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Design of a Magnetic-Geared Outer-Rotor Permanent-Magnet Brushless Motor for Electric Vehicles

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5 Author(s)
Chau, K.T. ; Dept. of Electr. & Electron. Eng., Hong Kong Univ. ; Dong Zhang ; Jiang, J.Z. ; Chunhua Liu
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This paper proposes a novel in-wheel motor, which artfully integrates a magnetic gear into a permanent-magnet brushless (PMBL) DC motor so that they can share a common PM rotor, hence offering both high efficiency and high power density. Moreover, the low-speed requirement for direct driving and the high-speed requirement for compact motor design can be achieved simultaneously. A 2-kW 600/4400-rpm magnetic-geared outer-rotor PMBL DC motor is designed and analyzed, which is particularly suitable for battery-powered electric motorcycles

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Magnetics, IEEE Transactions on  (Volume:43 ,  Issue: 6 )