@inproceedings{UlrichOhlerSchenzleetal.2024,
  author    = {Ulrich, Burkhard and Ohler, Fabian and Schenzle, Fabian and Walter, Tobias},
  title     = {A single stage dual active half-bridge single phase solid-state transformer with wide input-range},
  booktitle = {APEC : thirty-ninth annual IEEE applied power electronics conference and exposition, 25-29 February 2024, Long Beach, California, proceedings},
  doi       = {10.1109/APEC48139.2024.10509423},
  institution = {Technik},
  pages     = {493 -- 500},
  year      = {2024},
  abstract  = {This article proposes a single-phase solid-state transformer with a wide input range. The converter is based on a direct ac/ac dual-active half-bridge topology utilizing four-quadrant switches. A two-mode control concept, combining a phase-shift modulation with a new variable dead time modulation, is proposed to control the output voltage over a varying input voltage and load range. Due to the presented variable dead time modulation concept, the step-down capability can be expanded. Combining the control principle with the topology leads to a very low-complexity system design. The converter structure and operating principle are described and analyzed in detail. Simulation results and measurements on a 600 W prototype, using SiC cascode FETs switching at 250 kHz, with an ac input voltage varying from 120 V to 400 V, verify the proposed concept.},
  language  = {en}
}