A Study on the Axial Leakage Magnetic Flux in a Spoke Type Permanent Magnet Synchronous Motor
- Authors
- Lee, Sung Gu; Bae, Jaenam; Kim, Won-Ho
- Issue Date
- Sep-2018
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Axial leakage magnetic flux; Calibration coefficient; Spoke PMSM
- Citation
- 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018, pp.4262 - 4267
- Journal Title
- 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
- Start Page
- 4262
- End Page
- 4267
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/4415
- DOI
- 10.1109/ECCE.2018.8557509
- 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. © 2018 IEEE.
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