A Single-Stage Dual-Active-Bridge-Based Soft Switched AC-DC Converter With Open-Loop Power Factor Correction and Other Advanced Features

作者：Weise Nathan D^*; Castelino Gysler; Basu Kaushik; Mohan Ned

来源：IEEE Transactions on Power Electronics, 2014, 29(8): 4007-4016.

DOI：10.1109/TPEL.2013.2293112

• AC-DC conversion
• bidirectional power flow
• high-frequency transformer

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.

• 出版日期2014-8