Open-Loop Control Algorithm for Multi-Active-Bridge Converters to Eliminate DC-Bias Currents Caused by Transient Load Changes

This paper presents an open-loop control algorithm for Multi-Active-Bridge (MAB) dc-dc converters which provides a fast settling-time within one half of the switching period. Furthermore, the control algorithm prevents undesired transient dc-bias components in the current waveforms and is independent on any measurements or system parameters. The open-loop control algorithm can be combined with arbitrary closed-loop control algorithms to compensate disturbances.