163 / 2023-10-19 23:03:03

Study on the Effect of Rotor Structure on Motor Performance of IPMSM

cogging torque,interior permanent magnet synchronous motor (IPMSM),Finite element simulation,symmetric auxiliary slot

7.Electric Machine Design and Control > (1)、Electric machine design

In order to reduce the cogging torque of IPMSM (Interior Permanent Magnet Synchronous Motor) symmetrical auxiliary slots are opened on the rotor surface. Firstly, the cogging torque is analyzed theoretically to find out the factors affecting the cogging torque of the motor. Conclusions are drawn from the finite element simulation analysis of the shape, position angle and radius of the auxiliary slot. Finally, the semi-circular auxiliary slot with position angle θ=38deg and radius r=0.3mm is used, and finally the waveforms of the cogging torque and no-load reverse potential of the motor are compared before and after cogging. The simulation results show that the reasonable auxiliary slot parameters can weaken the cogging torque by 56.93%, and the rationality of the scheme is also verified.