薛瑞,许崇福,王江涛,张纬晨,白世军
XUE Rui,XU Chongfu,WANG Jiangtao,ZHANG Weichen,BAI Shijun

• 1:西安西电电力电子有限公司

摘要(Abstract)：

协调控制技术是保证直流微电网高效可靠运行的关键。目前业内更多关注基于两端口互联装置的简单直流微网的功率协调控制，而对多端口直流微网系统的协调控制较少涉及。提出了一种由光伏端、中低压直流端、负荷端等组成的多端口直流变换器的拓扑结构，分析了各端口运行特性、功率控制能力、运行模式及其转换方案，并通过MATLAB/Simulink平台进行了系统多模式切换及稳态运行仿真验证。分析结果表明：该控制方法能够实现多端口变换器的能量合理分配和直流电压的协调控制，保证了系统在不同模式下的可靠运行。
Coordinated control technology is pivotal to the efficient and reliable operation of DC microgrids. At present, the sector is more concerned with the coordinated power control of simple DC microgrids based on two-port interconnection devices in contrast to that of multi-port DC microgrids. A multi-port DC converter topology consisting of a PV terminal, medium and low voltage DC terminal, load terminal and so on is proposed, and the operating characteristics, power control capability and operation modes of each port and the switching scheme are analyzed. The multi-mode switching and steady-state operation simulation are verified on MATLAB/Simulink platform. The analysis results show that the control method can realize the reasonable energy distribution of multi-port converters and coordinated control of DC voltage and ensure the reliability of the system under different operating modes.

关键词(KeyWords)： 直流微电网;多端口直流变换器;协调控制
DC microgrid;multi-port DC converter;coordinated control

Abstract:

Keywords:

基金项目(Foundation): 中国西电集团揭榜挂帅项目（XE-2022XCP04）

作者(Author): 薛瑞,许崇福,王江涛,张纬晨,白世军
XUE Rui,XU Chongfu,WANG Jiangtao,ZHANG Weichen,BAI Shijun

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