A Quasi-Two-Stage Isolated Bidirectional Buck-DAB Converter for Wide Input Voltage Range

被引：11

作者：

Lu, Zhengmei ^{[1
,2
]}

Xu, Guo ^{[1
,2
]}

Xiong, Wenjing ^{[1
,2
]}

Sun, Yao ^{[1
,2
]}

Su, Mei ^{[1
,2
]}

机构：

[1] Cent South Univ, Sch Automat, Changsha 410083, Peoples R China

[2] Hunan Prov Key Lab Power Elect Equipment & Grid, Changsha 410083, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2023年 / 38卷 / 02期

基金：

美国国家科学基金会;

关键词：

Voltage; Zero voltage switching; Topology; Modulation; Inductors; Voltage control; Power electronics; Bidirectional dc-dc converter; dual active bridge (DAB); quasi-two-stage; LLC RESONANT CONVERTER; DC-DC CONVERTER; BRIDGE; ZVS;

D O I：

10.1109/TPEL.2022.3208105

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this article, a quasi-two-stage buck-DAB (QBDAB) converter is proposed for improving the performance of the conventional dual active bridge (DAB) solution under a wide voltage range. For the proposed QBDAB converter, the DAB can always work under voltage matching conditions for wide voltage range applications, and the gain is adjusted through the added front-end circuit. The front-end circuit is similar to a buck converter, while only part of the transmission power flows through the circuit, which could also reduce the burden of achieving ZVS of the front-end circuit. Therefore, compared with the traditional two-stage buck-DAB converter solution, the related loss for the buck circuit can be reduced. The working principle, power transfer characteristics, and full load range ZVS design are analyzed deeply in this article. A detailed comparison of the QBDAB and other related combined buck+DAB topologies is also presented. Finally, the effectiveness of the proposed QBDAB is verified through experimental results from a 1kW prototype.

引用

页码：1384 / 1390

页数：7

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