This paper simulates and experimentally studies the temperature distribution of the steam turbine generator stator under air cooling and evaporative cooling conditions. In terms of simulation, the numerical analysis method of the simulation is studied, a three-dimensional heat conduction model is established, and the calculation and setting of boundary conditions in the temperature field calculation process are analyzed and discussed. The temperature field simulation calculations are carried out on stator specimens with three different insulation structures under different working conditions. Under air cooling conditions, a three-dimensional temperature field simulation is carried out, and multiple groups of curves are obtained. The temperature distribution of the stator core and the winding insulation surface under different current densities, different insulation structures, and different wind speeds is obtained. Under evaporative cooling conditions, a two-dimensional temperature field simulation calculation is carried out on the stator, and The influence of different liquid level heights of cooling medium F-113 on stator temperature distribution was analyzed. In terms of experiments, a stainless steel sleeve model was established. Under air cooling conditions, the temperature rise data of the stator surface at different wind speeds were measured, and the influence of wind speed, insulation thickness, and current density on the stator temperature field was analyzed. Under evaporative cooling conditions, the temperature distribution of the stator was measured and compared with the air cooling data. It can be seen that under high current density conditions, the cooling effect of evaporative cooling technology has obvious advantages. Through the research of this article, the temperature distribution of the stator under the two cooling methods of air cooling and evaporative cooling is more directly understood. In engineering applications, it can be used as a reference for selecting motor cooling methods.
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