Cogging torque reduction of axial flux permanent magnet brushless DC motors for electric vehicle applications with magnet segmentation technique

Authors : Amit Patel

Pages : 977-983

Doi:10.5505/pajes.2025.67523

View : 49 | Download : 95

Publication Date : 2025-11-13

Article Type : Research Paper

Abstract :Axial flux permanent magnet brushless DC motors have many attractive features along with major disadvantage of high cogging torque. Cogging torque reduction is one of the main challenges in permanent magnet motor design specifically for electric vehicle application. This article presents the magnet segmentation approach to reduce cogging torque of axial flux permanent magnet brushless motors for electric vehicle application. To accomplish this, each permanent magnet mounted on rotor core surface is separated into two identical sections. This work also considered the influence of segmentation on average torque, flux density profile, and back emf profile. Three-dimensional finite element analysis has been performed for simulation and analysis of 250 W, 150 rpm axial flux permanent magnet brushless DC motor. It is observed that the suggested approach effectively reduces cogging torque.
Keywords : Cogging torku, PM motor, Tasarım, FEA, Kalıcı mıknatıs

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