Control and Efficiency Optimization of Dual-Active-Bridge DC/DC Converter

被引：0

作者：

Wen, Huiqing ^{[1
,2
]}

Chen, Jie ^{[1
]}

机构：

[1] Xian Jiaotong Liverpool Univ, Dept Elect & Elect Engn, Suzhou, Peoples R China

[2] Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing, Peoples R China

来源：

2016 IEEE INTERNATIONAL CONFERENCE ON POWER ELECTRONICS, DRIVES AND ENERGY SYSTEMS (PEDES) | 2016年

关键词：

Backflow power; extended-phase-shift (EPS); peak current; efficiency; DC-DC CONVERTER; DISTRIBUTED POWER-SYSTEMS; DESIGN;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Bidirectional isolated DC-DC converters such as Dual Active Bridge (DAB) converters are key components for the solid-state transformer (SST) applications. However, the efficiency of DAB converter with the traditional control, namely Single-Phase-Shift (SPS), is very low due to high circulating current. In this paper, the power flow characteristics of DAB converter is analyzed and then the expressions for the backflow power are obtained. In this paper, extended-phase-shift (EPS) control is adopted to minimize the backflow power. A comprehensive comparison of EPS and SPS is conducted in terms of the transmission power, backflow power and peak current. Meanwhile, the design of the closed-loop control with EPS is presented. Finally, in order to confirm the correctness of proposed control strategy, a 20 kHz 1kW DAB prototype controlled by TMS320F28335 DSP was built and main test results were presented.

引用

页数：6

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