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Article(id=1321491443416416729, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321491360620851250, articleNumber=null, orderNo=null, doi=10.13234/j.issn.2095-2805.2025.7.36, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1667836800000, receivedDateStr=2022-11-08, revisedDate=1675785600000, revisedDateStr=2023-02-08, acceptedDate=1678896000000, acceptedDateStr=2023-03-16, onlineDate=1792997712234, onlineDateStr=2026-10-26, pubDate=1764432000000, pubDateStr=2025-11-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792997712234, onlineIssueDateStr=2026-10-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792997712234, creator=13701087609, updateTime=1792997712234, updator=13701087609, issue=Issue{id=1321491360620851250, tenantId=1146029695717560320, journalId=1146031654075715584, year='2025', volume='23', issue='7', pageStart='1', pageEnd='348', issueExtLink='null', onlineDate='null', pubDate='1764432000000', pubDateStr='2025-11-30', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792997692494, creator='13701087609', updateTime=1792997936183, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1321492382776931282, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321491360620851250, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1321492382776931283, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321491360620851250, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=36, endPage=44, ext={EN=ArticleExt(id=1321491444293026266, articleId=1321491443416416729, tenantId=1146029695717560320, journalId=1146031654075715584, language=EN, title=Fast Neutral-point Potential Balancing Control of Three-level NPC Inverter Under High Modulation Depth, columnId=1152281492488549232, journalTitle=Journal of Power Supply, columnName=DC-AC Inverters, runingTitle=null, highlight=null, articleAbstract=

To solve the problem of uncontrollable area of bus neutral-point potential under high modulation depth of conventional virtual space vector pulse-width modulation (VSVPWM), an optimized VSVPWM algorithm was proposed to realize the rapid balance of neutral-point potential in the whole linear modulation area. A virtual medium vector was reconstructed based on the principle of VSVPWM bus neutral-point potential balancing. To ensure the voltage equalization performance of the reconstructed virtual medium vector while improving the adaptability of the algorithm with respect to the perturbation of system parameters, the fuzzy reasoning for the closed-loop control of neutral-point potential was designed to determine the reconstruction factor for optimizing the VSVPWM. Even in the case of asymmetric DC bus capacitance, the optimized VSVPWM can realize rapid voltage equalization control in the full range of the linear modulation region. The algorithm was further simplified in a 60° coordinate system, so that the number of subsector judgment conditions of reference voltage vector and volt-second equilibrium equations can be reduced from 30 to 5. Experimental results show that the proposed control strategy has good performance, the voltage equalization regulation time is significantly reduced, and the steady-state deviation of DC bus neutral-point potential can be controlled within 1.14%. In addition, the total harmonic distortion of grid-connected current is lower compared with that under the conventional VSVPWM.

, authors=Qing YANG1, Jingtao HUANG1, Haiping GUAN2, Guangxu JIANG1, Shuai LIU1, authorsList=Qing YANG, Jingtao HUANG, Haiping GUAN, Guangxu JIANG, Shuai LIU, authorCompany=null, correspAuthors=Jingtao HUANG, 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=1321491445953970653, articleId=1321491443416416729, tenantId=1146029695717560320, journalId=1146031654075715584, language=CN, title=高调制深度下三电平NPC逆变器中点电位快速均衡控制, columnId=1149829848698454020, journalTitle=电源学报, columnName=DC-AC逆变器, runingTitle=null, highlight=null, articleAbstract=

针对常规虚拟空间矢量脉宽调制VSVPWM（virtual space vector pulse-width modulation）在高调制深度下，母线中点电位存在不可控区域问题，提出1种可在整个线性调制区实现中点电位快速均衡的优化型VSVPWM算法。基于VSVPWM母线中点电位均衡原理重构虚拟中矢量，为保证重构后虚拟中矢量的均压性能，同时提高算法对系统参数摄动的适应性，设计用于中点电压闭环控制的模糊推理确定重构因子对VSVPWM进行优化。即使在直流母线电容不对称情况下，优化型VSVPWM仍可实现线性调制区全范围的快速均压控制。进一步在60°坐标系内对算法简化，参考电压矢量子区域的判断条件、伏秒平衡方程组从30个减少至5个。实验结果表明，该控制策略具有良好性能，均压调节时间显著降低，直流母线中点电位稳态偏差可控制在1.14%内，相较于传统VSVPWM，并网电流总谐波含量更低。

