A Modified LADRC-Based DC-Link Voltage Controller for Photovoltaic Grid-Connected Inverters

被引：11
|
作者：
Zhou, Xuesong [1 ]
Liu, Qian [1 ]
Ma, Youjie [1 ]
Li, Wei [1 ]
Xie, Bingjie [1 ]
机构：
[1] Tianjin Univ Technol, Sch Elect & Elect Engn, Tianjin Key Lab Control Theory & Applicat Complic, Tianjin 300384, Peoples R China
来源：
ELECTRONICS | 2021年 / 10卷 / 08期
基金：
中国国家自然科学基金;
关键词：
photovoltaic (PV) grid-connected system; dc-link voltage; linear active disturbance rejection control (LADRC); cascaded extended state observer; disturbance reconstruction; DISTURBANCE REJECTION CONTROL; TRACKING CONTROL; POWER; CONVERTER; IMPROVE; SYSTEMS; DESIGN;
D O I：
10.3390/electronics10080877
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
To enhance the robust stability of the dc-link voltage in the photovoltaic (PV) grid-connected system, a modified linear active disturbance rejection control (LADRC)-based regulation strategy is presented in this paper. The proposed control strategy is equipped with the cascaded extended state observer, which can supplement the disturbance information not estimated by the conventional one, thereby achieving a relatively fast and accurate disturbance reconstruction. The tracking performance and disturbance rejection performance of the modified LADRC are discussed and studied in the frequency domain. Finally, the experimental results are provided to verify the theoretical analysis.
引用
收藏
页数：17
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