Research Institute of Car and Life-style, DAIHATSU MOTOR CO., LTD.
Department of Environment and Energy Systems,
Shizuoka University, Graduate School of Science and Technology
Axial-flux permanent-magnet synchronous motors with large D/L ratio and high pole-pairs are expected to be applied to in-wheel traction motor drives because of their high torque density.
This paper introduces a double-sided axial-flux permanent-magnet synchronous motor with a three-phase fractional-slot winding system in an 18-slot/20-pole configuration with reduced torque ripple for electric transport vehicles-designed using JMAG-as well as a comparison of efficiency maps with the actual machine.
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