A Sliding Mode Disturbance Observer-Based Approach for Grid Connected Wind Energy Systems

被引：3
|
作者：
Morshed, Mohammad Javad [1 ]
Sardoueinasab, Zahra [1 ]
Fekih, Afef [1 ]
机构：
[1] Univ Louisiana Lafayette, Dept Elect & Comp Engn, Lafayette, LA 70504 USA
来源：
2019 AMERICAN CONTROL CONFERENCE (ACC) | 2019年
关键词：
ITSMC; disturbance observer; DFIG; fuzzy logic; voltage sag; VOLTAGE; TURBINES;
D O I：
10.23919/acc.2019.8814479
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
An observer based-sliding mode approach is proposed in this paper for a (DFIG)-based wind energy system directly connected to the grid. The design aims at maintaining the current fluctuations resulting from grid faults within acceptable ranges and ensuring robustness to system uncertainties. An integral terminal sliding mode disturbance observer (ITSMDO) was designed first to estimate system uncertainties. Then an ITSMC approach was derived to steer the rotor currents to their desired values. A fuzzy logic approach was considered to auto-tune the controller gains. System stability and finite time convergence were established using the Lyapunov theory. The effectiveness of the proposed approach was validated under severe grid faults and in the presence of parameter variations.
引用
收藏
页码：5719 / 5724
页数：6
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