Control Strategy for Flexible Microgrid Based on Parallel Line-Interactive UPS Systems

被引:581
作者
Guerrero, Josep M. [1 ]
Vasquez, Juan C. [1 ]
Matas, Jose [2 ]
Castilla, Miguel [2 ]
Garcia de Vicuna, Luis [2 ]
机构
[1] Tech Univ Catalonia, Dept Automat Control Syst & Comp Engn, Barcelona 08036, Spain
[2] Tech Univ Catalonia, Dept Elect Engn, Vilanova I La Geltru 08800, Spain
关键词
Distributed generation (DG); droop method; microgrids; uninterruptible power systems; DISTRIBUTED CONTROL; GENERATION; INVERTERS; OPERATION; CONVERTER; DESIGN;
D O I
10.1109/TIE.2008.2009274
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, the control strategy for a flexible microgrid is presented. The microgrid presented here consists of several line-interactive uninterruptible power supply (UPS) systems connected in parallel. The control technique is based on the droop method to avoid critical communications among UPS units. Thus, a flexible microgrid is obtained to operate in either grid-connected or islanded mode. A small-signal analysis is presented in order to analyze the system stability, which gives rules to design the main control parameters. Simulation and experimental results are presented, showing the feasibility of the proposed controller.
引用
收藏
页码:726 / 736
页数:11
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