Research on the Calculation of Thermal Resistances of Thermal-liquid Coupled Network Model of Huge Hydro-generator's Stator

摘要

To identify the thermal-resistances of thermalliquid coupled network model of huge hydro-generator's stator, this paper presents a LS(Least-Squares) method. The thermalresistances identified by the LS method, calculated by the traditional thermal-circuit method and by FEM are substituted into the thermal-liquid coupled network model of the whole stator respectively, and 3 models are gotten. The comparing the calculation results of temperature distribution of the 3 models with the real running data shows that the LS method of parameter identification of thermal-resistance is a available way.