Rigorous choice of optimal switch mode power supply topology using response surface method

The aim of this paper is to propose a methodology to help the designers to choose the best-suited isolated dc-dc converter topology for given specifications. To do so, a response surface method (RSM) approach is used in combination with a multiobjective optimal design tool dedicated to such power converters and using genetic algorithms. So the response surfaces are computed based on optimized power converters. Two factors are studied, viz. the converter input voltage and output power, whereas two response variables are considered, viz. the power loss and the weight of the converter. Moreover, the ranges of these factors are, respectively, chosen between 100 V to 2 kV as well as 1 kW to 250 kW. Five isolated dc-dc converter topologies are considered, viz. the flyback, forward, push-pull, half-bridge (HB) and full-bridge (FB) converters. The results show that the best-suited converter depends on the specifications.