热界面材料对晶闸管换流阀热阻的影响

PDF全文下载：2017060032

倪君， 王梦婕1， 朱海涛1*， 查鲲鹏2， 周建辉3， 王航3， 雷清泉1

(1.青岛科技大学 材料科学与工程学院，山东 青岛 266042；2.南瑞集团中电普瑞电力工程有限公司，

北京 102200；3.全球能源互联网研究院，北京 102209)

摘要： 热界面材料应用于晶闸管换流阀上，能够增强其在高压直流输电整流电流时的散热能力，从而确保工作环境的安全稳定。在大功率晶闸管水冷散热器热阻流阻测试平台上测试了几种典型的热界面材料的系统有效热阻，探究了压装压力、冷却水流量、加热功率以及材料自身特性对系统有效热阻的影响。结果表明：在当前实验条件下，系统有效热阻随压装压力和冷却水流量的增大而减小，随加热功率的增大而增大；热界面材料对系统有效热阻降低的效果从大到小依次为：低熔点合金导热膏＞石墨烯导热膏＞TC-5625导热膏＞空气层＞铟箔；受压变形具有一定流动性的热界面材料应用于晶闸管换流阀时系统有效热阻更低。

关键词： 热界面材料； 晶闸管换流阀； 散热器； 有效热阻

中图分类号： TK 123文献标志码： A

引用格式：倪君， 王梦婕， 朱海涛， 等. 热界面材料对晶闸管换流阀热阻的影响\[J\]. 青岛科技大学学报（自然科学版）， 2017， 38（6）： 32-37.

NI Jun， WANG Mengjie， ZHU Haitao, et al. Influence of thermal interface materials on thermal resistance of thyristor valve\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2017, 38(6)： 32-37.

Influence of Thermal Interface Materials on

Thermal Resistance of Thyristor Valve

NI Jun1， WANG Mengjie1， ZHU Haitao1， ZHA Kunpeng2，

ZHOU Jianhui3， WANG Hang3， LEI Qingquan1

(1.College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;2.C-EPRI Electric Power Engineering Co.,LTD.NARI Group Corporation, Beijing 102200, China;3.Global Energy Interconnection Research Institute, Beijing 102209, China)

Abstract: Thermal interface materials can enhance the capability of heat dissipation of thyristor valve used in high voltage DC transmission and thus ensure the safety and stability of the work environment. In this paper, the system effective thermal resistances of several thermal interface materials were tested on a testing platform for the thermal resistance and flow resistance of the watercooled radiator for the high-power thyristor. The influence of pressure, flows, heating power and the material characteristic on the system effective thermal resistance was studied. Under the current experimental conditions, the results indicate that the system effective thermal resistance decreased with the increase of equipment pressure and the flow rate of cooling water. The system effective thermal resistance increased with the increase of heating power. The positive effect of thermal interface materials on the system effective thermal resistance appeared in the following order: Metal thermal paste>graphene thermal paste>TC-5625 thermal paste>air layer>indium foil. Thermal interface materials which are flowable and deformable give lower system effective thermal resistance when applied in thyristor valve.

Key words: thermal interface materials; thyristor valve; radiator; effective thermal resistance

收稿日期： 2016-06-06

基金项目： 国家自然科学基金项目（51472134）.

作者简介： 倪君（1990—），男，硕士研究生.*通信联系人.

文章编号： 1672-6987（2017）06-0032-06； DOI： 10.16351/j.1672-6987.2017.06.005