Decentralized Control for Parallel Operation of Distributed Generation Inverters Using Resistive Output Impedance
Decentralized Control for Parallel Operation of Distributed Generation Inverters Using Resistive Output Impedance
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DOI：
10.1109/epe.2005.219446
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发表时间：
2005-12
影响因子：
7.7
通讯作者：
J. Guerrero;N. Berbel;J. Matas;J. Sosa;J. Cruz;A. Alentorn
中科院分区：
文献类型：
--
作者：
J. Guerrero;N. Berbel;J. Matas;J. Sosa;J. Cruz;A. Alentorn
本文提出了一种适用于交流分布式系统孤岛并联逆变器的无线负荷分担控制器。本文研究了孤岛微电网并联逆变器的电阻输出阻抗。针对低压微电网线路阻抗以电阻阻抗为主、逆变器之间的距离使逆变器之间的控制通信困难等特点，设计并分析了控制回路。与传统的下垂控制方法相比，该控制器采用了电阻输出阻抗，从而获得了不同的控制律。该控制器采用数字信号处理板实现，仅使用单元的局部测量，从而增加了分布式系统的模块化、可靠性和灵活性。通过两个并联的6kva逆变器的实验结果，显示了所提出的无线控制的特点
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