Efficiency Comparison in Power Converters Under Transient Operation Conditions: Application to Hybrid Energy Storage Systems

Abstract

This work proposes a methodology for selecting the optimal configuration, in terms of energy efficiency, in power conversion applications. The outcomes of the selection are both the power topology among different options, together with a set of parameters for the design variables for that topology ensuring the highest efficiency for the target operating conditions. An example of this methodology is provided for a Hybrid Energy Storage System application in a given nanogrid. Two options for the power converter topology are presented, and also each of them is assessed in two basic operation modes: islanding mode and transient support mode. The final methodology provides a tool for selecting among the optimal power topology design considering the total efficiency of the system.