摘要
为了科学合理的掌握机车IGBT功率模块冷却器在正常运行过程中的传热特性，搭建标准风洞实验系统，研究风速5～7m／s，散热器进风温度30-45℃，基板温度分别为70℃和80℃条件下，热管式空气冷却器的散热量，基板的工作温度范围以及进风速度和温度对换热的影响。实验结果表明：在实验进风速度和进风温度下，冷却器正常工作时，基板温度越高，冷却器散热量就越大，当基板温度为80℃时，冷却器的散热量在5400～7400W之间。通过冷却器的散热量可以得到：在机车正常工作时，冷却器基板的最佳工作温度在70—90℃之间。进风速度小于进风温度对换热量的影响，考虑到降低能耗和减少噪音污染，流经冷却器的风速应不超过7m／s。以上实验结果为高速动车组牵引整流器热管式空气冷却器的选型和设计提供科学参考。
To master heat transfer characteristics of locomotive IGBT power module cooler, experimental system on the heat dissipation, substrate temperature range and the effects of air velocity and inlet air temperature on the heat transfer of the heat pipe cooler is built. The experiments are conducted under air velocity at 5 -7m/s, inlet air temperature at 30 -45℃ and substrate temperature at 70 -80℃. Ex- perimental results show that the higher the substrate temperature is, the more heat is dissipated; when the substrate temperature is at 80℃ ,the heat dissipating capacity is 5400 -7400W. The results also show that the optimal working temperature of substrate is at 70 90~C for the cooler. Inlet air temperature has more effects on the heat transfer than air velocity. Considering energy consumption and noise level of the air velocity flowing through the cooler should not be more than 7m/s. Experimental results provide a scientific basis for the selection and design of the cooler.
出处
《制冷学报》
CAS
CSCD
北大核心
2013年第5期90-94,共5页
Journal of Refrigeration
关键词
IGBT
牵引整流器
热管
温度
IGBT
traction rectifiers
heat pipe
temperature
