晶闸管组件瞬态温度场的快速计算  

Fast Calculation of Transient Temperature Field for Thyristor Module

作　　者：丁杰[1,2] 张平[1] 

机构地区：[1]湘潭大学土木工程与力学学院,湘潭411105 [2]株洲南车时代电气股份有限公司技术中心,株洲412001

出　　处：《电气工程学报》2016年第12期37-44,共8页Journal of Electrical Engineering

基　　金：湖南省自然科学省市联合基金重点项目(12JJ8020)

摘　　要：准确计算晶闸管组件的瞬态温度场对提高器件应用的可靠性具有重要意义。为此,讨论了现有晶闸管瞬态热分析和建模方法的特点,提出了一种计算效率和准确性高的方法。通过开发的程序快速计算多种复杂工况下的瞬态温度场,得到了最高温度变化曲线。计算结果表明网格数量的直接减少可大幅度减少计算资源与时间,对流换热系数插值可以保证边界条件的一致性,模型降阶方法可以在保证计算精度基础上提高计算效率。所述方法可为晶闸管组件的热设计提供理论依据。Accurate calculation of transient temperature field for thyristor module is meaningful to improve the reliability of the device application. Therefore, the characteristics of transient thermal analysis and modeling method of the thyristor are discussed, a novel method for calculating efficiency and accuracy is proposed. The highest temperature change curves are obtained according to the fast calculation of transient temperature field for variety complex conditions by developed program. The calculation results show that the grid number of direct reduction can greatly decrease the computing resource and time, the consistency of boundary condition can be guaranteed by the interpolation of convective heat transfer coefficient, and the calculation accuracy and efficiency can be achieved by model order reduction method. The proposed method provides a theoretical basis for the thermal design of thyristor module.

关 键 词：晶闸管组件 瞬态温度场 模型降阶 对流换热系数 插值 

分 类 号：TM461.4[电气工程—电器]