Decentralized control for parallel operation of distributed generation inverters using resistive output impedance

被引:824
作者
Guerrero, Josep M. [1 ]
Matas, Jose
Garcia de Vicuna, Luis
Castilla, Miguel
Miret, Jaume
机构
[1] Univ Politecn Cataluna, Escola Univ Engn Tecn Ind Barcelona, Dept Engn Sist Automat & Informat Ind, E-08036 Barcelona, Spain
[2] Univ Politecn Cataluna, Dept Engn Elect, E-08036 Barcelona, Spain
关键词
distributed generation (DG); droop method; inverters; microgrids; LOAD; STRATEGY; SYSTEMS;
D O I
10.1109/TIE.2007.892621
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, a novel wireless load-sharing controller for islanding parallel inverters in an ac-distributed system is proposed. This paper explores the resistive output impedance of the parallel-connected inverters in an island microgrid. The control loops are devised and analyzed, taking into account the special nature of a low-voltage microgrid, in which the line impedance is mainly resistive and the distance between the inverters makes the control intercommunication between them difficult. In contrast with the conventional droop-control method, the proposed controller uses resistive output impedance, and as a result, a different control law is obtained. The controller is implemented by using a digital signal processor board, which only uses local measurements of the unit, thus increasing the modularity, reliability, and flexibility of the distributed system. Experimental results are provided from two 6-kVA inverters connected in parallel, showing the features of the proposed wireless control.
引用
收藏
页码:994 / 1004
页数:11
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