A Model-Based Control Strategy to Minimize Transient Oscillations at Load Steps for Current-Fed Triple-Active-Bridge DC-DC Converters

So far, current transients in the boost inductors of current-fed triple-active-brigde (CFTAB) converters are often accepted or ignored in the literature as the considered time interval of simulation and measurement results is typically very large so that the transient behavior of the current is not visible.

In this work, a model-based control strategy is presented that minimizes transient current oscillations in the boost inductors of CFTAB converters after a load step, which improves the dynamic performance of the converter drastically and furthermore prevents saturation and additional losses.