针对皮带运输用永磁外转子电动滚筒电机散热能力弱、转矩密度低、绕组温度高等问题，设计了一套基于710 kW电动滚筒的水冷系统，该系统通过流固耦合的方法建立三维场求解模型，并进行求解计算。同时分析了水道构型、水流量、水套外径、壁厚、水道数量、高度等参数对温升的影响。通过仿真分析和温升试验，验证了所设计的水冷系统有利于提高电动滚筒的散热能力，为进一步提高电动滚筒的转矩密度提供参考依据。

Aiming at the problems of weak heat dissipation, low torque density and high winding temperature of permanent magnet outer rotor electric drum motor for belt transportation, a water cooling system based on 710 kW electric drum is designed. In the system, a three-dimensional field solution model by fluid-structure coupling method is established, and the solution calculation is performed. The influence of water channel configuration, water flow, outer diameter of water jacket, wall thickness, number of water channel and height on temperature rise is analyzed. By simulation analysis and temperature rise test, it is rerified that the designed water cooling system is beneficial to improve the heat dissipation capacity of the electric roller, which provides a reference for further improving the torque density of the electric roller.