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为了能在下一代风力发电系统中起到重要的作用,我们已经开发出一种新型的600A-1700V IGBT模块。这种模块主要具有以下特点:(1)热阻低,这是通过采用带有针形翅片散热器的无导热硅脂的“直接液体冷却”技术实现的,其中冷却液通过针形翅片的压降以及效率都经过了优化设计;(2)封装尺寸小,这使电源调节器系统小型化成为可能;(3)可靠性高且寿命长,这是通过高强度Si_3N_4绝缘衬底和新开发的RoHS焊接技术来实现的。与采用导热硅脂间接冷却的传统模块相比较,我们发现此IGBT模块的热阻Rj-w降低了35%;与传统模块在相同功率容量下比较时,这种IGBT模块连同冷却液通道的基座(channel coverjacket)的总重量减轻了大约37%,体积减小了约45%。
In order to play an important role in the next generation of wind power generation systems, we have developed a new 600A-1700V IGBT module. This module has the following main features: (1) low thermal resistance, this is through the use of non-thermal grease with a pin fin heat sink “direct liquid cooling ” technology to achieve, wherein the coolant through the needle (2) small package size, which makes it possible to miniaturize the power conditioner system; (3) high reliability and long life, which is achieved through high-strength Si_3N_4 insulating substrate And the newly developed RoHS welding technology to achieve. We found that the thermal resistance Rj-w of this IGBT module was reduced by 35% compared with the conventional module with indirect thermal conductivity of the thermal grease. Compared with the conventional module at the same power capacity, this IGBT module, together with the base of the coolant channel The total weight of the seat cover was reduced by about 37% and the volume was reduced by about 45%.