一种用于提高无线并联逆变器均流性能的控制方法  

A Control Method to Improve the Performance of Parallel-connected Inverters with No Control Interconnections

作　　者：姚玮[1] 高明智[1] 陈敏[1] 钱照明[1] 

机构地区：[1]浙江大学

出　　处：《电力电子》2008年第4期24-26,共3页Power Electronics

摘　　要：本文基于传统的无互线逆变器并联下垂法,提出一种用于提高逆变器均流性能的控制方法。同时本文考虑了连线阻抗和逆变器输出阻抗,分析了逆变器并联系统的有功环流和无功环流,本文提出的控制方法可以减小下垂法的频率和幅值的波动幅度,增加系统输出的稳定性,并提高系统的动态和静态环流抑制能力。仿真和实验结果均验证了该方案的良好性能。Based on the traditional droop method, we present a wireless load sharing controller to improve the performance of parallel-connected inverters in this paper. It also explores the control of active and reactive circulating current through the analysis of the proposed parallel system model taking the over ratio of the line impedance into account. And the control strategy proposed can avoid the large drop of the output voltage amplitude and frequency through the adaptive droop coefficient. It also can enhance dynamic performance of parallel systems. Simulation and experimental results are all reported, confirming the validity of the proposed control technique.

关 键 词：无互联线并联 逆变器 输出阻抗 环流 下垂法 

分 类 号：TM464[电气工程—电器] TN86[电子电信—信息与通信工程]