Modeling and Analysis of Thermal-mechanical Stress in Motor Insulation

High temperature generates thermal-mechanical stress (TMS), which causes aging of the electrical insulation system in the stator windings. In this paper, a TMS analytical model for motor insulation is proposed, and the model is modified by using a shallow neural network. Then, the accuracy of the TMS analytical model was verified by finite element simulation, and finally verified by experiments. The average error obtained after comparison with the analytical model is less than 5%.