Transient current control for a step load change in a dual-active-bridge converter

To deal with a command of step load change for a dual-active-bridge converter, a transient current control with a multi-phase-shift gating scheme is needed. By selecting a reference signal with a floating position, the effective transient current control can be achieved by moving multiple voltage edges in sequence, which would fulfil the step transition of the load level in a fast and smooth manner. Although the analysis is derived using triple-phase-shift schemes, the proposed control can also be applied to other multi-phase-shift schemes, such as extended-phase-shit and dual-phase-shift scheme. An experimental test validated the correctness and effectiveness of the proposed transient current control.