Journal
WORLD ELECTRIC VEHICLE JOURNAL
Volume 12, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/wevj12040189
Keywords
asymmetrical permanent magnet configuration; interior permanent magnet (IPM); magnet axis shifted; permanent magnet (PM) machine
Funding
- National Natural Science Foundations of China [52077033, 52037002]
- Key R&D Program of Jiangsu Province [BE2021052]
- Fundamental Research Funds for the Central Universities [2242017K41003]
- Zhishan Youth Scholar Program of Southeast University
- Jiangsu Provincial Key Laboratory of Smart Grid Technology and Equipment, Southeast University [7716008046]
- Excellence Project Funds of Southeast University
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This paper proposes a novel interior permanent magnet (IPM) machine with asymmetrical PM configuration, which can achieve higher torque capability through magnet axis shifted (MAS) effect. The design parameters are optimized to improve torque capability and the effect of the PM asymmetry ratio on torque performance is evaluated.
This paper proposes a novel interior permanent magnet (IPM) machine with asymmetrical PM configuration. Different from the traditional IPM counterparts, the proposed machine can perform a magnet axis shifted (MAS) effect. The magnet axis is shifted towards the reluctance axis so that a higher resultant torque capability can be obtained. Firstly, the configuration and the basic principle of the proposed machine are described. The design parameters are optimized to improve the torque capability, and the effect of the PM asymmetry ratio on the torque performance is then evaluated in detail. In addition, the major electromagnetic characteristics of the optimized machine are investigated and compared with those of the Prius 2010 IPM machine by finite element method (FEM). The results demonstrate that the proposed asymmetrical PM configuration can achieve the torque improvement due to the MAS effect.
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