Refine
Year of publication
- 2024 (1)
Document Type
Language
- English (1)
Has full text
- yes (1)
Is part of the Bibliography
- yes (1)
Institute
- Technik (1)
Publisher
- IEEE (1)
A single stage dual active half-bridge single phase solid-state transformer with wide input-range
(2024)
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.
