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Dual‐active‐bridge DC–DC converter with auxiliary parallel networks for wide load range ZVZCS application.

Authors :
Tang, Yuanhong
Hu, Weihao
Chen, Zhangyong
Huang, Qi
Blaabjerg, Frede
Source :
IET Power Electronics (Wiley-Blackwell); Sep2020, Vol. 13 Issue 12, p2569-2579, 11p
Publication Year :
2020

Abstract

In this study, a wide load range zero‐voltage zero‐current switching (ZVZCS) dual‐active‐bridge DC–DC converter using auxiliary parallel networks is proposed. The outstanding feature of the proposed converter is that all of the switches are allowed to operate with zero‐voltage switching while four of the switches are allowed to operate with zero‐current switching, due to the use of two auxiliary parallel networks, which were paralleled to two active bridges, respectively. Furthermore, the circulating current losses can be reduced significantly by using unified boundary trapezoidal modulation method. Based on these merits, the proposed converter has some advantages for the wide range load variation applications with less circulating current losses. The operation principles, soft‐switching conditions and loss analyses comparison are given in this study. These benefits and characteristics mentioned above are verified from the experimental results by using a 1 kW prototype. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
17554535
Volume :
13
Issue :
12
Database :
Complementary Index
Journal :
IET Power Electronics (Wiley-Blackwell)
Publication Type :
Academic Journal
Accession number :
148144136
Full Text :
https://doi.org/10.1049/iet-pel.2019.0766