摘要
为获得全轴向通风无刷励磁机中定转子部件及同轴布置的单侧整流盘区空气温度分布特点,建立其整机流固耦合物理模型,基于计算流体动力学原理,采用有限体积法,给定边界条件,对励磁机整机三维湍流流动及传热控制方程进行数值求解与分析。结果表明:整流盘附近空气温度50～72℃,远低于二极管工作环境允许的极限温度110℃,相同截面位置转子线棒温度高于定子线棒,转子风沟空气温度较高。数值模拟结果与测点间的温度值误差较小,其相对误差为-4. 5%;采用有限体积法与工厂采用等效热网络法所得励磁机定转子部件体平均温度,相对误差绝对值均小于10%,证明本文数值计算结果的准确性。研究结果可为同类型励磁机风路设计提供参考。
In order to obtain the characteristics of the air temperature distribution in the stator and rotor parts of the full axial ventilation brushless exciter and the single side rectifier arranged coaxially,the fluid-solid coupling physical model was established.Finite volume method was adopted,boundary conditions were given,and the calculation and analysis of exciter three dimensional turbulent flow and temperature field is conducted based on computational fluid dynamics.The results show that the air temperature 50~72℃ near the rectifier is much lower than the allowable temperature 110℃ of the diode working environment,rotor bar temperature is higher than stator bar in same section position,and the air temperature of rotor wind channel is higher than that of stator.The error -4.5% between the numerical simulation results and the measured values is small,the error 10% between the finite volume method and the equivalent thermal network method for obtaining the average temperature of the stator and rotor is also small,both of which prove the accuracy of the numerical results.The results above provides reference for the design of the same type of exciter.
作者
路义萍
刘延浩
韩家德
李会兰
LU Yi-ping;LIU Yan-hao;HAN Jia-de;LI Hui-lan(School of Mechanical & Power Engineering,Harbin University of Science and Technology,Harbin 150080,China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2019年第3期81-87,共7页
Electric Machines and Control
基金
国家自然科学基金(50976027)
哈尔滨市科技创新人才基金(2013RFXXJ032)
关键词
无刷励磁机
三维温度场
数值模拟
全轴向通风
brushless exciter
three-dimensional temperature field
numerical simulation
full axial ventilation
