Improvement in Torque Density by Ferrofluid Injection into Magnet Tolerance of Interior Permanent Magnet Synchronous Motor
In an interior permanent magnet synchronous motor, an adhesive such as bond is generally injected into the magnet tolerance to prevent vibration of the permanent magnet within the insertion space. In this case, a disadvantage is that the magnet tolerance does not contribute to the performance. In th...
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MDPI AG
2021-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/6/1736 |
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| author | In-Jun Yang Si-Woo Song Dong-Ho Kim Kwang-Soo Kim Won-Ho Kim |
| author_facet | In-Jun Yang Si-Woo Song Dong-Ho Kim Kwang-Soo Kim Won-Ho Kim |
| author_sort | In-Jun Yang |
| collection | DOAJ |
| description | In an interior permanent magnet synchronous motor, an adhesive such as bond is generally injected into the magnet tolerance to prevent vibration of the permanent magnet within the insertion space. In this case, a disadvantage is that the magnet tolerance does not contribute to the performance. In this paper, ferrofluid is inserted to improve the torque density, utilizing the magnet tolerance. When inserting ferrofluid into the magnet tolerance, it is important to fix the magnet because conventional adhesives are not used, and it is important that the ferrofluid does not act as a leakage path within the insertion space. In this study, a new rotor configuration using a plastic barrier that satisfies these considerations was introduced. The analysis was conducted through finite element analysis (FEA), and this technique was verified by comparing the simulation results and the experimental results through a dynamo test. It was confirmed that the no-load back electromotive force in the final model increased through ferrofluid injection. |
| first_indexed | 2024-03-10T13:03:16Z |
| format | Article |
| id | doaj.art-cbcbfae0cebf40c5af073cd5b4ff08f8 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T13:03:16Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-cbcbfae0cebf40c5af073cd5b4ff08f82023-11-21T11:22:32ZengMDPI AGEnergies1996-10732021-03-01146173610.3390/en14061736Improvement in Torque Density by Ferrofluid Injection into Magnet Tolerance of Interior Permanent Magnet Synchronous MotorIn-Jun Yang0Si-Woo Song1Dong-Ho Kim2Kwang-Soo Kim3Won-Ho Kim4Department of Electrical Engineering, Hanyang University, Seoul 04763, KoreaDepartment of Electrical Engineering, Hanyang University, Seoul 04763, KoreaDepartment of Electrical Engineering, Hanyang University, Seoul 04763, KoreaDepartment of Mechatronics Engineering, Halla University, Wonju 26404, KoreaDepartment of Electrical Engineering, Gachon University, Seongnam 13120, KoreaIn an interior permanent magnet synchronous motor, an adhesive such as bond is generally injected into the magnet tolerance to prevent vibration of the permanent magnet within the insertion space. In this case, a disadvantage is that the magnet tolerance does not contribute to the performance. In this paper, ferrofluid is inserted to improve the torque density, utilizing the magnet tolerance. When inserting ferrofluid into the magnet tolerance, it is important to fix the magnet because conventional adhesives are not used, and it is important that the ferrofluid does not act as a leakage path within the insertion space. In this study, a new rotor configuration using a plastic barrier that satisfies these considerations was introduced. The analysis was conducted through finite element analysis (FEA), and this technique was verified by comparing the simulation results and the experimental results through a dynamo test. It was confirmed that the no-load back electromotive force in the final model increased through ferrofluid injection.https://www.mdpi.com/1996-1073/14/6/1736permanent magnet (PM) motorinterior permanent magnet synchronous motor (IPMSM)ferrofluidtorque densitymagnet tolerance |
| spellingShingle | In-Jun Yang Si-Woo Song Dong-Ho Kim Kwang-Soo Kim Won-Ho Kim Improvement in Torque Density by Ferrofluid Injection into Magnet Tolerance of Interior Permanent Magnet Synchronous Motor Energies permanent magnet (PM) motor interior permanent magnet synchronous motor (IPMSM) ferrofluid torque density magnet tolerance |
| title | Improvement in Torque Density by Ferrofluid Injection into Magnet Tolerance of Interior Permanent Magnet Synchronous Motor |
| title_full | Improvement in Torque Density by Ferrofluid Injection into Magnet Tolerance of Interior Permanent Magnet Synchronous Motor |
| title_fullStr | Improvement in Torque Density by Ferrofluid Injection into Magnet Tolerance of Interior Permanent Magnet Synchronous Motor |
| title_full_unstemmed | Improvement in Torque Density by Ferrofluid Injection into Magnet Tolerance of Interior Permanent Magnet Synchronous Motor |
| title_short | Improvement in Torque Density by Ferrofluid Injection into Magnet Tolerance of Interior Permanent Magnet Synchronous Motor |
| title_sort | improvement in torque density by ferrofluid injection into magnet tolerance of interior permanent magnet synchronous motor |
| topic | permanent magnet (PM) motor interior permanent magnet synchronous motor (IPMSM) ferrofluid torque density magnet tolerance |
| url | https://www.mdpi.com/1996-1073/14/6/1736 |
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