全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电网技术  2014 

基于功率前馈的光伏并网控制方法及稳定性分析

DOI: 10.13335/j.1000-3673.pst.2014.09.021, PP. 2449-2454

Keywords: 光伏并网,逆变器,功率前馈,双闭环,波特图

Full-Text   Cite this paper   Add to My Lib

Abstract:

针对光伏并网逆变器,提出了一种基于功率前馈的电压电流双环比例积分(proportionalintegral,PI)控制方法,电压外环实现逆变直流侧的电压稳定,内环追踪交流侧并网电流。在并网电流指令中,引入功率前馈环节,加快系统响应速度,减少直流电压的稳态误差。根据双闭环系统的波特图和根轨迹图,分析了系统在某区域范围内的稳定性。针对功率前馈环节,仿真对比了有无功率前馈对系统性能的影响。搭建了2kW的单相光伏并网发电平台,并对系统进行了性能测试。仿真与实验结果表明系统能长期稳定可靠运行且能快速响应外界变化,并网电流畸变率为2.8%。该系统已成功应用到光伏建筑一体化(buildingintegratedphotovoltaic,BIPV)系统中,具有较强的工程实践价值。

References

[1]  Yaosuo,Chang Liuchen,Sren B K,et al.Topologies of single-phase inverters for small distributed power generators:an overview[J].IEEE Trans on Power Electronics,2004,19(5):1305-1311.
[2]  Dongran,Chen Shuyong,Ma Min,et al.A review on models for photovoltaic generation system[J].Power System Technology,2011,35(8):47-52(in Chinese).
[3]  F,Teodorescu R,Liserre M,et al.Overview of control and grid synchronization for distributed power systems[J].IEEE Trans on Industrial Electronics,2006,53(5):1398-1409.
[4]  J M,Franquelo L G,Bialasiewicz J,et al.Power-electronic systems for the grid integration of renewable energy sources:a survey[J].IEEE Trans on Industrial Electronics,2006,53(4):1002-1016.
[5]  Y,Xing Y.Design and analysis of three-phase reversible high-power-factor correction based on predictive current controller [J].IEEE Trans on Industrial Electronics,2008,55(12):4391-4397.
[6]  kW光伏并网系统优化控制与稳定性分析[J].电工技术学报,2008,23(11):116-122. Zhou Dejia,Zhao Zhengming,Yuan Liqiang,et al.optimum control and stability analysis for a 300kW photovoltaic grid-connected system [J].Transactions of China Electrotechnical Society,2008,23(11):116-122(in Chinese).
[7]  Qinglin,Guo Xiaoqiang,Wu Weiyang.Research on control strategy for single-phase grid-connected Inverter[J].Proceedings of the CSEE,2007,27(16):60-64(in Chinese).
[8]  Xu Zhiying,Xu Aiguo,Xie Shaojun.Dual-loop grid current control technique for grid-connected inverter using an LCL filter [J].Proceedings of the CSEE,2009,29(27):36-41(in Chinese).
[9]  Liu Fei,Zha Xiaoming,Zhou Yan,et al.Research on grid-connected strategy combining pole-assignment and repetitive control in three-phase photovoltaic system[J].Transactions of China Electrotechnical Society,2008,23(12):130-136(in Chinese).
[10]  T F,Chang C H,Chen Y H,et al.A fuzzy-logic-controlled single-stage converter for PV-powered lighting system applications [J].IEEE Trans on Power Electronics,2000,47(2):287-296.
[11]  Xunjiang,Chao Qin.The research of photovoltaic grid-connected inverter based on adaptive current hysteresis band control scheme[C]// The First International Conference on Sustainable Power Generation and Supply.Nanjing:IEEE,2009:1-8.
[12]  B,Duan S,Cai T.Photovoltaic DC-building-module-based BIPV system:concept and design considerations[J].IEEE Trans on Power Electronics,2011,26(5):1418-1429.
[13]  Y M,Wu H C,Chen Y C,et al.The AC line current regulation strategy for the grid-connected PV system[J].IEEE Trans on Power Electronics,2010,25(1):209-218.
[14]  T,Hashimoto O,Kimura G.A novel high-performance utility-interactive photovoltaic inverter system[J].IEEE Trans on Power Electronics,2003,18(2):704-711.
[15]  Jiang Shigong,Wang Wei,Wang Panbao,et al.Power-feedforward- based control strategy of grid-connected single-phase PV system [J].Electric Power Automation Equipment,2010,30(6):16-22(in Chinese).

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133