Design and Implementation of an SiC-based 48 V-380 V Dual Active Bridge DC-DC Converter for Batteries Employed in Green Hydrogen Microgrids

In this paper, a bidirectional Dual-Active Bridge (DAB) DC-DC converter has been designed and implemented for energy transfer to an electrolyzer in a green hydrogen production system. The converter transfers power between an energy storage system (here battery) and the DC busbar, respectively rated at 48 V and 380 V. It can also be used to supply the 48 V electrolyzer from the busbar through a unidirectional power flow. A closed-loop control system based on the Proportional Integral (PI) compensator is devised for the SiC-based DC-DC converter using the F28379D control chip. Experiments are conducted to validate the design procedures.