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Article(id=1321482001694175820, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321481963769287353, articleNumber=null, orderNo=null, doi=10.13234/j.issn.2095-2805.2025.3.126, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1732896000000, receivedDateStr=2024-11-30, revisedDate=1739203200000, revisedDateStr=2025-02-11, acceptedDate=1741104000000, acceptedDateStr=2025-03-05, onlineDate=1792995461152, onlineDateStr=2026-10-26, pubDate=1748534400000, pubDateStr=2025-05-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792995461152, onlineIssueDateStr=2026-10-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792995461152, creator=13701087609, updateTime=1792995461152, 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=126, endPage=137, ext={EN=ArticleExt(id=1321482001895502413, articleId=1321482001694175820, tenantId=1146029695717560320, journalId=1146031654075715584, language=EN, title=Harmonic Emission Mechanism and Suppression Strategy for Three-level Converter in Three-phase-four-wire System: Analysis of Neutral-point Voltage Fluctuations and Switching Dead-time, columnId=1321481964440375995, journalTitle=Journal of Power Supply, columnName=Special Issue on Analysis and Control of Power Quality in New Power Systems, runingTitle=null, highlight=null, articleAbstract=

The neutral-point clamped (NPC) three-level converter is extensively used in low-voltage distribution networks with distributed energy resources. In a three-phase-four-wire system, the DC bus neutral-point (NP) of a three-phase converter is commonly connected to the N-wire, creating a zero-sequence current path in the system. This configuration leads to output voltage distortions caused by DC NP voltage fluctuations and switching dead-time, and further causes harmonic emission from the converter itself. First, the coupling relationship between NP voltage fluctuations and output current is analyzed, laying a foundation for establishing a quantitative model of NP voltage fluctuations. Based on this model, an active filtering circuit control system for DC bus is designed to suppress both the NP voltage fluctuations and the induced harmonics. Then, the influence of switching dead-time under various operating conditions of the three-phase converter is investigated. A quantitative relationship between the switching dead-time and output voltage distortions is derived, guiding the design of a modulation wave compensation strategy for mitigating the harmonic emission caused by switching dead-time. Finally, simulation models and an experimental platform were developed to reproduce the harmonic emission issues of the three-phase converter, and results validated the effectiveness of the proposed scheme.

, authors=Zhenhong LAI1, Zebin YANG1, Hao YI1, Xiaobin MU2, Yang LIU3, Wenbin LIU3, authorsList=Zhenhong LAI, Zebin YANG, Hao YI, Xiaobin MU, Yang LIU, Wenbin LIU, authorCompany=null, correspAuthors=Hao YI, 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=1321482002327515728, articleId=1321482001694175820, tenantId=1146029695717560320, journalId=1146031654075715584, language=CN, title=三相四线系统三电平变流器谐波发射机理及抑制策略——中点电位波动和开关死区问题分析, columnId=1149829646675607555, journalTitle=电源学报, columnName=新型电力系统电能质量分析与控制专辑, runingTitle=null, highlight=null, articleAbstract=

中点钳位型三电平变流器被广泛应用于含分布式电源的低压配电网，在三相四线系统中，常将三电平变流器的直流母线中点连接至N线，导致系统存在零序电流通路，使得直流中点电位波动、开关死区产生输出电压畸变，引起变流器自身的谐波发射。首先，分析中点电位波动和输出电流的交互耦合关系，以此为基础建立中点电位波动量化模型，并设计直流母线的有源滤波电路控制系统，对中点电位及其诱发的谐波进行抑制。其次，研究三电平变流器各工况下开关死区的影响，通过构建开关死区与输出电压畸变之间的定量关系，指导设计调制波补偿策略，以抑制由开关死区造成的谐波发射。最后，仿真模型和实验平台复现所聚焦的三电平变流器谐波发射问题，并验证所提方案的有效性。

, authors=赖振宏中国电源学会学生会员1, 杨泽斌中国电源学会会员1, 易皓中国电源学会会员1, 慕小斌2, 刘洋3, 刘文彬3, authorsList=赖振宏中国电源学会学生会员, 杨泽斌中国电源学会会员, 易皓中国电源学会会员, 慕小斌, 刘洋, 刘文彬, authorCompany=null, correspAuthors=易皓中国电源学会会员, authorNote=

