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Article(id=1322506823144424323, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1322506677417521478, articleNumber=null, orderNo=null, doi=10.13234/j.issn.2095-2805.2026.2.50, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1692201600000, receivedDateStr=2023-08-17, revisedDate=1696780800000, revisedDateStr=2023-10-09, acceptedDate=1698249600000, acceptedDateStr=2023-10-26, onlineDate=1793239797625, onlineDateStr=2026-10-29, pubDate=1772208000000, pubDateStr=2026-02-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793239797625, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793239797625, creator=13701087609, updateTime=1793239797625, updator=13701087609, issue=Issue{id=1322506677417521478, tenantId=1146029695717560320, journalId=1146031654075715584, year='2026', volume='24', issue='2', pageStart='1', pageEnd='342', issueExtLink='null', onlineDate='null', pubDate='1772208000000', pubDateStr='2026-02-28', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793239762882, creator='13701087609', updateTime=1793239762882, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=50, endPage=61, ext={EN=ArticleExt(id=1322506823345750916, articleId=1322506823144424323, tenantId=1146029695717560320, journalId=1146031654075715584, language=EN, title=Modular Combined DC-DC Converter Based on Buck-LLC Integration for New Energy Resources Access, columnId=1321491621716279957, journalTitle=Journal of Power Supply, columnName=Power Converter Topologies, runingTitle=null, highlight=null, articleAbstract=

The operating characteristics of DC-DC converters have a profound impact on the flexible scheduling of distributed resources in active distribution network. A modular combined DC-DC converter based on Buck-LLC integration is proposed for new energy resources access. Through the high isolation resonant power unit, the input is connected in series to provide high voltage withstand capacity while the output is connected in parallel to meet the demand of high power, thus realizing the efficient transmission of high power. The proposed topology adjusts the duty cycle of a series dual Buck circuit to meet the requirements of connecting different medium-voltage DC networks. By introducing an auxiliary inductor, the zero-voltage-switching (ZVS) problem of all the switches in a wide input range is solved, and the energy transmission efficiency is improved. Based on a study on the ZVS boundary conditions for each switch, the auxiliary circuit and control parameters areoptimally designed. Finally, a power unit prototype with 6.25–7.00 kW was designed and fabricated, and experimental results verified the feasibility of the proposed topology, as well as the correctness of the aforementioned working principle and steady-state analysis.

, authors=Qianfan ZHOU1, 2, Dai WAN1, 2, Xujin DUAN1, Jiran ZHU1, 2, authorsList=Qianfan ZHOU, Dai WAN, Xujin DUAN, Jiran ZHU, authorCompany=null, correspAuthors=Qianfan ZHOU, 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=1322506825166078853, articleId=1322506823144424323, tenantId=1146029695717560320, journalId=1146031654075715584, language=CN, title=面向新能源接入的Buck-LLC集成模块化组合式直流变换器, columnId=1321491623763100311, journalTitle=电源学报, columnName=电力电子变换器拓扑, runingTitle=null, highlight=null, articleAbstract=

直流变换器运行特性对有源配电网分布式资源灵活调节影响深刻，本文提出了1种面向新能源接入的Buck-LLC集成模块化组合式直流变换器，通过高隔离谐振式功率单元输入端串联提供高电压耐受能力，输出端并联满足大功率需求，实现大功率高效传输。所提拓扑以调节串联型双Buck电路占空比满足接入不同等级中压直流电网需求，通过引入辅助电感，解决了所有开关管宽输入范围内的软开关难题，提高了能量传输效率。基于对各开关管实现软开关边界条件的研究，对辅助电路及控制参数进行了优化设计。最终设计并研制了1台6.25~7.00 kW功率单元实验样机，证明了所提拓扑的可行性，以及前述工作原理、稳态分析的正确性。

, authors=周芊帆1, 2, 万代1, 2, 段绪金1, 朱吉然1, 2, authorsList=周芊帆, 万代, 段绪金, 朱吉然, authorCompany=null, correspAuthors=周芊帆, authorNote=

万代（1985—　），男，博士，高级工程师。研究方向：有源配电网协调互动。E-mail：。

段绪金（1989—　），男，硕士，高级工程师。研究方向：配电一次设备。E-mail：。

朱吉然（1985—　），男，博士，高级工程师。研究方向：配电智能化应用。E-mail：。

, correspAuthorsNote=
周芊帆（1993—　），男，通信作者，博士，工程师。研究方向：中高压直流变换。E-mail：。
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万代（1985—　），男，博士，高级工程师。研究方向：有源配电网协调互动。E-mail：。

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万代（1985—　），男，博士，高级工程师。研究方向：有源配电网协调互动。E-mail：。

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段绪金（1989—　），男，硕士，高级工程师。研究方向：配电一次设备。E-mail：。

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段绪金（1989—　），男，硕士，高级工程师。研究方向：配电一次设备。E-mail：。

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朱吉然（1985—　），男，博士，高级工程师。研究方向：配电智能化应用。E-mail：。

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朱吉然（1985—　），男，博士，高级工程师。研究方向：配电智能化应用。E-mail：。

