Phyllotactic Pattern Heatsink Optimization in High Power Density Inverters Based on Response Surface Analysis

Demanding the accuracy and reliability of the thermal design of high-power density inverter, aluminum substrate has been widely used due to its high thermal conductivity and well insulation performance. This paper provides a complete set of thermal design optimization method: The main power module losses are analyzed. Considering the accurate thermal resistance models for heatsink of variable structural types is hard to modelling, the method of combining finite element simulation and Minitab response surface optimization is mainly used to carry out the multi-objective optimization design with the substrate thickness, fin radius and fin length as the optimization objectives. Finally, it is verified that the heatsink model and optimization method are highly convenient and effective, and can provide a reliable method for structural optimization of heatsink for inverters.