Adaptive sliding-mode voltage control for inverter operating in islanded mode in microgrid

被引:75
|
作者
Chen, Zhiyong [1 ]
Luo, An [1 ]
Wang, Huajun [1 ]
Chen, Yandong [1 ]
Li, Mingshen [1 ]
Huang, Yuan [1 ]
机构
[1] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
Chattering reduction; Islanded microgrid; Parallel inverters; Parametric perturbation; Robustness; Sliding-mode controller (SMC); COMPENSATION; DESIGN;
D O I
10.1016/j.ijepes.2014.10.054
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Harmonic current caused by nonlinear loads and parametric variations of output filter of inverters make popular proportional-integral-derivative (PID) voltage controller far beyond excellent performance in case of microgrid operating in islanded mode. Motivated by this limitation, this paper proposes an adaptive sliding-mode controller (ASMC) to enhance disturbance-rejection performance of control system of islanded parallel inverters. And adaptive algorithms are designed to observe external disturbances and internal perturbation so as to guarantee the globe robustness of control system of inverter. The switching gain of control input is designed to be a time-varying value which effectively reduces undesirable chattering of control input signal. Simulating and experimental results are presented that the total harmonic distortion, chattering, and steady-state error of output voltage of islanded parallel inverters are effectively reduced and the dynamic performances and the capability of perturbation rejection of control system of inverter are effectively enhanced. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:133 / 143
页数:11
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