异步电动机转子感应钎焊多物理场耦合仿真与试验研究

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Abstract： Induction brazing is a key process in the manufacturing of squirrel-cage rotor; however，the complex multi-physical field interactions involved stillack a clear quantitativeunderstanding.Toaddressthis gap，this work establishes a multi-physics mathematical framework coupling electromagnetic and thermal fields to systematically investigate the dynamic evolution of the temperature field during the induction brazing proces. Furthermore，an equivalent heat source model incorporating the skin effect is developed to enhance computational efficiency while maintaining accuracy. Numerical results demonstrate that the equivalent heat source model exhibits excellent agrement with the fullcoupled model in predicting temperature field uniformity，with a peak temperature deviation of merely 3.5% .The accuracy of the simulation results was validated through real-time infrared temperaturemonitoring.

Keywords： induction brazing; rotor; multi-physical field; equivalent heat source; temperature field

1序言

异步电动机因其结构坚固、运行安全且维护要求低，被广泛应用于轨道交通牵引系统中[1]。（剩余5984字）