H. Won, Yang-Ki Hong, Jonathan Platt, Minyeong Choi, Briana Bryant, Seungdeog Choi
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Six-phase Fractional-slot Concentrated Winding Ferrite Spoke-type Permanent Magnet Synchronous Motor for Electric Truck
This paper presents a novel stator-shifted six-phase fractional-slot concentrated winding ferrite spoke-type permanent magnet synchronous machine for an electric truck application. The proposed motor consists of a stator with dual three-phase windings that are 75 degrees apart and a rotor with a ferrite permanent magnet in spoke configuration. To further reduce the torque ripple, one circular void and notch are introduced on the stator and rotor, respectively. The simulation results show that the proposed motor exhibits 138% lower torque ripple, 108% lower back-EMF at 3000 rpm, and 95.5% higher maximum speed with a maximum torque of 2150 Nm and no demagnetization, compared to three-phase integrated-slot distributed winding NdFeB V-type PMSM of Prius 2010.
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