The forced air-cooling enclosed bus provides a solution for the transmission of large capacity energy. Consequently

we established a thermal analysis model of forced air-cooling enclosed bus based on the ANSYS simulation software

and calculated the temperature field of enclosed bus by the coupling analysis of electromagnetic field

airflow field and temperature field. By comparing the simulation results of various turbulence models with the measured temperature results of field enclosed bus

it is concluded that the simulation results based on Standard k-ε turbulence model have a good consistency and accuracy

and the error between the simulation results and the measured results is less than 3 ℃.The further simulation results show that the cooling effect of the two-side phase inlet system is better than that of the single middle inlet system. The bus length has a negligible effect on the temperature distribution. With the increase of the air flow

the temperature of the enclosed bus gradually decreases. The research will provide a reference for the design of enclosed bus size

the selection of forced air cooling type

and the power selection of the fan.