Steady-state thermal simulation of the stator coil of the evaporative inner cooling system in wind turbines

The new type of evaporative inner cooling system used in the stator of wind turbines has ascendancy over other traditional cooling methods. It offers a more safe, more reliable and effective in result of cooling. So it is worthy to have a deep research on analysis of the inner cooling structure of the stator coils. Based on a 5MW wind turbine stator, a simulation model in three dimensions for temperature calculating of the stator coil was developed. Effect on the temperature of the stator coil concerned with change of load. Conclusion of this paper can be foundation for designing and manufacturing of wind turbines with evaporative inner cooling system.