期刊
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
卷 26, 期 4, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2016.2543267
关键词
Axial force; finite-element analysis; permanent magnet; skew
资金
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) [20134010200550, 20142010102970]
- Ministry of Trade, Industry and Energy, South Korea
- Korea Evaluation Institute of Industrial Technology (KEIT) [20142010102970, 20134010200550] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Skew is a common method to reduce torque ripple and cogging torque. However, when skew is applied, unexpected axial force is produced. To reduce axial force, V-skew is used as one of the solutions. Specifically, when V-skew is applied, the magnetic flux distribution changes according to the rotating direction, which causes a difference in the performance. For the application in which the motor rotates in one direction, this phenomenon can be used to produce power with better quality torque and less losses. In this paper, the interior permanent-magnet synchronous motor (IPMSM) is designed by applying a V-skew to the stator, taking into consideration the manufacturing difficulties with applying a rotor skew to the IPMSM. The skew effect and the reduction of axial force are verified based on finite-element analysis. Moreover, torque, axial force, and losses are comparatively analyzed according to the rotating direction. All calculations and analysis are conducted based on 2-D and 3-D finite-element analysis.
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