Coordinate Control of Power Fluctuation Suppression and Current Balance Under Unbalanced Voltage Conditions

被引：0
|
作者：
Wang Y. [1 ]
Ou M. [1 ]
Chen Y. [2 ]
Chen Z. [1 ]
Xiao Z. [1 ]
Xu Z. [1 ]
机构：
[1] State Grid Hunan Electric Power Corporation Limited Economical & Technical Research Institute, Changsha, 410004, Hunan Province
[2] National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha, 410082, Hunan Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2017年 / 37卷 / 23期
基金：
中国国家自然科学基金;
关键词：
Coordinate control; Current quality; Grid-connected inverter; Power control; Voltage unbalance;
D O I：
10.13334/j.0258-8013.pcsee.162639
中图分类号：
学科分类号：
摘要：
The output power fluctuation and current quality of the grid-connected inverter under the unbalanced voltage environment are opposite to each other. First, the paper deduces the internal connection between the power oscillations and the current quality under unbalanced grid faults, the key factors that affect power fluctuation and current quality were analyzed. Then, a flexible power control strategy in stationary reference frame was proposed, and the power oscillations and the current quality can be controlled flexibly by changing the harmonic components in the output current. The proposed control strategy is convenient to realize without the need for positive/negative sequence extraction calculation, low pass filter or notch filter. Finally, the correctness of the proposed power control strategy is verified by simulation and experiment. © 2017 Chin. Soc. for Elec. Eng.
引用
收藏
页码：6981 / 6987
页数：6
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