关键词: 内置式永磁电机, 断裂强度, 弹塑性分析, 塑性应变

Abstract: In order to solve the strength problem of high speed interior permanent motor, the elastic and elastic-plastic analysis of the rotor lamination strength of the interior permanent magnet motor was carried out by using the FEA method. The rotational speed of the rotor lamination in the elastic range and the rotational speed of fracture after entering the plastic deformation stage were mainly considered. According to the analysis results, the range of working speed of the motor rotor in elastic period, the speed at which the rotor breaks, and the collision speed of the stator and rotor had been determined. The analysis results have certain guiding significance for evaluating the safety of rotor operation.

Key words: interior permanent magnet motor, fracture strength, elastic-plastic analysis, plastic strain