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Paper presents technique to reduce cogging torque of two standard rating motors by magnet segmentation technique. Initially permanent magnet BLDC motor is designed without magnet segmentation and then after magnet segmentations is varied from 1 to 4 segments. Cogging torque profile is obtained using finite element(FE) method. Peak to peak cogging torque is reduced from 0.574 N.mto 0.155 (i.e. 72.9...
Radial flux PMBLDC motors are designed using CAD program. CAD program gives dimensions and performance of the motor and compared with finite element analysis result to validate the design. Radial flux PMBLDC motor having only one major disadvantage that is cogging torque. Cogging torque cause due to interaction between magnet and stator teeth that lead to noise and vibration in motor. In this paper...
Torque ripple is undesirable component for smooth operation of permanent magnet motors. Cogging torque is prime creator of torque ripple, which creates noise and vibrations. Torque ripple can be lessened by minimizing cogging torque. By proper design improvement in permanent magnet motor, cogging torque can be reduced. This paper presents design technique to reduce cogging torque of two standard rating...
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