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Design and Evaluation of a Reconfigurable Stacked Active Bridge DC–DC Converter for Efficient Wide Load Range Operation.
- Source :
- IEEE Transactions on Power Electronics; Dec2018, Vol. 33 Issue 12, p10428-10448, 21p
- Publication Year :
- 2018
-
Abstract
- This paper presents the design and implementation of a large-step-down soft-switched dc–dc converter based on the active bridge technique, which overcomes some of the limitations of the conventional dual active bridge converter. The topology comprises a double-stacked bridge inverter coupled to a reconfigurable rectifier through a special three-winding leakage transformer. This particular combination of stages enables the converter to run in an additional low-power mode that greatly increases light-load efficiency by reducing core loss and extending the zero-voltage switching range. The converter is implemented with a single compact magnetic component, providing power combining, isolation, voltage transformation, and energy transfer inductance. A 175 kHz, 300 W, 380–12 V GaN-based prototype converter achieves 95.9% efficiency at full load, a peak efficiency of 97.0%, an efficiency above 92.7% down to 10% load, and an efficiency above 79.8% down to 3.3% load. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08858993
- Volume :
- 33
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 131880846
- Full Text :
- https://doi.org/10.1109/TPEL.2018.2801306