A study on the axial leakage magnetic flux in a spoke type permanent magnet synchronous motor
- Authors
- Lee, Sung Gu; Kim, Won-Ho
- Issue Date
- May-2017
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Axial leakage magnetic flux; Calibration coefficient; Spoke PMSM
- Citation
- 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017
- Journal Title
- 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/6674
- DOI
- 10.1109/IEMDC.2017.8002126
- ISSN
- 0000-0000
- Abstract
- A spoke type permanent magnet synchronous motor (Spoke PMSM) generates axial leakage magnetic flux due to its flux-concentrating rotor structure and therefore degrades motor performance. Although a three dimensional finite element method (3D-FEM) can be used to estimate the axial leakage magnetic flux, it requires a lot of analyzing time. In this study, a calibration coefficient is proposed to estimate the axial leakage magnetic flux using a two dimensional finite element method (2D-FEM) only instead of applying 3D-FEM. This calibration coefficient is expressed by the major geometric parameters of a motor and can be calculated using the material information of the permanent magnet and the bridge of rotor core in 2D-FEM. The validity of the proposed equation is verified by 3D-FEM and tests. © 2017 IEEE.
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