Decoupled control of active and reactive power for a grid-connected doubly-fed induction generator

被引：0

作者：

Guo, Jiahu ^{[1
]}

Cai, Xu ^{[1
]}

Gong, Youming ^{[1
]}

机构：

[1] Anhui Univ Sci & Technol, Dept Elect Engn, Huainai, Peoples R China

来源：

2008 THIRD INTERNATIONAL CONFERENCE ON ELECTRIC UTILITY DEREGULATION AND RESTRUCTURING AND POWER TECHNOLOGIES, VOLS 1-6 | 2008年

关键词：

DFIG; decoupled control; inverse system; Internal Model Control; fault ride through capability;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this paper, a novel control strategy by internal model control based on the inverse system theory is proposed for the DFIG, which guarantees a sufficient stability region in the state space, and decouples the active and reactive stator current allowing the independent control of the active power and reactive power of DFIG. First, a nonlinear mathematical model of DFIG is developed with state variables in d-q axis. Then the alpha order inverse system of DFIG is derived. Put the alpha order inverse system in front of the original system, a pseudo linear system can be obtained. The IMC (Internal Model Control) is used for the pseudo linear system. This control strategy is able to decouple the coupling effect of the d-q current control, and have good ability to ride through both symmetrical and unsymmetrical voltage sags. The simulation results verified the validity of the proposed control strategy.

引用

页码：2620 / 2625

页数：6

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