Implementation and Experimental Validation of a Bidirectional Three-Port DC-DC Converter for Hybrid Electric Systems Applications

This article presents the implementation of a bidirectional three-port DC-DC converter for hybrid electric system applications. The objective of this converter is to control the power flow with high efficiency. Initially, the converter topology and its operation principle are described, then the implementation of a 3.55 kW experimental prototype describing its power stage and control stage is presented. Finally, experimental results for different cases of power transferences and different sets of auxiliary inductances are presented. These results validate the model of the converter. The maximum efficiency measured experimentally is of 96.07 %.