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Article(id=1321482013203353758, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321481963769287353, articleNumber=null, orderNo=null, doi=10.13234/j.issn.2095-2805.2025.3.280, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1648828800000, receivedDateStr=2022-04-02, revisedDate=1659369600000, revisedDateStr=2022-08-02, acceptedDate=1661097600000, acceptedDateStr=2022-08-22, onlineDate=1792995463896, onlineDateStr=2026-10-26, pubDate=1748534400000, pubDateStr=2025-05-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792995463896, onlineIssueDateStr=2026-10-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792995463896, creator=13701087609, updateTime=1792995463896, updator=13701087609, issue=Issue{id=1321481963769287353, tenantId=1146029695717560320, journalId=1146031654075715584, year='2025', volume='23', issue='3', pageStart='1', pageEnd='372', issueExtLink='null', onlineDate='null', pubDate='1748534400000', pubDateStr='2025-05-30', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792995452109, creator='13701087609', updateTime=1792995578032, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1321482491983147168, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321481963769287353, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1321482491983147169, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321481963769287353, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=280, endPage=289, ext={EN=ArticleExt(id=1321482013480177823, articleId=1321482013203353758, tenantId=1146029695717560320, journalId=1146031654075715584, language=EN, title=Delay Compensation Strategy for Widening Effective Damping Zone of LCL Grid-connected Inverter, columnId=1152281492488549232, journalTitle=Journal of Power Supply, columnName=DC-AC Inverters, runingTitle=null, highlight=null, articleAbstract=

In an LCL grid-connected inverter system under digital control, the control delay reduces the performance of a capacitive current feedback active damping method for suppressing resonance peaks, i.e., the effective damping zone is only 0–fs/6 (where fs is the sampling frequency), which seriously affects the system stability. Aimed at this problem, a delay compensation strategy is proposed. First, a delay compensation link is added to the forward path to increase the system boundary frequency. Then, the stable conditions for the system after compensation are deduced according to the stability criterion. Finally, the capacitive current feedback coefficient is designed under the new stable conditions. The analysis results show that the proposed strategy can widen the effective damping zone to 0–0.4fs, thereby expanding the selection range of the filter resonant frequency fr, reducing the inverter’s design cost and improving the system’s adaptability to a wide range of grid impedance changes. Simulation and experimental results show that the proposed strategy widens the stable operation zone of the system and improves its poor stability when the resonant frequency fr is equal to or more than fs/6 under the weak grid.

, authors=Xueyi ZHANG1, Dong ZHANG1, 2, Shengqing LI1, 2, authorsList=Xueyi ZHANG, Dong ZHANG, Shengqing LI, authorCompany=null, correspAuthors=Shengqing LI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1321482015506026658, articleId=1321482013203353758, tenantId=1146029695717560320, journalId=1146031654075715584, language=CN, title=拓宽LCL型并网逆变器有效阻尼区的延时补偿策略, columnId=1149829848698454020, journalTitle=电源学报, columnName=DC-AC逆变器, runingTitle=null, highlight=null, articleAbstract=

在数字控制LCL型并网逆变器系统中，控制延时使得电容电流反馈有源阻尼法抑制谐振尖峰的性能降低，有效阻尼区仅为0~fs/6（fs为采样频率），严重影响系统的稳定性。针对此问题，提出1种延时补偿策略，首先在前向通路中加入延时补偿环节提高系统分界频率，然后根据稳定判据详细推导出补偿后系统的稳定条件，最后在新稳定条件的约束下设计电容电流反馈系数。分析结果表明，所提策略可将有效阻尼区拓宽至0~0.4fs，扩大滤波器谐振频率fr的选取范围，降低逆变器的设计成本，提高系统对宽范围电网阻抗变化的适应能力。仿真与实验结果表明，所提策略拓宽了系统稳定运行区域，改善了弱电网下谐振频率fr≥fs/6时系统稳定性差的问题。

, authors=张学毅1, 张栋1, 2, 李圣清1, 2, authorsList=张学毅, 张栋, 李圣清, authorCompany=null, correspAuthors=李圣清, authorNote=

张学毅（1966—　），男，硕士，教授。研究方向：电工理论与新技术。E-mail：。

张栋（1997—　），男，硕士研究生。研究方向：并网逆变器控制技术。E-mail：。

, correspAuthorsNote=
李圣清（1961—　），男，通信作者，博士，教授。研究方向：电能质量与控制技术，电力电子系统控制技术。E-mail：。
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张学毅（1966—　），男，硕士，教授。研究方向：电工理论与新技术。E-mail：。

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张学毅（1966—　），男，硕士，教授。研究方向：电工理论与新技术。E-mail：。

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张栋（1997—　），男，硕士研究生。研究方向：并网逆变器控制技术。E-mail：。

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张栋（1997—　），男，硕士研究生。研究方向：并网逆变器控制技术。E-mail：。

