Optimized Design Of Radiator For Converter Of EMU

The economic level of contemporary China has been continuously improved,which has led to the rapid development of scientific research,especially in the fields of railway trains and electronic technology.Devices such as electronic components play an important role in motor vehicles,especially high-power IGBT modules for converters.Nowadays,electronic devices are constantly moving toward high power density,and the resulting high heat generation can cause the device to be overheated and affect the normal operation or even burnout of the device.This not only increases the operating cost of the motor train but also seriously affects the safety of the train.Therefore,it is extremely necessary to optimize the design of the radiator for the electric vehicle converter to ensure the safe and stable operation of the equipment.The purpose of this project is to design an efficient radiator for the IGBT module in the CRH2 EMU converter.Considering the environmental conditions inside the motor car,the design uses an aluminum water-cooled radiator.Under the premise of meeting the heat exchange requirements,the shape design of the radiator is miniaturized as much as possible to save space.At the same time,the internal flow passage and the inlet and outlet chambers are optimized to enhance heat transfer and flow performance.The main contents of this paper are as follows:(1)For the high-power IGBT modules used in CRH2 high-speed train units,this paper designs four high-efficiency radiators for EMU traction converters based on the research results of related scholars in the field of electronic equipment cooling.The radiators designed in this paper are shun-30x10,shun-20x10,cha-30x10,cha-20x10,and the performance of the designed radiator is checked.(2)The four heat sinks designed by FLUENT were used for CFD simulation,and the simulation results were comprehensively analyzed to determine that cha-30x10 is the best performance heat sink model among the four models.The FLUENT simulation results are compared with the literature test results to verify the reliability of the simulation results.(3)According to the simulation results of the four radiator performances designed in this study,based on the model cha-30x10,the structure is re-optimized:the straight fins of the original model are changed to 120°?140° and 160° angled fins.The optimized model is subjected to CFD simulation and the simulation results are analyzed.The optimal solution for this study is 160° angled finned radiator.The optimized model is subjected to CFD simulation and the simulation results are analyzed.The optimal solution for this study is 160° angled finned radiator.The optimization scheme was applied to the shun-30x10 radiator model for simulation to verify the general applicability of the optimization scheme.