta winding. The torque gain increases up to 150% for low current. Moreover, the rated efficiency is 93.60% compared to 92.10% for the conventional machine. On the other hand, the impact on the power factor and losses of SynRM when using the star–delta windings instead of the star windings is merely negligible. The theoretical results are experimentally validated using four identical prototype machines with identical lamination stacks but different rotors and winding layouts.https://www.mdpi.com/1996-1073/10/10/1500combined star–delta windingdesignFEMPM-assistedsynchronous reluctance motor (SynRM) |
| spellingShingle | Mohamed Nabil Fathy Ibrahim Essam Rashad Peter Sergeant Performance Comparison of Conventional Synchronous Reluctance Machines and PM-Assisted Types with Combined Star–Delta Winding Energies combined star–delta winding design FEM PM-assisted synchronous reluctance motor (SynRM) |
| title | Performance Comparison of Conventional Synchronous Reluctance Machines and PM-Assisted Types with Combined Star–Delta Winding |
| title_full | Performance Comparison of Conventional Synchronous Reluctance Machines and PM-Assisted Types with Combined Star–Delta Winding |
| title_fullStr | Performance Comparison of Conventional Synchronous Reluctance Machines and PM-Assisted Types with Combined Star–Delta Winding |
| title_full_unstemmed | Performance Comparison of Conventional Synchronous Reluctance Machines and PM-Assisted Types with Combined Star–Delta Winding |
| title_short | Performance Comparison of Conventional Synchronous Reluctance Machines and PM-Assisted Types with Combined Star–Delta Winding |
| title_sort | performance comparison of conventional synchronous reluctance machines and pm assisted types with combined star delta winding |
| topic | combined star–delta winding design FEM PM-assisted synchronous reluctance motor (SynRM) |
| url | https://www.mdpi.com/1996-1073/10/10/1500 |
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