, authors=杨清1, 黄景涛中国电源学会高级会员1, 关海平2, 蒋广旭1, 刘帅1, authorsList=杨清, 黄景涛中国电源学会高级会员, 关海平, 蒋广旭, 刘帅, authorCompany=null, correspAuthors=黄景涛中国电源学会高级会员, authorNote=

杨清（1998—　），男，硕士研究生。研究方向：并网逆变器控制与脉宽调制技术。E-mail：。

关海平（1978—　），男，硕士，高级工程师。研究方向：低碳能源。E-mail：。

蒋广旭（1998—　），男，硕士。研究方向：电力电子传动。E-mail：。

刘帅（1999—　），男，硕士。研究方向：电力电子传动。E-mail：。

, correspAuthorsNote=
黄景涛（1977—　），男，中国电源学会高级会员，通信作者，博士，副教授。研究方向：研究方向为新能源发电与电力电子技术。E-mail：。
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杨清（1998—　），男，硕士研究生。研究方向：并网逆变器控制与脉宽调制技术。E-mail：。

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杨清（1998—　），男，硕士研究生。研究方向：并网逆变器控制与脉宽调制技术。E-mail：。

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关海平（1978—　），男，硕士，高级工程师。研究方向：低碳能源。E-mail：。

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关海平（1978—　），男，硕士，高级工程师。研究方向：低碳能源。E-mail：。

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蒋广旭（1998—　），男，硕士。研究方向：电力电子传动。E-mail：。

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蒋广旭（1998—　），男，硕士。研究方向：电力电子传动。E-mail：。

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刘帅（1999—　），男，硕士。研究方向：电力电子传动。E-mail：。

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刘帅（1999—　），男，硕士。研究方向：电力电子传动。E-mail：。

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高调制深度下三电平NPC逆变器中点电位快速均衡控制
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杨清 1 , 黄景涛中国电源学会高级会员 1 , 关海平 2 , 蒋广旭 1 , 刘帅 1
电源学报 | DC-AC逆变器 2025,23(7): 36-44
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电源学报 |DC-AC逆变器 2025 , 23 (7) : 36 -44
高调制深度下三电平NPC逆变器中点电位快速均衡控制
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杨清（1998—　），男，硕士研究生。研究方向：并网逆变器控制与脉宽调制技术。E-mail：。

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杨清（1998—　），男，硕士研究生。研究方向：并网逆变器控制与脉宽调制技术。E-mail：。

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关海平（1978—　），男，硕士，高级工程师。研究方向：低碳能源。E-mail：。

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关海平（1978—　），男，硕士，高级工程师。研究方向：低碳能源。E-mail：。

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杨清1 , 黄景涛中国电源学会高级会员1 , 关海平2 , 蒋广旭1 , 刘帅1
作者信息
  • 1.河南科技大学电气工程学院，洛阳　471023
  • 2.通辽电投发电有限责任公司，通辽　028001
通讯作者:
黄景涛（1977—　），男，中国电源学会高级会员，通信作者，博士，副教授。研究方向：研究方向为新能源发电与电力电子技术。E-mail：。
作者简介:

