Research on soft-switching and peak current of dual active bridge converters

This paper introduces the principle of the Dual Active Bridge Converters (DAB) in traditional phase-shifting control strategy and single phase-shifting control strategy. The soft-switching region and peak current equations of inductor are given in this paper in the two control strategies. At last, we build an 800W-prototype to compare the control performance of the two control strategies. The experimental results verifies the single phase-shifting control strategy can extend the softswitching region and decrease the peak current of inductor compare to traditional phase-shifting control strategy synchronously.