高速隐极电动机不同转子端部结构流动与传热耦合计算

Coupling Calculation of Flow and Heat Transfer in Different Rotor end Structures of High-speed Hidden Pole Motor

本文阐述高转隐极电动机在不同转子端部结构下转子流动特性和传热特性。针对某大型高速隐极电动机,通过有限体积法对电动机稳态运行时的三维流场和温度场进行耦合求解,研究转子端部通风结构对转子流场、温度场特征的影响关系,分析得到不同转子端部结构下转子各个风沟流量分布、转子风道静压分布以及转子通风沟的散热系数和温升分布情况。本文的研究成果,可进一步了解同类电动机转子通风结构的特点,为后续更多的高速隐极电动机通风结构设计奠定基础。

This paper describes the rotor flow characteristics and heat transfer characteristics of high-speed hidden pole motor under different rotor end cooling structures.For a large-scale highspeed hidden pole motor,the three-dimensional flow field and temperature field of the motor during steady-state operation are solved by the finite volume method.The influence of the rotor end ventilation structure on the characteristics of the rotor flow field and temperature field is studied.The flow distribution of each rotor duct,the static pressure distribution of the rotor duct,the heat dissipation coefficient and temperature rise distribution of the rotor ventilation duct under different rotor end structures are analyzed and obtained.The research results understanding the characteristics of rotor ventilation structure of similar motors further,and are reference for more ventilation structure design of high-speed hidden pole motor in the future.