Thermal field calculation coupled with fluid field for permanent magnet direct-driven wind power generator with evaporative cooling system and air cooling system

A prototype of permanent magnet direct-driven wind power generator with evaporative cooling system and air cooling system is proposed in this paper. According to the characteristics of fluid field and thermal field, a three dimension equivalent physical model is established for this generator to simulate the entire fluid field and thermal field by conjugated thermal transfer method. As the calculation results, the air velocity distribution and temperature distribution of stator iron and coils are given in this paper, and the calculation results prove that this combination of evaporative cooling system and air cooling system is helpful for permanent magnet direct-driven wind power generator.