基于虚拟电阻控制环的并联逆变器简化控制方法  

A Simplified Control Method of Parallel Inverters Based on Virtual Impedance Control Loop

作　　者：温春雪[1] 李正熙[1] 

机构地区：[1]北方工业大学北京市变频技术工程研究中心,北京100144

出　　处：《电工技术学报》2012年第6期63-68,共6页Transactions of China Electrotechnical Society

基　　金：北京市自然科学基金资助项目(3122015)

摘　　要：对于整个系统的扩展性和可靠性来说,几个小功率逆变器的并联运行比单个大功率逆变器运行要具备更多的优势。针对逆变器的并联运行,本文提出了一种基于虚拟电阻控制环的简化控制方法,该方法可以均衡无互联通讯线路的各逆变器的电流分布,进而抑制并联逆变器内部的环流。为了验证基于虚拟电阻控制环的简化控制方法,本文建立了由两个逆变器组成的并联拓扑实验电路,最后通过仿真和实验方法表明了本文所提控制方法的性能。For the scalability and reliability of the whole system, tt has more auwuL~ several small power inverters parallel than a single high power inverter. This paper proposes a simplified control method based on virtual impedance control loop for the inverters parallel operation. It can balance the current distribution of individual inverters without communication lines, and restrain the internal circulating current. In order to verify the proposed method, the parallel topology of two inverters is introduced in this paper, and the performance of this method is also verified by simulations and experiments.

关 键 词：逆变器 虚拟电阻 并联 环流 

分 类 号：TM464[电气工程—电器]