A Novel Air-Gap Profile of Single-Phase Permanent-Magnet Brushless DC Motor for Starting Torque Improvement and Cogging Torque Reduction

作者：Fazil Mohammed^*; Rajagopal K R

来源：IEEE Transactions on Magnetics, 2010, 46(11): 3928-3932.

DOI：10.1109/TMAG.2010.2057514

• Cogging torque
• finite-element analysis
• single-phase permanent-magnet brushless dc (PM BLDC) motor
• starting torque
• torque ripple reduction

We propose a new air-gap profile for single-phase permanent-magnet brushless dc (SP PM BLDC) motor to improve starting torque and to reduce cogging torque. We calculate starting torque and cogging torque using finite-element (FE) analysis. We perform a parametric analysis to study the effect of variation of proposed profile dimensions on cogging torque and starting torque. More than 70% improvement in starting torque and considerable reduction in magnitude of cogging torque is achieved compared to existing tapered air-gap profiles.

• 出版日期2010-11