三相LCL型并网逆变器的模型分析及解耦控制

包献文; 卓放; 谭佩喧

doi:10.7652/xjtuxb201402008

您当前的位置：

首页 >

文章列表页 >

三相LCL型并网逆变器的模型分析及解耦控制

更新时间：2025-07-09

- 三相LCL型并网逆变器的模型分析及解耦控制
- Model Analysis and Decouple Control Strategy of Three-Phase Grid-Connected Inverter with an LCL Filter
- 西安交通大学学报 2014年48卷第2期页码：44-49+110
- 作者机构：
  
  西安交通大学电气工程学院,西安,710049
- 作者简介：
- 基金信息：
  
  : 2013-05-13。作者简介: 包献文(1983—),女,博士生;卓放(通信作者),男,教授,博士生导师。基金项目: 国家自然科学基金资助项目(51177130);台达2011电力电子科教发展计划重点资助项目(DREK2011002)
- DOI：10.7652/xjtuxb201402008
  中图分类号： TM464
- 网络首发：2014-02-10，
  
  纸质出版：2014
- 稿件说明：
移动端阅览
包献文, 卓放, 谭佩喧. 三相LCL型并网逆变器的模型分析及解耦控制[J]. 西安交通大学学报, 2014,48(2):44-49+110.

Model Analysis and Decouple Control Strategy of Three-Phase Grid-Connected Inverter with an LCL Filter[J]. 2014, 48(2): 44-49+110.
包献文, 卓放, 谭佩喧. 三相LCL型并网逆变器的模型分析及解耦控制[J]. 西安交通大学学报, 2014,48(2):44-49+110. DOI： 10.7652/xjtuxb201402008.

Model Analysis and Decouple Control Strategy of Three-Phase Grid-Connected Inverter with an LCL Filter[J]. 2014, 48(2): 44-49+110. DOI： 10.7652/xjtuxb201402008.

摘要

建立了同步旋转坐标下三相LCL型并网逆变器的平均模型

提出该模型存在的谐振峰问题

并分析了阻尼电阻对系统谐振峰的影响

揭示了该模型的新特性。在同步旋转坐标系下

传统的单闭环控制方案无法实现D轴与Q轴的解耦

针对此问题提出了一种三相LCL型并网逆变器的解耦控制方案。该方案的基本思想是:应用框图等效变换原理

逐步消除每个滤波器元件D轴与Q轴之间的耦合项

并将所有解耦项移至控制器之后

得到系统总的解耦表达式

实现D轴与Q轴的完全解耦。仿真和实验结果表明:与传统的单闭环控制方案相比

提出的控制方法能有效解决D轴与Q轴的耦合问题

实现有功功率与无功功率的独立控制

且系统具有良好的动态响应特性

可为新能源并网逆变器的精准功率控制提供技术保障。

Abstract

The average model of three-phase LCL-type grid-connected inverter in synchronous reference frame is deduced and the existing resonant peaks are emphasized. The influence of damping resistances on resonance peaks is analyzed to reveal some new characteristics of the average model. The conventional single closed-loop control method cannot completely eliminate the coupling terms between D-axis and Q-axis in synchronous reference frame. To break down this limitation

a decouple control strategy is proposed for the three-phase grid-connected inverter with an LCL filter. The essence of the proposed decouple control strategy is to eliminate each coupling term of the LCL filter between D-axis and Q-axis gradually by equivalent transformation of block diagram

then to realize the decoupling process by moving all the decoupling items together to the controller. Simulation and experiments indicate that the proposed control strategy solves coupling problems more effectively compared with the conventional single closed-loop control

and realizes the active and reactive power control independently with satisfactory dynamic performance to technically support the exact power control in renewable energy generation.

关键词

Keywords

references

MOHAMED A, ZHENGMING Z. Grid-connected photovoltaic power systems: technical and potential problems: a review[J]. Renewable Sustainable Energy Reviews, 2010, 14(1): 112-129.

SOEREN B, JOHN K, FREDE B. A review of single-phase grid-connected inverters for photovoltaic modules[J]. IEEE Trans on Industry Applications, 2005, 41(5): 1292-1306.

SGCC. 光伏电站接入电网技术规定. Q/GDW 617-2011[S]. 北京: SGCC, 2011.

MARCO L, FREDE B, STEFFAN H. Design and control of an LCL-filter-based three-phase active rectifier[J]. IEEE Trans on Industry Applications, 2005, 41(5): 1281-1291.

SHEN Guoqiao, XU Dehong, CAO Luping, et al. An improved control strategy for grid connected voltage source inverters with an LCL filter[J]. IEEE Trans on Power Electronics, 2008, 23(4): 1899-1906.

ZHANG Xiaotian, SPENCER J W, GUERRERO J M. Small-signal modeling of digitally controlled grid-connected inverter with LCL filters[J]. IEEE Transactions on Industrial Electronics, 2013, 60(9): 3752-3765.

YANG Y, MEHRDAD K, VICTOR H. Modeling, control and implementation of three-phase PWM con- verters[J]. IEEE Trans on Power Electronics, 2003, 18(3): 857-864.

KHAJEHODDIN S, MASOUD K, PRAVEEN K, et al. A control design approach for three-phase grid-connected renewable energy resources[J]. IEEE Trans on Sustainable Energy, 2011, 2(4): 423-432.

HE Ning, XU Dehong, ZHU Ye, et al. Weighted average current control in a three-phase grid inverter with an LCL filter[J]. IEEE Transactions on Industrial Electronics, 2013, 28(6): 2785-2797.

EMILIO F, GABRIEL G, JESUS S, et al. Sensitivity study of the dynamics of three phase photovoltaic inverters with an LCL grid filter[J]. IEEE Transactions on Industrial Electronics, 2009, 56(3): 706-717.

张兴, 曹仁贤. 太阳能光伏并网发电及其逆变控制[M]. 北京: 机械工业出版社, 2010: 160-186.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

超临界水异常区域热力学特性研究

多工况下离心压气机叶轮-机匣一体联合设计优化

冷库水平空气幕热湿阻隔性能数值模拟研究

结构-语义-残差协同的图像压缩框架：面向隐私保护与高保真重建

电子级超纯氮深冷空分流程节能优化研究