Journal
APPLIED THERMAL ENGINEERING
Volume 199, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2021.117560
Keywords
Power Electronics; Heat Sink; Forced Air Cooling; Uniform Temperature Distribution; Air Guide Plate; Semiconductor Reliability; Semiconductor Lifetime
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The paper discusses an approach to design a forced air-cooling heat sink that can uniformly distribute temperature on semiconductor modules. By modifying a conventional fin-based heat sink, an air guide plate is attached to redistribute airflow through the fins. Numerical simulations show that the proposed approach achieves a good uniform distribution of temperature.
The paper discusses an approach to the design of the forced air-cooling heat sink for power electronic application to uniformly distribute the temperature of the semiconductor modules fixed on the top of the heat sink. The proposed approach suggests a minor modification of a conventional fin-based heat sink commonly manufactured for cooling of power electronic modules. Following the proposed modification, an air guide plate having a Vshaped cut is attached to the bottom of the heat sink to redistribute the airflow through the fins. To verify the proposed approach, the modified forced air-cooling system for a power electronic circuit comprising of three IGBT modules was modelled and numerically simulated using Ansys Fluent software under steady-state conditions. The numerical analysis was conducted for a range of power loss 50-100 W in each IGBT module and an airspeed of 5 m/s through the heat sink. The simulation results have shown a good uniform distribution of the temperature across the IGBT modules where the temperature difference does not exceed 0.21 degrees C.
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