An Adaptive Proportional Feedforward Scheme for LCL-Type Grid-Connected Inverter

被引：0
|
作者：
Qin, Kuang [1 ]
Wang, Wentao [2 ]
Wang, Xuehua [1 ]
He, Yuying [1 ]
Ruan, Xinbo [1 ]
Liu, Fuxin [3 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Adv Electromagnet Engn & Technol, Wuhan, Peoples R China
[2] Wuhan Second Ship Design & Res Inst, Wuhan, Peoples R China
[3] Nanjing Univ Aeronaut & Astronaut, Jiangsu Key Lab New Energy Generat & Power Conver, Nanjing, Peoples R China
来源：
2020 THIRTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2020) | 2020年
基金：
中国国家自然科学基金;
关键词：
grid-connected inverter; LCL filter; grid impedance; adaptive feedforward scheme;
D O I：
10.1109/apec39645.2020.9124362
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Feedforward scheme of point of common coupling (PCC) voltage has been widely applied in grid-connected inverters to improve the harmonic suppression ability. However, when connected to weak grids, the variation of grid impedance poses a challenge to the system stability. Motivated by this, a new feedforward scheme with adaptive feedforward gain is proposed in this paper, which can retain strong harmonic suppression ability and guarantee high system robustness no matter in weak gird or in strong grid. Simulation and experimental results verify the effectiveness of the proposed control scheme.
引用
收藏
页码：3287 / 3292
页数：6
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