大功率牵引主变压器油箱壁的三维涡流场与温度场的分析计算  

Analysis and calculation of eddy current and temperature field on oil tank of high-power traction main transformer

作　　者：梁湘湘 许加柱[2] 姚新丽[2] 

机构地区：[1]南车株洲电机有限公司,湖南株洲412001 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《电力机车与城轨车辆》2011年第6期38-40,共3页Electric Locomotives & Mass Transit Vehicles

基　　金：铁道部科技研究开发计划(2009J006-A)

摘　　要：文章以某一实际大功率电力机车牵引主变压器为研究对象,首先建立了其三维涡流场和温度场数学模型及两者的耦合计算有限元模型,计算出各油箱壁的涡流分布和损耗;并将油箱壁各单元的涡流损耗作为温度场计算的热源,结合经典传热学理论和实际的流速情况,计算出油箱壁的内外侧的表面散热系数,得出了油箱壁的温度场分布及局部最高温升,为变压器优化设计提供重要理论依据。In the paper ,taking an actual traction main transformer as the researching object ,the mathematics of the three-dimension eddy current and temperature fields and the finite element coupled model are established firstly ,and the eddy current distribution and loss are calculate＇d, which is as the load in the temperature field. Combining with the classical theory of heat transfer and the factual fluid velocity,the surface coefficients of heat transfer are calculated in the inside and outside of the oil tank. In the end, the temperature distribution and partial top temperature rise are computed, which refers theoretical basis for the optimizing design of structure.

关 键 词：牵引主变压器 温度场 表面散热系数 有限元模型 优化设计 

分 类 号：U264.3[机械工程—车辆工程]