Design and Optimization of a Scalable Bidirectional DC-DC Converter for Electric Vehicle Charging Applications using SiC Switches

This paper introduces the design and optimization of a bidirectional Dual Active Bridge (DAB) converter tailored for electric vehicle (EV) battery charging applications, catering to a spectrum of vehicle sizes ranging from heavy-duty to light-duty. The focal point of this research revolves around a 6 kW DAB converter engineered to seamlessly transition between power outputs of 4 kW and 11.5 kW, accommodating diverse vehicle requirements without necessitating circuit component alterations. This adaptability is realized through the incorporation of interleaved and parallel operation capabilities, enabling efficient functionality across a wide power band and facilitating power transfer at high currents up to 260 A.