Extended-Phase-Shift Control of Isolated Bidirectional DC-DC Converter for Power Distribution in Microgrid

被引：639

作者：

Zhao, Biao ^{[1
]}

Yu, Qingguang ^{[1
]}

Sun, Weixin ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China

[2] N China Power Engn Co Ltd, China Power Engn Consulting Grp Corp, Beijing 100084, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2012年 / 27卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Bidirectional DC/DC converter; current stress; microgrid; phase-shift control; power distribution; power flow; ENERGY-STORAGE SYSTEM; CONTROL STRATEGY; DC/DC CONVERTER;

D O I：

10.1109/TPEL.2011.2180928

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：

This paper points out a phenomenon of power back-flow in traditional phase-shift (TPS) control of isolated bidirectional full-bridge DC-DC converter (IBDC), and analyzes the effects which backflow power act on power circulating flow and current stress. On this basis, the paper proposes a novel extended-phase-shift (EPS) control of IBDC for power distribution in microgrid. Compared with TPS control, EPS control not only expands regulating range of transmission power and enhances regulating flexibility, but also reduces current stress and improves the system efficiency. The operation principle of EPS control and the operation modes of IBDC are analyzed in the paper. By establishing mathematical models of transmission power, backflow power, and current stress, the paper comparatively analyzes control performances of TPS and EPS control. At last, experimental results verify the excellent performance of EPS control and correctness of the theoretical analysis.

引用

页码：4667 / 4680

页数：14

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