Analysis of 3D thermal field in the stator of high-capacity and high-torque-density motor with forced evaporative-cooling system

Forced evaporative-cooling (FEC) system has the advantages of simple structure, less cooling medium dosage and good cooling performance. It can realize the efficient cooling of the high-capacity and high-torque-density motor. It is worthy to simulate the thermal field of the stator in order to have a deep research on the cooling performance and the distribution of the thermal field. Based on analysis of a high-capacity and high-torque-density motor stator with the FEC system, a complete simulation model in 3D for temperature calculation of the stator was developed of stator concerned with the change of stator segmentation ratio, thickness of sealed gel on the inner stator surface and area ratio between stator tooth body and back-iron was also analyzed. Distribution rule of stator temperature field has been obtained and result of emulation was tested agree well with experiment. Conclusion of this paper can be provided as academic foundation for more application in high-capacity motor with FEC system.