Abstract
A dual-active-bridge-based single-stage ac/dc converter may find a wide range of emerging applications such as interfacing plug-in hybrid vehicles with the ac grid, interconnection of dc grid, etc. This type of converter can be used due to unique features such as 1) high-frequency isolation resulting in a) high power density and b) safety and voltage matching; 2) bidirectional power flow; 3) soft switching leading to higher efficiency. In this paper, a modulation strategy has been proposed that results in 1) open-loop power factor correction; 2) zero current switching in the ac-side converter for all load conditions; 3) linear power relationship for easy control implementation; and 4) Zero voltage switching in the load side converter. The converter with the proposed control has been analyzed. Simulation and experimental results on a 1-KW prototype confirm the advantages.
Original language | English (US) |
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Article number | 6676842 |
Pages (from-to) | 4007-4016 |
Number of pages | 10 |
Journal | IEEE Transactions on Power Electronics |
Volume | 29 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2014 |
Keywords
- AC-DC conversion
- bidirectional power flow
- high-frequency transformer