Positive and negative sequence direct voltage control of DFIG under unbalanced voltage

被引：0
|
作者：
Chen, Sizhe [1 ]
Zhang, Miao [1 ]
Wu, Jie [2 ]
机构：
[1] School of Automation, Guangdong University of Technology, Guangzhou 510006, China
[2] Guangdong Key Laboratory of Clean Energy Technology, School of Electric Power, South China University of Technology, Guangzhou 510640, China
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2012年 / 33卷 / 07期
关键词：
Electric machine control - Voltage control - Asynchronous generators - Wind power - Electric power transmission networks - Electric fault currents - Energy conversion - Electric power system control;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A positive and negative sequence direct voltage control (DVC) scheme of doubly-fed induction generator (DFIG) was proposed to synchronize the wind energy conversion system based on DFIG to the power grid under unbalanced grid voltage. The controller is composed of a positive sequence DVC and a negative sequence DVC. The positive sequence DVC controls stator positive sequence voltages to follow grid positive sequence voltages, and the negative sequence DVC controls stator negative sequence voltages to follow grid negative sequence voltages. Simulation and experimental results indicated that the proposed positive and negative sequence DVC scheme effectively control the stator voltages of DFIG to accurately follow unbalanced grid voltages, which enables the DFIG to satisfy no-impact cutting-in condition under unbalanced grid voltage and guarantees the secure operation of both the wind energy conversion system and the power grid.
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页码：1080 / 1087
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