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A Hybrid Control of a Semidual-Active-Bridge DC–DC Converter With Minimum Current Stress.
- Source :
- IEEE Transactions on Power Electronics; Mar2020, Vol. 35 Issue 3, p3085-3096, 12p
- Publication Year :
- 2020
-
Abstract
- With the conventional secondary phase-shifted (PS) control, a semidual-active-bridge (S-DAB) dc–dc converter suffers from low efficiency at light load in buck mode due to hard switching and high tank current. In order to avoid this phenomenon and extend soft-switching range, a hybrid control including the primary pulsewidth modulation plus secondary phase-shifted (PWM+PS) is proposed in this paper. Under the proposed hybrid control, all steady-state operation modes with distinctive features are identified and analyzed. Based on the operation range, power characteristics and switching behaviors in each mode, a minimum peak current control route is developed, which can enable the converter to work with low tank current and soft switching over the whole load range. A lab-scale S-DAB converter is implemented to validate the theoretical analysis, and experimental results reveal that the higher efficiency can be achieved using the proposed control route. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08858993
- Volume :
- 35
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 140827881
- Full Text :
- https://doi.org/10.1109/TPEL.2019.2925412