Double Closed-Loop Control Strategy of LCL Three-Phase Grid-Connected Inverter

被引：0
作者：
Liu, Yitao [1 ]
Jin, Dianheng [1 ]
Wang, Huaizhi [1 ]
Wang, Guibin [1 ]
Peng, Jianchun [1 ]
Yin, Shan [2 ]
机构：
[1] Shenzhen Univ, Coll Mechatron & Control Engn, Shenzhen, Peoples R China
[2] China Acad Engn Phys, Microsyst & Terahertz Res Ctr, Chengdu, Sichuan, Peoples R China
来源：
IECON 2017 - 43RD ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY | 2017年
关键词：
LCL filter; three-phase grid-connected inverter; double closed-loop current control; damping; THD; ACTIVE RECTIFIER; VOLTAGE-SOURCE; FILTER; DESIGN;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Grid-connected inverter is an important part of the grid-connected system. Compared with the traditional L or LC filter, LCL filter has a better high-frequency harmonic attenuation performance. However, LCL filter has resonant peak, which has a great influence on the stability of the system. This paper first analyzes the effect of passive damping method on the resonance peak; then a double closed-loop control strategy with the inner loop of capacitor current and the outer loop of grid current is introduced; finally, the LCL three-phase grid-connected inverter with double-loop current control significantly reduces the Total Harmonic Distortion (THD), which verifies the feasibility of parameters design scheme of control strategy.
引用
收藏
页码：1107 / 1112
页数：6
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