Bidirectional LLC-DAB Converter for Battery Charger Applications: Analysis and Design

abstract-Efficient and reliable energy conversion in power electronics converters is intricately linked to the implementation of soft switching, a key factor offering heightened efficiency, lower Electromagnetic Interference (EMI), increased power density, and prevention of overheating issues. Using LLC and DAB soft-switching converters in conjunction, the paper explores the synergistic potential of using both technologies while mitigating their inherent weaknesses. The proposed methodology involves incorporating LLC for light load conditions, providing voltage regulation capabilities, and seamlessly transitioning to DAB for heavier loads. The viability of this approach is substantiated through simulation using MATLAB/Simulink, offering insights into its performance across diverse load ranges.