Deadbeat Control for Single-Input Dual-Output Dual Active Bridge Converter

Recently, much attention has been paid to multiport bidirectional isolated DC-DC converters, particularly in power distribution networks and renewable energy sources. The single-input dual-output dual active bridge (DAB) converter can minimize the coupling effect among the inductances of the ports more so than the conventional triple active bridge (TAB) converter by eliminating the inductance on the input port. Therefore, the single-input dual-output DAB converter can function as two separate DAB converters, thereby significantly reducing the complexity of the model-based controller. This study proposes a simple deadbeat control for the single-input dual-output DAB converter under single phase-shift (SPS) modulation. The proposed control does not require any control variables when controlling the voltage at the output port. The proposed method's efficacy is demonstrated and validated through simulation in various operation scenarios.