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The Structure Optimization Design of Bearingless Switched Reluctance Motor for Flywheel Energy Storage

Huiqin Sun, Sifei Wang, Wanqing Zhang, Chengran Mei, Zheng Tian, Chunzhi Shi

Abstract


In order to optimize the torque performance of high-speed Bearingless Switched Reluctance Motor (BSRM) for flywheel energy storage and solve the problem of large torque ripple caused by the double salient motor structure, based on the mathematical model of torque and radial force, this paper proposes helical teeth structure that can reduce the torque ripple during commutation. Taking 12/8 pole double-winding BSRM as the research object, the solution formula for the slope range of stator pole helical teeth is derived. The torque change relationship of the motor is analyzed by finite element simulation, and the slope of the optimal result is 0.05. At this time, the torque ripple reduced by 32.5%, and the average torque increased by 26.7%, which provides a reliable method for optimizing the performance of the motor.


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References


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