关键词: 双定子单转子, 能量法, 齿槽转矩, 双定子错位

Abstract: The cogging torque in the double stator single rotor axial flux permanent magnet machine has an adverse effect on the vibration and noise of the machine, and also affects the control accuracy of the system. To weaken the cogging torque,a double stator dislocation structure was proposed. Without changing the structure of the stator and rotor, the two originally opposed stator discs were misaligned by a certain angle, so that the cogging torque generated by the two stator discs could offset each other, thereby weakening the cogging torque. The energy method was used to analyze the cogging torque after the two stator discs were misaligned, the mathematical expression between the misalignment angle and the cogging torque was deduced, and the correctness of the analysis was verified by the finite element method. The conclusion shows that the cogging torque and torque ripple of the machine can be significantly weakened by dislocation.

Key words: double stator single rotor, energy method, cogging torque, double stator dislocation