DC component suppression of PV grid-connected inverter with improved PCI controller

被引：0

作者：

Gan T. ^{[1
]}

Liang L. ^{[1
]}

Chen Y. ^{[2
]}

Ding X. ^{[1
,3
]}

Chen Y. ^{[2
]}

机构：

[1] School of Electrical Engineering, Guangxi University, Nanning

[2] Shenzhen Yadiwei Technology Co., Ltd., Shenzhen

[3] Guangxi Vocational College of Water Resources and Electric Power, Nanning

来源：

Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2022年 / 43卷 / 07期

关键词：

Disturbance rejection; Inverters; Observers; Phase compensation; Proportional complex integral(PCI)controller; PV;

D O I：

10.19912/j.0254-0096.tynxb.2020-1223

中图分类号：

学科分类号：

摘要：

The DC component injection issues exist in the non-isolated PV grid-connected inverter application. In this paper, an novel DC component suppression strategy was proposed based on an improved PCI controller. Firstly, considering the DC component as system disturbance, a disturbance observer(DOB) was designed to observe the system's DC component in real- time, then a compensation method was designed for suppressing DC component based on the observed value of DC component. Secondly, a resonance complex coefficient PCI controller was substitute for the traditional PCI controller to obtain more phase margin. Finally, the feasibility and validity of the proposed strategy were verified by the simulation and experimental results. © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.

引用

页码：93 / 100

页数：7