Measuring Double-Sided Thermal Resistance of Press-Pack IGBT Modules Based on Ratio of Double-Sided Heat Dissipation

An Improved Design for a Heat Sink of a Power Conversion System Adapted to the High Altitude and Cold Environment of the Plateau

“…Thermal resistance represents the resistance encountered by heat conduction along the heat flow path, and is a comprehensive parameter that reflects the ability to prevent heat transfer [7]. Before calculating and analyzing the thermal resistance of the radiator, the radiator is simplified and it is considered that there are two forms of convection heat transfer thermal resistance and table heat conduction thermal resistance.…”

“…Use SOLIDWORKS software to accurately measure the model parameters, and consult the fluid and solid thermal conductivity manual tables to obtain the specific parameters of radiators A and B, as shown in table 2. Through the parameters in table 2 and combining equations ( 8), ( 4), ( 6), (7), and (3), the thermal resistance of liquid cooling radiator A is approximately 0.235 /W  , The thermal resistance of liquid cooling radiator B is about 0.109 /W  , It can be seen that the thermal resistance of radiator A is twice as much as that of radiator B. Under the same heat loss, the heat transfer amount of A accounts for about 46.4% of that of B, which means that the total temperature rise of A is larger.…”