Comparative Study of Ferrofluid Cooling for Permanent Magnet Machines With Different Winding Structures
This paper investigates the influence of single- and double-layer winding structures on the thermal performances of fractional slot permanent magnet (PM) machines with ferrofluid cooling. Ferrofluid is an oil-based liquid with nano-sized ferromagnetic particles and has been injected into the end spa...
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10416856/ |
| _version_ | 1797321028989353984 |
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| author | Wei Zhang Guang-Jin Li Ying Qin |
| author_facet | Wei Zhang Guang-Jin Li Ying Qin |
| author_sort | Wei Zhang |
| collection | DOAJ |
| description | This paper investigates the influence of single- and double-layer winding structures on the thermal performances of fractional slot permanent magnet (PM) machines with ferrofluid cooling. Ferrofluid is an oil-based liquid with nano-sized ferromagnetic particles and has been injected into the end space of these machines. Owing to the magnetic body force produced by the end-winding leakage flux, the ferrofluid can circulate without the need for external pumps. This enables the establishment of an effective heat transfer path from the end-windings to the housing with water jacket. As a result, the ferrofluid improves the heat transfer rate and hence machine’s overall thermal performance. Multiphysics models accounting for the coupling between electromagnetic (EM) field, fluid dynamics and heat transfer have been built for the investigations. In addition to the dc field simulation as that carried out in literature, these multi-physics models can also simulate the effect of ac field in the end space. The findings indicate that ferrofluid cooling significantly improves the EM and thermal performances for the fractional slot PM machines. In addition, due to different magnetic fields in the end space produced by the single- and double-layer windings, they exhibit different cooling efficiencies. A motorette has been built to validate the simulations. |
| first_indexed | 2024-03-08T04:52:34Z |
| format | Article |
| id | doaj.art-61fd821b17fe4f2795855528512cbf49 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-03-08T04:52:34Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-61fd821b17fe4f2795855528512cbf492024-02-08T00:02:03ZengIEEEIEEE Access2169-35362024-01-0112180411805010.1109/ACCESS.2024.335990010416856Comparative Study of Ferrofluid Cooling for Permanent Magnet Machines With Different Winding StructuresWei Zhang0https://orcid.org/0000-0003-0118-7906Guang-Jin Li1https://orcid.org/0000-0002-5956-4033Ying Qin2Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield, U.K.Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield, U.K.Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield, U.K.This paper investigates the influence of single- and double-layer winding structures on the thermal performances of fractional slot permanent magnet (PM) machines with ferrofluid cooling. Ferrofluid is an oil-based liquid with nano-sized ferromagnetic particles and has been injected into the end space of these machines. Owing to the magnetic body force produced by the end-winding leakage flux, the ferrofluid can circulate without the need for external pumps. This enables the establishment of an effective heat transfer path from the end-windings to the housing with water jacket. As a result, the ferrofluid improves the heat transfer rate and hence machine’s overall thermal performance. Multiphysics models accounting for the coupling between electromagnetic (EM) field, fluid dynamics and heat transfer have been built for the investigations. In addition to the dc field simulation as that carried out in literature, these multi-physics models can also simulate the effect of ac field in the end space. The findings indicate that ferrofluid cooling significantly improves the EM and thermal performances for the fractional slot PM machines. In addition, due to different magnetic fields in the end space produced by the single- and double-layer windings, they exhibit different cooling efficiencies. A motorette has been built to validate the simulations.https://ieeexplore.ieee.org/document/10416856/Ferrofluid coolingmagnetic body forcesingle/double layer windingthermomagnetic effect |
| spellingShingle | Wei Zhang Guang-Jin Li Ying Qin Comparative Study of Ferrofluid Cooling for Permanent Magnet Machines With Different Winding Structures IEEE Access Ferrofluid cooling magnetic body force single/double layer winding thermomagnetic effect |
| title | Comparative Study of Ferrofluid Cooling for Permanent Magnet Machines With Different Winding Structures |
| title_full | Comparative Study of Ferrofluid Cooling for Permanent Magnet Machines With Different Winding Structures |
| title_fullStr | Comparative Study of Ferrofluid Cooling for Permanent Magnet Machines With Different Winding Structures |
| title_full_unstemmed | Comparative Study of Ferrofluid Cooling for Permanent Magnet Machines With Different Winding Structures |
| title_short | Comparative Study of Ferrofluid Cooling for Permanent Magnet Machines With Different Winding Structures |
| title_sort | comparative study of ferrofluid cooling for permanent magnet machines with different winding structures |
| topic | Ferrofluid cooling magnetic body force single/double layer winding thermomagnetic effect |
| url | https://ieeexplore.ieee.org/document/10416856/ |
| work_keys_str_mv | AT weizhang comparativestudyofferrofluidcoolingforpermanentmagnetmachineswithdifferentwindingstructures AT guangjinli comparativestudyofferrofluidcoolingforpermanentmagnetmachineswithdifferentwindingstructures AT yingqin comparativestudyofferrofluidcoolingforpermanentmagnetmachineswithdifferentwindingstructures |