摘要
随着电机系统向高功率密度、高过载能力和高速小型化等方向发展,电机损耗与温升持续增加,严重影响了电机的运行效率、可靠性和寿命。单一的基础型散热系统已不能满足高功率密度电机的冷却需求,融合多种散热方式的混合型高效率散热系统逐渐成为当前抑制电机温升和提升电机运行稳定性的重要技术手段。本文首先介绍风冷和液冷两种基础型散热系统的优缺点和适用范围,然后指出单一散热系统的局限性,从而指出采用混合型散热技术的必要性。按照减小热阻的不同方式对混合型散热系统进行分类,对比分析不同混合型散热技术在高功率密度电机中的应用效果,给出高功率密度电机混合散热方法的设计指南。最后对高功率密度电机混合型散热系统的发展趋势进行预测与展望。
With the development of motors in the direction of high power density,high overload capacity and high-speed miniaturization,motor losses and temperature rise continue to increase,which seriously affects the operating efficiency,reliability and life of the motor.A single basic cooling system can no longer meet the cooling needs of high power density motors.A hybrid high-efficiency heat dissipation system that integrates multiple heat dissipation technologies is an important technical means to suppress the current temperature rise of the motor and improve the stability of the motor operation.This paper first introduces the advantages,disadvantages and application scope of air-cooled and liquid cooled basic cooling systems,and then points out the limitations of single cooling system and the necessity of using hybrid cooling system.Then the hybrid cooling system is classified according to the principle of reducing thermal resistance.The application effect of different hybrid cooling systems for high power density motor is compared and analyzed,and the design guide of hybrid cooling system for high power density motor is given.Finally,the development trend of hybrid cooling system for high power density motor is predicted and prospected.
作者
朱婷
张雨晴
李强
王俞
耿伟伟
ZHU Ting;ZHANG Yuqing;LI Qiang;WANG Yu;GENG Weiwei(Nanjing University of Science and Technology,Nanjing 210094;Fudan University,Shanghai 200433)
出处
《电气技术》
2022年第8期1-16,52,共17页
Electrical Engineering
关键词
高功率密度电机
混合
散热系统
温升
热分析
high power density motor
hybrid
cooling system
temperature rise
thermal analysis
