Solid Core Magnetic Gear Systems: A Comprehensive Review of Topologies, Core Materials, and Emerging Applications
Magnetic gears (MGs) are attracting increasing attention in power transmission systems due to their contactless operation principles, low frictional losses, and high efficiency. However, the broad application potential of these technologies requires a comprehensive evaluation of engineering paramete...
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MDPI AG
2025-08-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/15/15/8560 |
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| author | Serkan Sezen Kadir Yilmaz Serkan Aktas Murat Ayaz Taner Dindar |
| author_facet | Serkan Sezen Kadir Yilmaz Serkan Aktas Murat Ayaz Taner Dindar |
| author_sort | Serkan Sezen |
| collection | DOAJ |
| description | Magnetic gears (MGs) are attracting increasing attention in power transmission systems due to their contactless operation principles, low frictional losses, and high efficiency. However, the broad application potential of these technologies requires a comprehensive evaluation of engineering parameters, such as material selection, energy efficiency, and structural design. This review focuses solely on solid-core magnetic gear systems designed using laminated electrical steels, soft magnetic composites (SMCs), and high-saturation alloys. This review systematically examines the topological diversity, torque transmission principles, and the impact of various core materials, such as electrical steels, soft magnetic composites (SMCs), and cobalt-based alloys, on the performance of magnetic gear systems. Literature-based comparative analyses are structured around topological classifications, evaluation of material properties, and performance analyses based on losses. Additionally, the study highlights that aligning material properties with appropriate manufacturing methods, such as powder metallurgy, wire electrical discharge machining (EDM), and precision casting, is essential for the practical scalability of magnetic gear systems. The findings reveal that coaxial magnetic gears (CMGs) offer a favorable balance between high torque density and compactness, while soft magnetic composites provide significant advantages in loss reduction, particularly at high frequencies. Additionally, application trends in fields such as renewable energy, electric vehicles (EVs), aerospace, and robotics are highlighted. |
| format | Article |
| id | doaj-art-2b8d05eae76944f08fe66898f40a89dc |
| institution | DOAJ |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-2b8d05eae76944f08fe66898f40a89dc2025-08-20T03:02:55ZengMDPI AGApplied Sciences2076-34172025-08-011515856010.3390/app15158560Solid Core Magnetic Gear Systems: A Comprehensive Review of Topologies, Core Materials, and Emerging ApplicationsSerkan Sezen0Kadir Yilmaz1Serkan Aktas2Murat Ayaz3Taner Dindar4Department of Electric and Energy, Kocaeli University, Kocaeli 41001, TurkeyDepartment of Energy Systems Engineering, Kocaeli University, Kocaeli 41001, TurkeyDepartment of Machinery and Metal Technologies, Kocaeli University, Kocaeli 41001, TurkeyDepartment of Electric and Energy, Kocaeli University, Kocaeli 41001, TurkeyDepartment of Electronics and Automation, Ankara University, Ankara 06920, TurkeyMagnetic gears (MGs) are attracting increasing attention in power transmission systems due to their contactless operation principles, low frictional losses, and high efficiency. However, the broad application potential of these technologies requires a comprehensive evaluation of engineering parameters, such as material selection, energy efficiency, and structural design. This review focuses solely on solid-core magnetic gear systems designed using laminated electrical steels, soft magnetic composites (SMCs), and high-saturation alloys. This review systematically examines the topological diversity, torque transmission principles, and the impact of various core materials, such as electrical steels, soft magnetic composites (SMCs), and cobalt-based alloys, on the performance of magnetic gear systems. Literature-based comparative analyses are structured around topological classifications, evaluation of material properties, and performance analyses based on losses. Additionally, the study highlights that aligning material properties with appropriate manufacturing methods, such as powder metallurgy, wire electrical discharge machining (EDM), and precision casting, is essential for the practical scalability of magnetic gear systems. The findings reveal that coaxial magnetic gears (CMGs) offer a favorable balance between high torque density and compactness, while soft magnetic composites provide significant advantages in loss reduction, particularly at high frequencies. Additionally, application trends in fields such as renewable energy, electric vehicles (EVs), aerospace, and robotics are highlighted.https://www.mdpi.com/2076-3417/15/15/8560magnetic gearstorque densitymagnetic materialstopological structuresflux modulationmanufacturability |
| spellingShingle | Serkan Sezen Kadir Yilmaz Serkan Aktas Murat Ayaz Taner Dindar Solid Core Magnetic Gear Systems: A Comprehensive Review of Topologies, Core Materials, and Emerging Applications Applied Sciences magnetic gears torque density magnetic materials topological structures flux modulation manufacturability |
| title | Solid Core Magnetic Gear Systems: A Comprehensive Review of Topologies, Core Materials, and Emerging Applications |
| title_full | Solid Core Magnetic Gear Systems: A Comprehensive Review of Topologies, Core Materials, and Emerging Applications |
| title_fullStr | Solid Core Magnetic Gear Systems: A Comprehensive Review of Topologies, Core Materials, and Emerging Applications |
| title_full_unstemmed | Solid Core Magnetic Gear Systems: A Comprehensive Review of Topologies, Core Materials, and Emerging Applications |
| title_short | Solid Core Magnetic Gear Systems: A Comprehensive Review of Topologies, Core Materials, and Emerging Applications |
| title_sort | solid core magnetic gear systems a comprehensive review of topologies core materials and emerging applications |
| topic | magnetic gears torque density magnetic materials topological structures flux modulation manufacturability |
| url | https://www.mdpi.com/2076-3417/15/15/8560 |
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