Experimental study on the Heat Dissipation Performance of Straight-ribbed Radiator for Converter Valve Based on Phase Change Cooling

With the continuous grid connection of new energy sources, the capacity of converters increases accordingly, and the demand for cooling capacity becomes increasingly stronger. To enhance the heat dissipation capacity of the converter, this paper proposes a straight-ribbed enhanced heat exchange radiator based on phase change cooling and studies its enhanced heat exchange characteristics. Firstly, an IGBT phase change cooling experimental platform was established to compare the differences in cooling capacity among straight-ribbed enhanced heat exchange radiators. Secondly, the internal heat exchange characteristics and the internal working medium flow characteristics of the straight-ribbed enhanced heat exchange radiator were studied, and the influences of the rib height, rib width and rib number inside the straight-ribbed enhanced heat exchange radiator on the heat dissipation characteristics of the radiator were explored. The research results show that, under the condition of a certain heat exchange area, increasing the rib height, widening the rib width and reducing the number of ribs are beneficial to improving the flow characteristics of the working medium inside the radiator and enhancing the heat exchange capacity of the radiator.