晶闸管组件瞬态温度场的快速计算

doi:10.11985/2016.12.006

摘要/Abstract

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。

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

Abstract:

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.

Key words: Thyristor module, transient temperature field, model order reduction, convective heat transfer coefficient, interpolation

中图分类号:

TM461.4

丁杰,张平. 晶闸管组件瞬态温度场的快速计算[J]. 电气工程学报, 2016, 11(12): 37-44.

Ding Jie,Zhang Ping. Fast Calculation of Transient Temperature Field for Thyristor Module[J]. Journal of Electrical Engineering, 2016, 11(12): 37-44.

图/表 13

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参考文献 12

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部件名称	材料名称	密度/ (kg/m³)	比热容/ [ J/(kg·K)]	导热系数/ [ W/(m·K)]
管座、管盖	无氧铜	8 960	380	387.6
阴极钼片、阳极钼片	钼	10 200	250	138
管芯	硅	2 330	710	161
瓷环	96瓷	3 750	780	23
定位销	45钢	7 900	460	20
其他	6063铝合金	2 719	871	202.4

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