关键词: 潜水电机, 温度场, 等效热阻网络法, 有限体积法

Abstract:

Taking oil filled submersible motor for research object, the equivalent thermal resistance network model and 3D temperature field model was established. Loss and convective heat transfer coefficient were loaded into the model as constant value. By comparison, the finite volume method is more realistic to reflect temperature distribution than the equivalent thermal resistance network method. Based on the finite volume method, the influencing factors of temperature boundary conditions were analyzed. A new analysis method of temperature field of magnetic-thermal-flux for submersible motor was presented. The key of the method is to set up UDF(User Defined Function) with the change of copper loss, viscous loss, convective heat transfer coefficient on the surface of the casing and inlet temperature of the internal flow field. It is helpful to improve the accuracy of temperature calculation.

Key words: submersible motor, temperature field, equivalent thermal resistance network method, finite volume method