Research on LCL filter considering grid impedance

Author:

Wu L F,Zhang C Z

Abstract

Abstract Due to the large amount of access to distributed energy, the grid usually exhibits weak grid characteristics, which puts higher demands on the inverter. The use of LCL filters in photovoltaic grid-connected systems is beneficial to suppress high-frequency switching harmonic currents from entering the grid. However, the LCL filter increases the system order and the system stability is also affected by the grid impedance. In this paper, the non-isolated PV grid-connected inverter based on LCL filtering is studied, and the effects of grid impedance on system stability, LCL filter harmonic suppression and LCL filter parameter optimization design are studied. The influence of grid impedance on system stability is analyzed in detail. The simulation results verify the correctness of the research.

Publisher

IOP Publishing

Subject

General Engineering

Reference14 articles.

1. Photo-voltaic power state of the art & future trends;Cai;Power Electron.,2007

2. Grid-connection characteristics of large-scale photovoltaic power station and its low-carbon operation and control technology;Ai;Power Syst. Technol.,2013

3. Simplified feedback linearization control of three-phase photovoltaic inverter with an LCL filter;Bao;IEEE T. Power Electron.,2013

4. Overview of control and grid synchronization for distributed power generation systems;Blaabjerg;IEEE T. Ind. Electron.,2006

5. The progress and development trend of the DC injection issue in PV grid-connected systems;Lin;Power Syst. Pro. Contr.,2012

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3