A Study on Reduction of Cogging Torque and Magnet Usage through Intersect Magnet Consequent Pole Structure
Owing to the shortage of rare-earth magnetic materials, various methods are being examined to reduce the use of magnets. One of these is a consequent pole. The consequent pole model can reduce the use of magnets by 50% using only one pole of the magnet and replacing the other pole with iron. However...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/23/9255 |
| _version_ | 1827643094941564928 |
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| author | Si-Woo Song Min-Ki Hong Ju Lee Won-Ho Kim |
| author_facet | Si-Woo Song Min-Ki Hong Ju Lee Won-Ho Kim |
| author_sort | Si-Woo Song |
| collection | DOAJ |
| description | Owing to the shortage of rare-earth magnetic materials, various methods are being examined to reduce the use of magnets. One of these is a consequent pole. The consequent pole model can reduce the use of magnets by 50% using only one pole of the magnet and replacing the other pole with iron. However, the consequent pole has the disadvantage of generating back EMF asymmetry and a high cogging torque. In this study, an intersect magnet consequent pole structure is proposed to overcome the disadvantages of the existing consequent pole. Two methods have been proposed to improve axial leakage magnetic flux caused by the intersect magnet consequent pole structure. Finally, we propose a method to reduce the cogging torque and minimize the use of magnets with the same performance standard. For motor design, two-dimensional and three-dimensional finite element analysis was used, and comparative analysis was performed via simulations for several models. The existing model and the final model were compared and verified. |
| first_indexed | 2024-03-09T17:47:45Z |
| format | Article |
| id | doaj.art-b898c9d476f94469ba2feb6ec194b382 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T17:47:45Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b898c9d476f94469ba2feb6ec194b3822023-11-24T10:57:50ZengMDPI AGEnergies1996-10732022-12-011523925510.3390/en15239255A Study on Reduction of Cogging Torque and Magnet Usage through Intersect Magnet Consequent Pole StructureSi-Woo Song0Min-Ki Hong1Ju Lee2Won-Ho Kim3Department of Electrical Engineering, Hanyang University, Seoul 133-791, Republic of KoreaDepartment of Electrical Engineering, Gachon University, Seongnam 461-701, Republic of KoreaDepartment of Electrical Engineering, Hanyang University, Seoul 133-791, Republic of KoreaDepartment of Electrical Engineering, Gachon University, Seongnam 461-701, Republic of KoreaOwing to the shortage of rare-earth magnetic materials, various methods are being examined to reduce the use of magnets. One of these is a consequent pole. The consequent pole model can reduce the use of magnets by 50% using only one pole of the magnet and replacing the other pole with iron. However, the consequent pole has the disadvantage of generating back EMF asymmetry and a high cogging torque. In this study, an intersect magnet consequent pole structure is proposed to overcome the disadvantages of the existing consequent pole. Two methods have been proposed to improve axial leakage magnetic flux caused by the intersect magnet consequent pole structure. Finally, we propose a method to reduce the cogging torque and minimize the use of magnets with the same performance standard. For motor design, two-dimensional and three-dimensional finite element analysis was used, and comparative analysis was performed via simulations for several models. The existing model and the final model were compared and verified.https://www.mdpi.com/1996-1073/15/23/9255cogging torquemagnet reductionconsequent polecogging torque reductionmotorPMSM |
| spellingShingle | Si-Woo Song Min-Ki Hong Ju Lee Won-Ho Kim A Study on Reduction of Cogging Torque and Magnet Usage through Intersect Magnet Consequent Pole Structure Energies cogging torque magnet reduction consequent pole cogging torque reduction motor PMSM |
| title | A Study on Reduction of Cogging Torque and Magnet Usage through Intersect Magnet Consequent Pole Structure |
| title_full | A Study on Reduction of Cogging Torque and Magnet Usage through Intersect Magnet Consequent Pole Structure |
| title_fullStr | A Study on Reduction of Cogging Torque and Magnet Usage through Intersect Magnet Consequent Pole Structure |
| title_full_unstemmed | A Study on Reduction of Cogging Torque and Magnet Usage through Intersect Magnet Consequent Pole Structure |
| title_short | A Study on Reduction of Cogging Torque and Magnet Usage through Intersect Magnet Consequent Pole Structure |
| title_sort | study on reduction of cogging torque and magnet usage through intersect magnet consequent pole structure |
| topic | cogging torque magnet reduction consequent pole cogging torque reduction motor PMSM |
| url | https://www.mdpi.com/1996-1073/15/23/9255 |
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