A Model-Based Control Strategy Enhancing the Dynamic Performance of Current-Fed Triple-Active-Bridge DC-DC Converters
Paul Kowalewski, André Thönnessen, Niklas Fritz, Rik W. De Doncker, 2022 IEEE 7th Southern Power Electronic Conference (SPEC), 05. Dezember 2022 - 08. Dezember 2022.
This paper introduces a control strategy to enhance the dynamic performance of current-fed triple-active-brigde (CFTAB) converters to its physical limits. So far, current transients in the inductors of 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 reaches the new steady state after a load step as fast as physically possible and furthermore prevents current oscillations, saturation and additional losses.