Thermal Solution for 7000W IGBT Cooling Project

IGBT is the core device for energy conversion and transmission, commonly known as the "CPU" of power electronic devices. As a national strategic emerging industry, it is widely used in rail transit, smart grid, aerospace, electric vehicles and new energy equipment.

Due to its own power loss, the temperature of the IGBT will rise. There are two main reasons for the heating of power devices: one is the on-state loss when the power device is turned on; the other is the switching loss generated during the turn-on and turn-off of the power device. IGBT power consumption is mainly composed of these two kinds, so how to dissipate the heat of IGBT reasonably and ensure its safe operation is an important content of IGBT application.

Traditional air-cooled heat dissipation has become more and more difficult in a high-power and high-loss environment, especially the heat dissipation of IGBTs in high-precision industries. And efficient, clean, and long-life water-cooled heat dissipation has been more applied to IGBT heat dissipation. Although water cooling is more expensive than air cooling and has the disadvantage of complicated maintenance, in the long run, water cooling is still an excellent solution.

The principle of water cooling is to use thermal fluid to circulate in the composed waterway to take away heat. It is usually composed of water pump, water pipe, cold head and cold exhaust. According to different IGBT heat dissipation areas, customized special cold heads can basically cover the heat dissipation of most products.

As an excellent heat dissipation solution, water cooling is being widely used in all walks of life. The popularization of water-cooling heat dissipation greatly reduces the loss of heat, which can effectively save various costs.

Below is Winshare Thermal thermal solution for 7000W IGBT cooling project:

IGBT 550Wx 10PCS=5500W.

Other power =1460W.

The rate of water flow : 15L/Min, at intake temperature 25℃.

Heat sink: AL6063 or AL1060 and FSW process.

Environment temperature: 35℃

The liquid cold plate surface maximum temperature is below 36℃.