Performance Analysis of Dual-Active-Bridge Isolated DC-DC Converter Using DPS Modulation

The Dual-Phase-Shift (DPS) modulation can improve the efficiency of insulated dual-directional DC-DC converter in comparison with the classical extended phase shift and single-phase shift control approach. This study investigates maximum efficiency and the power flow at various phase shift angle. Furthermore, investigate the switching behavior of insulated dual-directional DC-DC converter operating in double phase shift control is presented. The double-phase-shift modulation provides two adjustable parameters: the inner phase shift and the outer phase shift angles. It enables precise control over power flow and voltage regulation across the load, thereby enhancing the effective operation of the dual active bridge (DAB) converter. The utilization of a proportional-integral (PI) controller is employed to effectively supervise the output voltage and attain enhanced efficiency. The simulation of converter model in dual-phase-shift modulation is performed using MATLAB/Simulink.