Design of a High-Efficiency External Rotor Interior Permanent Magnet Synchronous Motor Without Magnetic Leakage Flux Path
This paper proposes a high-efficiency design for an external rotor interior permanent magnet synchronous motor (IPMSM) that eliminates the magnetic leakage flux path. The conventional model based on an external rotor surface-mounted permanent magnet synchronous motor (SPMSM) is analyzed using a stat...
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| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Mathematics |
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| author | Kyoung-Soo Cha Jae-Hyun Kim Soo-Gyung Lee Min-Ro Park |
| author_facet | Kyoung-Soo Cha Jae-Hyun Kim Soo-Gyung Lee Min-Ro Park |
| author_sort | Kyoung-Soo Cha |
| collection | DOAJ |
| description | This paper proposes a high-efficiency design for an external rotor interior permanent magnet synchronous motor (IPMSM) that eliminates the magnetic leakage flux path. The conventional model based on an external rotor surface-mounted permanent magnet synchronous motor (SPMSM) is analyzed using a statistical method. Design directions are derived by comparing efficiencies at two major operating points with different motor characteristics. A V-shaped IPMSM is then proposed to increase the permanent magnet volume and reduce magnetic leakage. Design optimization is conducted using Gaussian process models (GPMs) constructed with a Latin hypercube design (LHD), and the optimal design is determined using a gradient descent algorithm. A prototype is fabricated to confirm manufacturability, and the improved efficiency of the proposed design is experimentally verified. The results demonstrate that the proposed IPMSM significantly outperforms the conventional SPMSM in terms of efficiency across both operating points. |
| format | Article |
| id | doaj-art-83532ebbfe5b497a9eb7bec0e2c3fccf |
| institution | Kabale University |
| issn | 2227-7390 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Mathematics |
| spelling | doaj-art-83532ebbfe5b497a9eb7bec0e2c3fccf2025-08-20T03:46:49ZengMDPI AGMathematics2227-73902025-06-011311186510.3390/math13111865Design of a High-Efficiency External Rotor Interior Permanent Magnet Synchronous Motor Without Magnetic Leakage Flux PathKyoung-Soo Cha0Jae-Hyun Kim1Soo-Gyung Lee2Min-Ro Park3Advanced Mobility System Group, Korea Institute of Industrial Technology, Daegu 42994, Republic of KoreaSchool of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaGlobal R&D Center, POSCO, Incheon 21985, Republic of KoreaDepartment of Electrical Engineering, Soonchunhyang University, Asan 31538, Republic of KoreaThis paper proposes a high-efficiency design for an external rotor interior permanent magnet synchronous motor (IPMSM) that eliminates the magnetic leakage flux path. The conventional model based on an external rotor surface-mounted permanent magnet synchronous motor (SPMSM) is analyzed using a statistical method. Design directions are derived by comparing efficiencies at two major operating points with different motor characteristics. A V-shaped IPMSM is then proposed to increase the permanent magnet volume and reduce magnetic leakage. Design optimization is conducted using Gaussian process models (GPMs) constructed with a Latin hypercube design (LHD), and the optimal design is determined using a gradient descent algorithm. A prototype is fabricated to confirm manufacturability, and the improved efficiency of the proposed design is experimentally verified. The results demonstrate that the proposed IPMSM significantly outperforms the conventional SPMSM in terms of efficiency across both operating points.https://www.mdpi.com/2227-7390/13/11/1865design optimizationefficiencyexternal rotor permanent magnet synchronous motorgaussian process modelV-shaped rotor type |
| spellingShingle | Kyoung-Soo Cha Jae-Hyun Kim Soo-Gyung Lee Min-Ro Park Design of a High-Efficiency External Rotor Interior Permanent Magnet Synchronous Motor Without Magnetic Leakage Flux Path Mathematics design optimization efficiency external rotor permanent magnet synchronous motor gaussian process model V-shaped rotor type |
| title | Design of a High-Efficiency External Rotor Interior Permanent Magnet Synchronous Motor Without Magnetic Leakage Flux Path |
| title_full | Design of a High-Efficiency External Rotor Interior Permanent Magnet Synchronous Motor Without Magnetic Leakage Flux Path |
| title_fullStr | Design of a High-Efficiency External Rotor Interior Permanent Magnet Synchronous Motor Without Magnetic Leakage Flux Path |
| title_full_unstemmed | Design of a High-Efficiency External Rotor Interior Permanent Magnet Synchronous Motor Without Magnetic Leakage Flux Path |
| title_short | Design of a High-Efficiency External Rotor Interior Permanent Magnet Synchronous Motor Without Magnetic Leakage Flux Path |
| title_sort | design of a high efficiency external rotor interior permanent magnet synchronous motor without magnetic leakage flux path |
| topic | design optimization efficiency external rotor permanent magnet synchronous motor gaussian process model V-shaped rotor type |
| url | https://www.mdpi.com/2227-7390/13/11/1865 |
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