A Feedfoward Scheme to Improve System Stability in Grid-connected Inverter with LCL Filter

被引：0
|
作者：
Zou, Changyue [1 ]
Liu, Bangyin [1 ]
Duan, Shanxu [1 ]
Li, Rui [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Coll Elect & Elect Engn, State Key Lab Adv Elect Engn & Technol, Wuhan 430074, Peoples R China
来源：
2013 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2013年
关键词：
DESIGN;
D O I：
暂无
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：
This paper presents a feedforward scheme to improve system stability in grid-connected inverter with LCL filter. It is found that the delay time in feedforward path has a significant impact on system stability when the converter-side current is used for feedback control and capacitor voltage is used for feedforward control. Theoretical analysis is presented to explain the instability mechanism. A delay suppression method is then proposed to improve system stability margin. A single-phase inverter laboratory prototype is used to verify the theoretical analysis.
引用
收藏
页码：4476 / 4480
页数：5
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