三电平模组散热设计及数值分析  

Three-level Module Heat Dissipation Design and Numerical Analysis

作　　者：苏雷 恽强龙 张广泰 吴继平 Su Lei;Yun Qianglong;Zhang Guangtai;Wu Jiping(NR Electric Power Electronics Co.,Ltd.,Changzhou,Jiangsu 213025,China;Jiangsu Engineering Research Center for Flexible Power Transmission and Transformation Unit,Changzhou,Jiangsu 213025,China)

机构地区：[1]常州博瑞电力自动化设备有限公司,江苏常州213025 [2]江苏省柔性输变电装备工程技术研究中心,江苏常州213025

出　　处：《机电工程技术》2024年第2期267-269,298,共4页Mechanical & Electrical Engineering Technology

摘　　要：综合考虑加工便捷性、均温效果、实用性因素,设计了一款适用于排列分布功率器件的螺旋线型结构散热器。基于三电平半桥模组结构应用场景,结合功率器件损耗、水冷系统常规工程应用条件需求,以及结构加工工艺难度及经济性,以进出水温差、进水流量作为变量,设计了两款散热器流道结构。两款流道均采用均温性强的螺旋线型流道结构,按照器件安装需求,分别拼接并联流道和含S弯道的串并联流道两种结构。通过流阻及温度仿真分析,得到两种方案对应的流道流阻数据及IGBT安装面最高温度、温差数据,根据散热系统设计要求,综合评估判断流道设计方案流量分配合理性。结合散热效果及散热经济性,比较流道流阻及设计裕度,确定在常规水冷工况下散热器流道最优设计方案。研究成果可为螺旋线型水冷散热器的设计提供指导。Taking into account factors such as processing convenience,temperature uniformity and practicality,a spiral shaped heat sink suitable for arranging distributed power devices has been designed.Based on the application scenario of a three-level half bridge module structure,combine with power device losses,conventional engineering application requirements for water cooling systems,as well as the difficulty and economy of structural processing technology,two heat sink channel structures are designed with inlet and outlet water temperature difference and inlet flow rate as variables.Both channels adopt a spiral shaped channel structure with strong temperature uniformity.According to device installation requirements,parallel channels and series parallel channels with S-bends are spliced separately.Through simulation analysis of flow resistance and temperature,the corresponding flow resistance data of the two schemes,as well as the maximum temperature and temperature difference data of the IGBT installation surface,are obtained.Based on the design requirements of the heat dissipation system,the rationality of flow distribution in the flow channel design scheme is comprehensively evaluated and judged.Based on the heat dissipation effect and heat dissipation economy,compare the flow resistance and design margin of the channel,and determine the optimal design scheme of the radiator channel under conventional water cooling conditions.The research achievement provides guidance for the design of helical water-cooled radiators.

关 键 词：散热器 流道设计 流阻 散热效果 

分 类 号：TN305[电子电信—物理电子学]