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拓宽LCL型并网逆变器有效阻尼区的延时补偿策略
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张学毅 1 , 张栋 1, 2 , 李圣清 1, 2
电源学报 | DC-AC逆变器 2025,23(3): 280-289
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电源学报 |DC-AC逆变器 2025 , 23 (3) : 280 -289
拓宽LCL型并网逆变器有效阻尼区的延时补偿策略
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张学毅1 , 张栋1, 2 , 李圣清1, 2
作者信息
  • 1.湖南工业大学电气与信息工程学院，株洲　412007
  • 2.光伏微电网智能控制技术湖南省工程研究中心，株洲　412007
通讯作者:
李圣清（1961—　），男，通信作者，博士，教授。研究方向：电能质量与控制技术，电力电子系统控制技术。E-mail：。
作者简介:

张学毅（1966—　），男，硕士，教授。研究方向：电工理论与新技术。E-mail：。

张栋（1997—　），男，硕士研究生。研究方向：并网逆变器控制技术。E-mail：。

Delay Compensation Strategy for Widening Effective Damping Zone of LCL Grid-connected Inverter
Xueyi ZHANG1 , Dong ZHANG1, 2 , Shengqing LI1, 2
Affiliations
  • 1.School of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China
  • 2.Hunan Engineering Research Center for Intelligent Control Technology of Photovoltaic Microgrid, Zhuzhou 412007, China
出版时间: 2025-05-30 doi: 10.13234/j.issn.2095-2805.2025.3.280
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在数字控制LCL型并网逆变器系统中，控制延时使得电容电流反馈有源阻尼法抑制谐振尖峰的性能降低，有效阻尼区仅为0~fs/6（fs为采样频率），严重影响系统的稳定性。针对此问题，提出1种延时补偿策略，首先在前向通路中加入延时补偿环节提高系统分界频率，然后根据稳定判据详细推导出补偿后系统的稳定条件，最后在新稳定条件的约束下设计电容电流反馈系数。分析结果表明，所提策略可将有效阻尼区拓宽至0~0.4fs，扩大滤波器谐振频率fr的选取范围，降低逆变器的设计成本，提高系统对宽范围电网阻抗变化的适应能力。仿真与实验结果表明，所提策略拓宽了系统稳定运行区域，改善了弱电网下谐振频率fr≥fs/6时系统稳定性差的问题。

控制延时  /  电容电流反馈  /  有效阻尼区  /  延时补偿

In an LCL grid-connected inverter system under digital control, the control delay reduces the performance of a capacitive current feedback active damping method for suppressing resonance peaks, i.e., the effective damping zone is only 0–fs/6 (where fs is the sampling frequency), which seriously affects the system stability. Aimed at this problem, a delay compensation strategy is proposed. First, a delay compensation link is added to the forward path to increase the system boundary frequency. Then, the stable conditions for the system after compensation are deduced according to the stability criterion. Finally, the capacitive current feedback coefficient is designed under the new stable conditions. The analysis results show that the proposed strategy can widen the effective damping zone to 0–0.4fs, thereby expanding the selection range of the filter resonant frequency fr, reducing the inverter’s design cost and improving the system’s adaptability to a wide range of grid impedance changes. Simulation and experimental results show that the proposed strategy widens the stable operation zone of the system and improves its poor stability when the resonant frequency fr is equal to or more than fs/6 under the weak grid.

Control delay  /  capacitive current feedback  /  effective damping zone  /  delay compensation
张学毅, 张栋, 李圣清. 拓宽LCL型并网逆变器有效阻尼区的延时补偿策略. 电源学报, 2025 , 23 (3) : 280 -289 . DOI: 10.13234/j.issn.2095-2805.2025.3.280
Xueyi ZHANG, Dong ZHANG, Shengqing LI. Delay Compensation Strategy for Widening Effective Damping Zone of LCL Grid-connected Inverter[J]. Journal of Power Supply, 2025 , 23 (3) : 280 -289 . DOI: 10.13234/j.issn.2095-2805.2025.3.280
基金
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  • 国家自然科学基金资助项目(51977072)
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2025年第23卷第3期
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文章信息
doi: 10.13234/j.issn.2095-2805.2025.3.280
  • 接收时间：2022-04-02
  • 首发时间：2026-10-26
  • 出版时间：2025-05-30
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出版历史
  • 收稿日期：2022-04-02
  • 修回日期：2022-08-02
  • 录用日期：2022-08-22
基金
National Natural Science Foundation of China(51977072)
国家自然科学基金资助项目(51977072)
作者信息
    1.湖南工业大学电气与信息工程学院，株洲　412007
    2.光伏微电网智能控制技术湖南省工程研究中心，株洲　412007

通讯作者:

李圣清（1961—　），男，通信作者，博士，教授。研究方向：电能质量与控制技术，电力电子系统控制技术。E-mail：。
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https://castjournals.cast.org.cn/joweb/dyxb/CN/10.13234/j.issn.2095-2805.2025.3.280
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2种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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