关键词: 异步电机, 开槽实心转子, 有限元法, 端部效应, 三维磁场, 电机性能

Abstract: The axial slotting on the rotor surface improves the starting performance of the solid rotor asynchronous motor.By studying the electromagnetic performance of the solid rotor asynchronous motor by three dimensional finite element method,the factors such as core saturation,end effect and axial distribution of the magnetic field can be fully considered.By comparing with the experimental data of the prototype, the correctness and accuracy of the 3D finite element simulation modeling was verified.Based on the three dimensional finite element model,the influence of the number and depth of rotor slots on the electromagnetic performance of solid rotor motor was obtained. It is shown that reasonable slotting can effectively improve the starting torque of the motor.The results of the study can provide a basis for the optimal design of such motors.

Key words: asynchronous motor, slotted solid rotor, finite element method, end effect, 3D magnetic field, motor performance