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面向新能源接入的Buck-LLC集成模块化组合式直流变换器
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周芊帆 1, 2 , 万代 1, 2 , 段绪金 1 , 朱吉然 1, 2
电源学报 | 电力电子变换器拓扑 2026,24(2): 50-61
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电源学报 |电力电子变换器拓扑 2026 , 24 (2) : 50 -61
面向新能源接入的Buck-LLC集成模块化组合式直流变换器
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周芊帆1, 2 , 万代1, 2 , 段绪金1 , 朱吉然1, 2
作者信息
  • 1.国网湖南省电力有限公司电力科学研究院，长沙　410000
  • 2.国网配电网智能化应用技术实验室，长沙　410000
通讯作者:
周芊帆（1993—　），男，通信作者，博士，工程师。研究方向：中高压直流变换。E-mail：。
作者简介:

万代（1985—　），男，博士，高级工程师。研究方向：有源配电网协调互动。E-mail：。

段绪金（1989—　），男，硕士，高级工程师。研究方向：配电一次设备。E-mail：。

朱吉然（1985—　），男，博士，高级工程师。研究方向：配电智能化应用。E-mail：。

Modular Combined DC-DC Converter Based on Buck-LLC Integration for New Energy Resources Access
Qianfan ZHOU1, 2 , Dai WAN1, 2 , Xujin DUAN1 , Jiran ZHU1, 2
Affiliations
  • 1.Electric Power Research Institute, State Grid Hunan Electric Power Co., Ltd., Changsha 410000, China
  • 2.State Grid Corporation Laboratory of Intelligent Application Technology for Distribution Network, Changsha 410000, China
出版时间: 2026-02-28 doi: 10.13234/j.issn.2095-2805.2026.2.50
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摘要
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直流变换器运行特性对有源配电网分布式资源灵活调节影响深刻，本文提出了1种面向新能源接入的Buck-LLC集成模块化组合式直流变换器，通过高隔离谐振式功率单元输入端串联提供高电压耐受能力，输出端并联满足大功率需求，实现大功率高效传输。所提拓扑以调节串联型双Buck电路占空比满足接入不同等级中压直流电网需求，通过引入辅助电感，解决了所有开关管宽输入范围内的软开关难题，提高了能量传输效率。基于对各开关管实现软开关边界条件的研究，对辅助电路及控制参数进行了优化设计。最终设计并研制了1台6.25~7.00 kW功率单元实验样机，证明了所提拓扑的可行性，以及前述工作原理、稳态分析的正确性。

直流变换器  /  直流配电网  /  Buck-LLC  /  模块化组合式  /  软开关

The operating characteristics of DC-DC converters have a profound impact on the flexible scheduling of distributed resources in active distribution network. A modular combined DC-DC converter based on Buck-LLC integration is proposed for new energy resources access. Through the high isolation resonant power unit, the input is connected in series to provide high voltage withstand capacity while the output is connected in parallel to meet the demand of high power, thus realizing the efficient transmission of high power. The proposed topology adjusts the duty cycle of a series dual Buck circuit to meet the requirements of connecting different medium-voltage DC networks. By introducing an auxiliary inductor, the zero-voltage-switching (ZVS) problem of all the switches in a wide input range is solved, and the energy transmission efficiency is improved. Based on a study on the ZVS boundary conditions for each switch, the auxiliary circuit and control parameters areoptimally designed. Finally, a power unit prototype with 6.25–7.00 kW was designed and fabricated, and experimental results verified the feasibility of the proposed topology, as well as the correctness of the aforementioned working principle and steady-state analysis.

DC-DC converter  /  DC distribution network  /  Buck-LLC  /  modular combination  /  zero-voltage-switching (ZVS)
周芊帆, 万代, 段绪金, 朱吉然. 面向新能源接入的Buck-LLC集成模块化组合式直流变换器. 电源学报, 2026 , 24 (2) : 50 -61 . DOI: 10.13234/j.issn.2095-2805.2026.2.50
Qianfan ZHOU, Dai WAN, Xujin DUAN, Jiran ZHU. Modular Combined DC-DC Converter Based on Buck-LLC Integration for New Energy Resources Access[J]. Journal of Power Supply, 2026 , 24 (2) : 50 -61 . DOI: 10.13234/j.issn.2095-2805.2026.2.50
基金
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  • 国网湖南省电力有限公司科技项目(5216A522000M)
文献
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2026年第24卷第2期
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doi: 10.13234/j.issn.2095-2805.2026.2.50
  • 接收时间：2023-08-17
  • 首发时间：2026-10-29
  • 出版时间：2026-02-28
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  • 收稿日期：2023-08-17
  • 修回日期：2023-10-09
  • 录用日期：2023-10-26
基金
Scientific Project of State Grid Hunan Electric Power Co., Ltd.(5216A522000M)
国网湖南省电力有限公司科技项目(5216A522000M)
作者信息
    1.国网湖南省电力有限公司电力科学研究院，长沙　410000
    2.国网配电网智能化应用技术实验室，长沙　410000

通讯作者:

周芊帆（1993—　），男，通信作者，博士，工程师。研究方向：中高压直流变换。E-mail：。
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https://castjournals.cast.org.cn/joweb/dyxb/CN/10.13234/j.issn.2095-2805.2026.2.50
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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
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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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