Current Multi-loop Control Strategy for Grid-connected Inverter with LCL Filter

被引：0
|
作者：
Gao, Cheng [1 ]
Chen, Qihong [1 ]
Zhang, Liyan [1 ]
Quan, Shuhai [1 ]
机构：
[1] Wuhan Univ Technol, Sch Automat, Wuhan, Hubei, Peoples R China
来源：
PROCEEDINGS 2018 33RD YOUTH ACADEMIC ANNUAL CONFERENCE OF CHINESE ASSOCIATION OF AUTOMATION (YAC) | 2018年
基金：
中国国家自然科学基金;
关键词：
Grid-connected inverter; LCL filter; high frequency resonance; capacitance current feedback; repetitive dual closed-loop control; harmonic suppression;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A new multi current loop control strategy for LCL grid connected inverter is proposed. Repetitive PI double loop strategy which uses the feedback form of grid side current, utilizes PI control to improve the dynamic performance of the system, Then, repetitive control outer loop is used to achieve the high-performance control of the grid current, suppress voltage fluctuation and nonlinear load effect on the grid current and track the baseband signal without static error control. And the capacitor current feedback LCL inverter system aims at suppressing the high frequency resonance of LCL output filter; Theoretical analysis and experimental results show that LCL type grid connected inverter with this method has the advantages of high accuracy, good dynamic performance and strong anti-interference ability.
引用
收藏
页码：712 / 716
页数：5
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