Fault Ride Through Control of Three-phase grid-connected Inverter Under Harmonic and Unbalanced Grid Voltage Conditions

被引：0
|
作者：
Guo X. [1 ]
Liu W. [1 ]
机构：
[1] Key Lab of Power Electronics for Energy Conservation and Motor Drive of Hebei Province (College of Electrical Engineering, Yanshan University), Qinhuangdao, 066004, Hebei Province
来源：
| 1600年 / Chinese Society for Electrical Engineering卷 / 37期
基金：
中国国家自然科学基金;
关键词：
Fault recovery; Fault ride through; Grid-connected inverter; Harmonic and unbalanced grid voltage;
D O I：
10.13334/j.0258-8013.pcsee.160977
中图分类号：
学科分类号：
摘要：
The grid code requires that the grid-connected inverter inject powers to achieve the voltage recovery during grid faults. However, due to the grid harmonics, the power injection through the line impedance may affect the power quality at the point of common coupling and reduce the system reliability. In order to solve the problem, the relationship between grid harmonics and PCC voltage was analyzed. Then a new voltage recovery control strategy is proposed. It adjusts the control coefficients of positive/negative sequence and harmonics to improve the voltage quality. Finally, the experimental tests of the conventional and proposed control solutions were carried out. The experimental results verified the effectiveness of the proposed method. © 2017 Chin. Soc. for Elec. Eng.
引用
收藏
页码：5118 / 5124
页数：6
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