Effect of Auxiliary Groove on Cogging Torque of Double V Type IPMSM

The problem of large cog torque of double V type built-in permanent magnet synchronous motor (IPMSM). Firstly, according to the generation principle of cog torque, a 10-pole and 60-slot double V permanent magnet synchronous motor model was established by means of ANSYS Maxwell finite element simulation software. Secondly, the feasibility of opening symmetrical auxiliary grooves on stator and rotor was discussed. Bivariate parameterization used to analyze the influence of stator and rotor auxiliary slot position was n and radius on the cog torque. Finally, the performance of the motor before and after grooving is compared and analyzed. The simulation results show that the reasonable setting of stator and rotor auxiliary grooves can effectively weaken the cogging torque and ensure the other performance of the motor is basically unchanged.