Design of DAB Converter for Type-2 Charging Infrastructures

One of the crucial interfaces for bidirectional power exchange between two buses with galvanic isolation is the dual active bridge (DAB). This paper presents a design framework tailored to meet the operational needs of a DAB working with type-2 charging infrastructure. It is meticulously crafted to handle the specific demands of an output voltage range from 100V to 1000V. Central to this study is the creation of an extensive dataset, showcasing a variety of suitable switching elements and transformer cores optimized for this voltage spectrum. A detailed analysis of core, copper, and switching losses has been undertaken, examining a myriad of components functioning within the Zero Voltage Switching (ZVS) regime across different voltage and current scenarios. The portrayal of a 500V output voltage stands as a prime exemplar of this study’s contributions. Furthermore, the ensuing simulation results are thoroughly compared with outputs from established design methods. This research paves the way for the evolution of sophisticated and efficient charging infrastructures, catering to the burgeoning electric vehicle landscape.