Finite Element Equivalent Heat Transfer Coefficient Solution for Transformer Windings Based on Asymptotic Homogenization Method
摘要
In order to reduce the complexity of calculating the temperature field of a transformer by finite elements analysis software, this paper establishes a method for predicting the winding heat transfer coefficient based on the asymptotic homogenization theory, writes a solution code by matlab, and calculates the equivalent heat transfer coefficient of the winding with temperature. The winding model is simplified by this coefficient, and the temperature field simulation is carried out for the original complex model and the simplified model. The simulation results of the simplified model match with the simulation results of the complex model, which proves that the method can be used for transformer winding finite element model simplification.