Abstract
This paper presents an open-loop control algorithm for multi-active bridge dc-dc converters, that provides a fast settling time within one half of a switching period. Furthermore, the control algorithm prevents undesired dc-bias components in the current waveforms and does not require any system parameters or measurements. The open-loop control algorithm can be combined with arbitrary closed-loop control algorithms to compensate disturbances. The first section of the paper deals with the generalized derivation of the equations for an arbitrary number of ports followed by simulative validation in the second section. Subsequently, influences of the dead time are investigated in the third section. A methodology for compensating the effects of dead time is presented and validated by simulation.
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