赖振宏（1998—　），男，中国电源学会学生会员，博士研究生。研究方向：配电系统中的柔性互联技术研究。E-mail：。

杨泽斌（1995—　），男，中国电源学会会员，博士，助理教授。研究方向：电能质量综合治理技术。E-mail：。

慕小斌（1986—　），男，博士，高级工程师。研究方向：柔性输配电技术，定制电力技术。E-mail：。

刘洋（1988—　），男，博士，高级工程师。研究方向：配电网运行控制技术。E-mail：。

刘文彬（1996—　），男，硕士，工程师。研究方向：综合能源系统。E-mail：。

, correspAuthorsNote=
易皓（1984—　），男，中国电源学会会员，通信作者，博士，教授。研究方向：低压配电系统电力电子技术的应用。E-mail：。
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赖振宏（1998—　），男，中国电源学会学生会员，博士研究生。研究方向：配电系统中的柔性互联技术研究。E-mail：。

"}, bioImg=null, bioContent=

赖振宏（1998—　），男，中国电源学会学生会员，博士研究生。研究方向：配电系统中的柔性互联技术研究。E-mail：。

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杨泽斌（1995—　），男，中国电源学会会员，博士，助理教授。研究方向：电能质量综合治理技术。E-mail：。

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杨泽斌（1995—　），男，中国电源学会会员，博士，助理教授。研究方向：电能质量综合治理技术。E-mail：。

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慕小斌（1986—　），男，博士，高级工程师。研究方向：柔性输配电技术，定制电力技术。E-mail：。

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慕小斌（1986—　），男，博士，高级工程师。研究方向：柔性输配电技术，定制电力技术。E-mail：。

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刘洋（1988—　），男，博士，高级工程师。研究方向：配电网运行控制技术。E-mail：。

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刘洋（1988—　），男，博士，高级工程师。研究方向：配电网运行控制技术。E-mail：。

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刘文彬（1996—　），男，硕士，工程师。研究方向：综合能源系统。E-mail：。

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刘文彬（1996—　），男，硕士，工程师。研究方向：综合能源系统。E-mail：。

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三相四线系统三电平变流器谐波发射机理及抑制策略——中点电位波动和开关死区问题分析
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赖振宏中国电源学会学生会员 1 , 杨泽斌中国电源学会会员 1 , 易皓中国电源学会会员 1 , 慕小斌 2 , 刘洋 3 , 刘文彬 3
电源学报 | 新型电力系统电能质量分析与控制专辑 2025,23(3): 126-137
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电源学报 |新型电力系统电能质量分析与控制专辑 2025 , 23 (3) : 126 -137
三相四线系统三电平变流器谐波发射机理及抑制策略——中点电位波动和开关死区问题分析
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赖振宏（1998—　），男，中国电源学会学生会员，博士研究生。研究方向：配电系统中的柔性互联技术研究。E-mail：。

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赖振宏（1998—　），男，中国电源学会学生会员，博士研究生。研究方向：配电系统中的柔性互联技术研究。E-mail：。

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杨泽斌（1995—　），男，中国电源学会会员，博士，助理教授。研究方向：电能质量综合治理技术。E-mail：。

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慕小斌（1986—　），男，博士，高级工程师。研究方向：柔性输配电技术，定制电力技术。E-mail：。

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慕小斌（1986—　），男，博士，高级工程师。研究方向：柔性输配电技术，定制电力技术。E-mail：。

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刘洋（1988—　），男，博士，高级工程师。研究方向：配电网运行控制技术。E-mail：。

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刘洋（1988—　），男，博士，高级工程师。研究方向：配电网运行控制技术。E-mail：。

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刘文彬（1996—　），男，硕士，工程师。研究方向：综合能源系统。E-mail：。

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刘文彬（1996—　），男，硕士，工程师。研究方向：综合能源系统。E-mail：。

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赖振宏中国电源学会学生会员1 , 杨泽斌中国电源学会会员1 , 易皓中国电源学会会员1 , 慕小斌2 , 刘洋3 , 刘文彬3
作者信息
  • 1.西安交通大学电气工程学院，西安　710049
  • 2.中国电力科学研究院有限公司，北京　100192
  • 3.国网山东省电力公司电力科学研究院，济南　250003
通讯作者:
易皓（1984—　），男，中国电源学会会员，通信作者，博士，教授。研究方向：低压配电系统电力电子技术的应用。E-mail：。
作者简介:

