列车牵引变流器水冷散热的实验研究  

The Water Cooling Experimental Study on Train Traction Converters

作　　者：张永恒[1,2] 王业峰[1,2] 王良璧[1,2] 

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070 [2]铁道车辆热工教育部重点实验室(兰州交通大学),甘肃兰州730070

出　　处：《工程热物理学报》2013年第8期1534-1538,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.51166007)

摘　　要：针对于IGBT的冷却问题,通过实验研究探讨如何获得最大的表面传热系数h。依据IGBT的水冷原理,散热器的内部采用微槽道结构,在恒定加热功率下,对冷却试件进行了六种不同流量下的实验,得出上下冷却基板表面温度、表面传热系数、努塞尔数的分布。通过对实验结果的分析,获得冷却基板最大表面传热系数及平均努塞尔数随雷诺数的变化规律。Aimed at the cooling problem of IGBT, how to acquire the maximum surface heat transfer coefficient is investigated by experiment study. According to the principle of effective water cooling of IGBT, microgroove structure is adopted in the design of the internal flow passage of the cooling specimen. Under constant heating power, the cooling specimen is tested with six different flow fluxes, the distributions of temperature, surface heat transfer coefficient and Nusselt number on the surfaces of upper and lower cooling base plates are obtained. Through further analysis of experiment data, the maximum surface heat transfer coefficient and the correlation of average Nusselt number with the change of Reynolds number are also obtained.

关 键 词：牵引变流器 IGBT 水冷散热 微槽道 

分 类 号：U260.355[机械工程—车辆工程] TK124[交通运输工程—载运工具运用工程]