Flexible Power Regulation and Current-Limited Control of the Grid-Connected Inverter Under Unbalanced Grid Voltage Faults

被引：193

作者：

Guo, Xiaoqiang ^{[1
]}

Liu, Wenzhao ^{[1
]}

Lu, Zhigang ^{[1
]}

机构：

[1] Yanshan Univ, Key Lab Power Elect Energy Conservat & Motor Driv, Dept Elect Engn, Qinhuangdao 066004, Peoples R China

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2017年 / 64卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Distributed generation; fault ride through (FRT); grid fault; inverter; FILTER; CONVERTER;

D O I：

10.1109/TIE.2017.2669018

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The grid-connected inverters may experience excessive current stress in case of unbalanced grid voltage fault ride through (FRT), which significantly affects the reliability of the power supply system. In order to solve the problem, the inherent mechanisms of the excessive current phenomenon with the conventional FRT solutions are discussed. The quantitative analysis of three-phase current peak values is conducted and a novel current-limited control strategy is proposed to achieve the flexible active and reactive power regulation and successful FRT in a safe current operation area with the aim of improving the system reliability under grid faults. Finally, the simulation and experiments of traditional and proposed FRT solutions are carried out. The results verify the effectiveness of the proposed method.

引用

页码：7425 / 7432

页数：8

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