杨清（1998—　），男，硕士研究生。研究方向：并网逆变器控制与脉宽调制技术。E-mail：。

关海平（1978—　），男，硕士，高级工程师。研究方向：低碳能源。E-mail：。

蒋广旭（1998—　），男，硕士。研究方向：电力电子传动。E-mail：。

刘帅（1999—　），男，硕士。研究方向：电力电子传动。E-mail：。

Fast Neutral-point Potential Balancing Control of Three-level NPC Inverter Under High Modulation Depth
Qing YANG1 , Jingtao HUANG Senior Member, CPSS1 , Haiping GUAN2 , Guangxu JIANG1 , Shuai LIU1
Affiliations
  • 1.College of Electrical Engineering, Henan University of Science and Technology, Luoyang 471023, China
  • 2.Tongliao SPIC Power Generation Co., Ltd., Tongliao 028001, China
出版时间: 2025-11-30 doi: 10.13234/j.issn.2095-2805.2025.7.36
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针对常规虚拟空间矢量脉宽调制VSVPWM（virtual space vector pulse-width modulation）在高调制深度下，母线中点电位存在不可控区域问题，提出1种可在整个线性调制区实现中点电位快速均衡的优化型VSVPWM算法。基于VSVPWM母线中点电位均衡原理重构虚拟中矢量，为保证重构后虚拟中矢量的均压性能，同时提高算法对系统参数摄动的适应性，设计用于中点电压闭环控制的模糊推理确定重构因子对VSVPWM进行优化。即使在直流母线电容不对称情况下，优化型VSVPWM仍可实现线性调制区全范围的快速均压控制。进一步在60°坐标系内对算法简化，参考电压矢量子区域的判断条件、伏秒平衡方程组从30个减少至5个。实验结果表明，该控制策略具有良好性能，均压调节时间显著降低，直流母线中点电位稳态偏差可控制在1.14%内，相较于传统VSVPWM，并网电流总谐波含量更低。

三电平NPC逆变器  /  中点电位均衡  /  虚拟中矢量  /  重构因子  /  模糊推理

To solve the problem of uncontrollable area of bus neutral-point potential under high modulation depth of conventional virtual space vector pulse-width modulation (VSVPWM), an optimized VSVPWM algorithm was proposed to realize the rapid balance of neutral-point potential in the whole linear modulation area. A virtual medium vector was reconstructed based on the principle of VSVPWM bus neutral-point potential balancing. To ensure the voltage equalization performance of the reconstructed virtual medium vector while improving the adaptability of the algorithm with respect to the perturbation of system parameters, the fuzzy reasoning for the closed-loop control of neutral-point potential was designed to determine the reconstruction factor for optimizing the VSVPWM. Even in the case of asymmetric DC bus capacitance, the optimized VSVPWM can realize rapid voltage equalization control in the full range of the linear modulation region. The algorithm was further simplified in a 60° coordinate system, so that the number of subsector judgment conditions of reference voltage vector and volt-second equilibrium equations can be reduced from 30 to 5. Experimental results show that the proposed control strategy has good performance, the voltage equalization regulation time is significantly reduced, and the steady-state deviation of DC bus neutral-point potential can be controlled within 1.14%. In addition, the total harmonic distortion of grid-connected current is lower compared with that under the conventional VSVPWM.

Three-level NPC inverter  /  neutral-point potential balancing  /  virtual medium vector  /  reconstruction factor  /  fuzzy reasoning
杨清, 黄景涛中国电源学会高级会员, 关海平, 蒋广旭, 刘帅. 高调制深度下三电平NPC逆变器中点电位快速均衡控制. 电源学报, 2025 , 23 (7) : 36 -44 . DOI: 10.13234/j.issn.2095-2805.2025.7.36
Qing YANG, Jingtao HUANG, Haiping GUAN, Guangxu JIANG, Shuai LIU. Fast Neutral-point Potential Balancing Control of Three-level NPC Inverter Under High Modulation Depth[J]. Journal of Power Supply, 2025 , 23 (7) : 36 -44 . DOI: 10.13234/j.issn.2095-2805.2025.7.36
基金
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  • 国家自然科学基金资助项目(U1504617)
  • 教育部产学合作协同育人项目(202101222007)
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2025年第23卷第7期
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文章信息
doi: 10.13234/j.issn.2095-2805.2025.7.36
  • 接收时间：2022-11-08
  • 首发时间：2026-10-26
  • 出版时间：2025-11-30
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出版历史
  • 收稿日期：2022-11-08
  • 修回日期：2023-02-08
  • 录用日期：2023-03-16
基金
National Natural Science Foundation of China(U1504617)
国家自然科学基金资助项目(U1504617)
Industry-university Cooperative Education Program of the Ministry of Education(202101222007)
教育部产学合作协同育人项目(202101222007)
作者信息
    1.河南科技大学电气工程学院，洛阳　471023
    2.通辽电投发电有限责任公司，通辽　028001

通讯作者:

黄景涛（1977—　），男，中国电源学会高级会员，通信作者，博士，副教授。研究方向：研究方向为新能源发电与电力电子技术。E-mail：。
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https://castjournals.cast.org.cn/joweb/dyxb/CN/10.13234/j.issn.2095-2805.2025.7.36
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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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