Dynamic and steady-state modeling of modular input-series-output-series connected dual active bridge converters

FEDERICO RODRIGUEZ; DANIEL O.GARRIDO; RUBÉN O. NÚÑEZ; GERMÁN G. OGGIER; GUILLERMO O. GARCÍA

REVISTA IBEROAMERICANA DE AUTOMATICA E INFORMATICA INDUSTRIAL

COMITE ESPANOL AUTOMATICA CEA

Lugar: Valencia; Año: 2021

1697-7912

This work presents a modular DC-DC converter modeling based on the input-series-output-series connection of two cells usingdual active bridge converters. This configuration is interesting in applications in which both ports of the converter must withstandmedium to high voltages. From the waveform analysis of the main electrical variables, the averaged equations are obtained todescribe the large-signal dynamics of the converter. The averaged model is linearized around an operating point of the converter,obtaining two sets of equations from which the influence of each parameter on the static and dynamic behavior of the converter isanalyzed. Simulation and experimental results allow the models obtained in the time domain to be validated, both in steady-stateand transient conditions, in the full power range of the converter.