摘要
绝缘栅双极型晶体管(IGBT)模块功耗持续增加,对风冷散热提出了更高要求。以某大型冷水机组变频器为研究对象,结合仿真模拟和试验测试,提出IGBT散热器优化方案:一是将散热器翅片间距从3.0 mm减小到2.5 mm,增大换热面积;二是给每个IGBT模块增加2根热管,突破肋效率带来的瓶颈问题。优化后进行验证,IGBT的工作结温从149.9℃降到127.2℃,达到了IGBT最高工作结温控制在130℃以内的设计要求;同时对热管相容性和寿命进行评估,表明热管工作介质不会对管壳材料造成腐蚀或者溶解,热管寿命可达到21万3414小时,能够保证变频器和IGBT模块的长期可靠运行。
The power consumption of Insulated Gate Bipolar Transistor(IGBT)module always increases,which puts forward higher requirements for air-cooled heat dissipation.Taking the inverter of a large chiller as the research object,combined with forward simulation and experimental test,the optimization scheme of IGBT heat dissipator is proposed:firstly,the fin spacing of the heat dissipator is reduced from 3.0 mm to 2.5 mm to increase the heat exchange area;secondly,2 heat pipes are added to each IGBT module to break through the bottleneck problem of rib efficiency.The verification after optimization shows that,the working junction temperature of IGBT is reduced from 149.9℃to 127.2℃,which meets the design requirement that the maximum working junction temperature of IGBT must be controlled within 130℃;At the same time,the compatibility and life of the heat pipe are evaluated,showing that the working medium of the heat pipe will not corrode or dissolve the shell material.The service life of the heat pipe can reach 213414 hours,which can ensure the long-term and reliable operation of the inverter and IGBT module.
作者
陈俊杰
周雷
秋雨豪
CHEN Jun-jie;ZHOU Lei;QIU Yu-hao(Trane Technologies Engineering&Technology Center-Asia Pacific,Taicang 215400,China)
出处
《工业技术创新》
2020年第6期45-49,66,共6页
Industrial Technology Innovation
关键词
IGBT散热器
风冷散热
热管
肋效率
工作结温
相容性
可靠性
IGBT Heat Dissipator
Air-cooled Heat Dissipation
Heat Pipe
Rib Efficiency
Working Junction Temperature
Compatibility
Reliability