赖振宏（1998—　），男，中国电源学会学生会员，博士研究生。研究方向：配电系统中的柔性互联技术研究。E-mail：。

杨泽斌（1995—　），男，中国电源学会会员，博士，助理教授。研究方向：电能质量综合治理技术。E-mail：。

慕小斌（1986—　），男，博士，高级工程师。研究方向：柔性输配电技术，定制电力技术。E-mail：。

刘洋（1988—　），男，博士，高级工程师。研究方向：配电网运行控制技术。E-mail：。

刘文彬（1996—　），男，硕士，工程师。研究方向：综合能源系统。E-mail：。

Harmonic Emission Mechanism and Suppression Strategy for Three-level Converter in Three-phase-four-wire System: Analysis of Neutral-point Voltage Fluctuations and Switching Dead-time
Zhenhong LAI Student Member, CPSS1 , Zebin YANG Member, CPSS1 , Hao YI Member, CPSS1 , Xiaobin MU2 , Yang LIU3 , Wenbin LIU3
Affiliations
  • 1.School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
  • 2.China Electric Power Research Institute, Beijing 100192, China
  • 3.Electric Power Research Institute, State Grid Shandong Electric Power Company, Ji’nan 250003, China
出版时间: 2025-05-30 doi: 10.13234/j.issn.2095-2805.2025.3.126
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中点钳位型三电平变流器被广泛应用于含分布式电源的低压配电网，在三相四线系统中，常将三电平变流器的直流母线中点连接至N线，导致系统存在零序电流通路，使得直流中点电位波动、开关死区产生输出电压畸变，引起变流器自身的谐波发射。首先，分析中点电位波动和输出电流的交互耦合关系，以此为基础建立中点电位波动量化模型，并设计直流母线的有源滤波电路控制系统，对中点电位及其诱发的谐波进行抑制。其次，研究三电平变流器各工况下开关死区的影响，通过构建开关死区与输出电压畸变之间的定量关系，指导设计调制波补偿策略，以抑制由开关死区造成的谐波发射。最后，仿真模型和实验平台复现所聚焦的三电平变流器谐波发射问题，并验证所提方案的有效性。

中点钳位型三电平变流器  /  三相四线系统  /  谐波发射  /  中点电位波动  /  开关死区

The neutral-point clamped (NPC) three-level converter is extensively used in low-voltage distribution networks with distributed energy resources. In a three-phase-four-wire system, the DC bus neutral-point (NP) of a three-phase converter is commonly connected to the N-wire, creating a zero-sequence current path in the system. This configuration leads to output voltage distortions caused by DC NP voltage fluctuations and switching dead-time, and further causes harmonic emission from the converter itself. First, the coupling relationship between NP voltage fluctuations and output current is analyzed, laying a foundation for establishing a quantitative model of NP voltage fluctuations. Based on this model, an active filtering circuit control system for DC bus is designed to suppress both the NP voltage fluctuations and the induced harmonics. Then, the influence of switching dead-time under various operating conditions of the three-phase converter is investigated. A quantitative relationship between the switching dead-time and output voltage distortions is derived, guiding the design of a modulation wave compensation strategy for mitigating the harmonic emission caused by switching dead-time. Finally, simulation models and an experimental platform were developed to reproduce the harmonic emission issues of the three-phase converter, and results validated the effectiveness of the proposed scheme.

Neutral-point clamped (NPC) three-level converter  /  three-phase-four-wire system  /  harmonic emission  /  neutral-point (NP) voltage fluctuation  /  switching dead-time
赖振宏中国电源学会学生会员, 杨泽斌中国电源学会会员, 易皓中国电源学会会员, 慕小斌, 刘洋, 刘文彬. 三相四线系统三电平变流器谐波发射机理及抑制策略——中点电位波动和开关死区问题分析. 电源学报, 2025 , 23 (3) : 126 -137 . DOI: 10.13234/j.issn.2095-2805.2025.3.126
Zhenhong LAI, Zebin YANG, Hao YI, Xiaobin MU, Yang LIU, Wenbin LIU. Harmonic Emission Mechanism and Suppression Strategy for Three-level Converter in Three-phase-four-wire System: Analysis of Neutral-point Voltage Fluctuations and Switching Dead-time[J]. Journal of Power Supply, 2025 , 23 (3) : 126 -137 . DOI: 10.13234/j.issn.2095-2805.2025.3.126
基金
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  • 国家电网总部科技资助项目(5400-202316216A-1-1-ZN)
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2025年第23卷第3期
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doi: 10.13234/j.issn.2095-2805.2025.3.126
  • 接收时间：2024-11-30
  • 首发时间：2026-10-26
  • 出版时间：2025-05-30
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  • 收稿日期：2024-11-30
  • 修回日期：2025-02-11
  • 录用日期：2025-03-05
基金
Science and Technology Project of State Grid Corporation of China(5400-202316216A-1-1-ZN)
国家电网总部科技资助项目(5400-202316216A-1-1-ZN)
作者信息
    1.西安交通大学电气工程学院，西安　710049
    2.中国电力科学研究院有限公司，北京　100192
    3.国网山东省电力公司电力科学研究院，济南　250003

通讯作者:

易皓（1984—　），男，中国电源学会会员，通信作者，博士，教授。研究方向：低压配电系统电力电子技术的应用。E-mail：。
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