Investigation of Grid Voltage Sampling Distortion Effects on Feedforward Control in LCL Grid-Connected Inverters

被引：0

作者：

Yin, Quan ^{[1
]}

Liu, Jian ^{[1
]}

Luo, Hui ^{[1
]}

Wang, Qingyi ^{[2
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Automat, Key Lab, Educ Minist Image Proc & Intelligent Control, Wuhan 430074, Hubei, Peoples R China

[2] China Univ Geosci Wuhan, Sch Automat, Wuhan 430074, Hubei, Peoples R China

来源：

2015 CHINESE AUTOMATION CONGRESS (CAC) | 2015年

关键词：

LCL filter; grid voltage distortion; feedforward control; zero-sequence component; SYSTEMS;

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：

This paper proposed an inner current loop control method for a grid-connected inverter with a LCL filter, which used the inverter side current as feedback parameter. Due to the sensitivity of grid current to grid voltage distortion, the grid voltage feedforward schemes were utilized to solve this problem. Nevertheless, the sampling distortion of grid voltage will bring about the distortion of grid current. The distortions in the three-phase grid currents caused by the zero-sequence components in the grid voltage feedforward control were analyzed. Furthermore, two different approaches converting line voltages to phase voltages were investigated. In the end simulation and experiment results verify that the analysis is valid.

引用

页码：1303 / 1309

页数：7

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