摘要
本文以光伏并网高频逆变器为对象采用ICEPAK软件对其进行了热设计。首先比较了逆变器中主要发热元件的热损,选取损耗最大的主功能模块IGBT作为热设计对象,在此基础上比较分析了自然对流、无散热器的强迫风冷以及带散热器的强迫风冷三种方式的散热效果,最终选择了带散热器的强迫风冷作为该型号逆变器内部发热元件的散热方式,并完成了散热器和风机的性能参数选择。结果表明,采用这种散热方式,能够将IGBT的结温降至54℃以下,完全满足其可靠工作的温度要求。
The cooling of a specific high-frequency photovohaic grid-connected inverter is designed with ICEPAK. Firstly, the core function module, IGBT, is chosen to be the center of attention during the thermal design process after comparing of the several main heating elements in the inverter. And then, based on the analysis of three cooling method： natural convection, forced convection without heat sink and forced convection with heat sink, the third one is the best choice given the power of the specific IGBT. After these analysis, we finally get the proper heat sink and fan, and the final temperature of the IGBT is below 54 degree, which is acceptable in view of stable working.
出处
《电子设计工程》
2013年第19期57-60,共4页
Electronic Design Engineering
