Research on the drive control of the Disk Coreless BLDC motor based on the soft switching inverter

In view of the problem of large torque ripple of the coreless disk BLDC motor, and considering the large switching loss under the operation of hard switching, it is proposed to add a resonant DC link to the front of the three-phase inverter, and analyze the resonant DC link Control the working process of the next switching cycle, and compare the electromagnetic torque before and after adding the resonant DC link through Simulink simulation analysis. The result shows that the electromagnetic torque ripple can be improved by adding resonant DC link to the conventional motor control, and the validity of this method is proved.