异步电动机冷却结构优化及温度场仿真
Cooling structure optimization and temperature field simulation of asynchronous motor
摘要
为使电机温升满足绝缘设计要求,文章以一台6 000 kW异步电动机为研究对象,在原模型基础上,提出电机冷却风路的结构优化模型,建立电机三维温度场数值计算模型,并采用数值计算方法对电机额定工况下稳态温度场进行求解分析;此外,文章进一步分析了各优化部位调整前后对电机温升的影响.结果表明,结构优化后电机定子和转子的平均温升至少降低19.93%,而通过减小机壳与定子铁心之间的径向最小距离,定子铁心平均温升可降低10.60%,转子温升降低幅度可达10%以上.研究结果证明了优化方案的可行性,可以为异步电动机冷却结构优化设计提供参考.
In order to make the motor temperature rise meet the insulation design requirements,this study takes a 6 000 kW asyn-chronous motor as its object of study.Based on the original model,a structural optimization model of the motor cooling air path was pro-posed,a numerical calculation model of the three-dimensional temperature field of the motor was established,and the steady-state tem-perature field of the motor under the rated conditions was solved and analyzed by using the numerical calculation method.The impact of structural modifications on motor temperature rise before and after optimization was further analyzed.Results show that the optimized structure reduces average temperature rise in the stator and the rotor by at least 19.93%,and the reduction of the minimum radial distance between the housing and the stator core decreases the stator core temperature rise by 10.60%and the rotor temperature rise by more than 10%.These findings demonstrate the optimization scheme's feasibility and provide valuable references for cooling structure optimization design for asynchronous motors.
年，卷(期)：
2026, (1)
分类号：
TM343
U264.1+3
机标分类号：
TM311
U469.72
TH112
在线出版日期：
2026年6月8日
基金项目：
2024CYB270:中国中车重点研发项目，
