Article(id=1192092483501834741, tenantId=1146029695717560320, journalId=1190306094246359042, issueId=1192092478032462291, articleNumber=null, orderNo=null, doi=10.19595/j.cnki.1000-6753.tces.240541, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1712505600000, receivedDateStr=2024-04-08, revisedDate=1715270400000, revisedDateStr=2024-05-10, acceptedDate=null, acceptedDateStr=null, onlineDate=1762146596069, onlineDateStr=2025-11-03, pubDate=1745510400000, pubDateStr=2025-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762146596069, onlineIssueDateStr=2025-11-03, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762146596069, creator=13701087609, updateTime=1762146596069, updator=13701087609, issue=Issue{id=1192092478032462291, tenantId=1146029695717560320, journalId=1190306094246359042, year='2025', volume='40', issue='8', pageStart='2353', pageEnd='2678', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1762146594770, creator=13701087609, updateTime=1762148049906, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1192098581373928325, tenantId=1146029695717560320, journalId=1190306094246359042, issueId=1192092478032462291, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1192098581373928326, tenantId=1146029695717560320, journalId=1190306094246359042, issueId=1192092478032462291, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2547, endPage=2559, ext={EN=ArticleExt(id=1192092483812213245, articleId=1192092483501834741, tenantId=1146029695717560320, journalId=1190306094246359042, language=EN, title=A Three-Dimensional Space Vector Pulse Width Modulation Strategy of Two-Phase to Single-Phase Non-Isolated Power Electronics Transformer, columnId=null, journalTitle=Transactions of China Electrotechnical Society, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Electrical isolation in advanced power supply systems typically relies on power frequency transformers or high-frequency isolation DC-DC converters. However, the transformers result in multiple converter stages and increase the system’s complexity and cost. To reduce the cost of advanced traction power supply system, this paper proposes a two-phase to single-phase non-isolated power electronic transformer (NI-PET) topology based on the existing traction transformer and has the advantages of fewer transformation stages and higher system efficiency.
Some switch states can result in short-circuit paths of the DC-link capacitance in NI-PET topology. The traditional modulation strategy fails to avoid the short-circuit paths. A three-dimensional space-vector pulse width modulation (3D-SVPWM) strategy is proposed based on the 3D space vector distribution diagram, taking the vectors of three ports as the coordinate axis. According to the number of available vectors, the 3D space is divided into different ranges. In addition, the proposed strategy determines the range of reference voltage vectors and selects available space vectors to complex the demanded reference vector. Finally, based on the V-v traction transformer, the simulation model and experimental platform are built.
Simulation and experimental results show that compared to the traditional space pulse width modulation (SPWM) strategy, the proposed modulation strategy can realize the stable operation of the system. When the load and grid-side voltage fluctuate repeatedly in a short period, the two-phase to single-phase NI-PET system restores a steady state within 0.2 s, the grid-side power factor remains above 0.99, and the THD of input and output current is less than 3%. With the same load, the three-phase current unbalance degree of the proposed topology is about 45% less than the traditional power supply system. It is verified that the proposed topology and modulation can adapt to harsh conditions such as continuous load and grid-side voltage fluctuations. Compared to PET, NI-PET avoids the loss caused by the isolation stage, thus significantly improving the efficiency. In the low-power experimental platform, the efficiency of NI-PET is about 10% higher than PET.
The following conclusions can be drawn. (1) The proposed two-phase to single-phase NI-PET topology can adapt to the harsh conditions of advanced traction power supply systems. It has the advantages of low cost and good power quality. (2) Compared to the traditional modulation strategy, the proposed one can avoid the short-circuit paths of DC-link capacitance. There is no short-circuit current that is much larger than the load current on the cascade line. (3) The proposed topology can achieve about 10% efficiency improvement in a low-power experimental platform and is expected to increase the efficiency by about 2% in industrial PET.
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相较于隔离型电力电子变压器(PET),非隔离电力电子变压器(NI-PET)取消了中间级隔离DC-DC变换器,具有功率密度高、变换级数少的优点。但该拓扑存在的直流电容短路路径限制了其应用领域且对可用开关状态和矢量边界产生的影响尚不明确。因此,该文首先分析单相-单相NI-PET矢量边界与调制度、前后级相位差的关系;其次结合贯通牵引供电系统需求,提出一种适配既有牵引变压器的两相-单相非隔离电力电子变压器,并提出一种规避所提拓扑短路矢量的三维空间矢量脉宽调制(3D-SVPWM)策略;最后结合Vv牵引变压器仿真和实验验证了所提拓扑应用于牵引供电系统的可行性,以及所提调制策略规避短路路径的有效性。结果表明,所提拓扑在保证系统输入输出特性良好的基础上,彻底取消隔离环节,降低了牵引供电系统成本。
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王 悦 女,2000年生,硕士研究生,研究方向为大功率变换器、电力电子变压器。E-mail: wangyuestudent@163.com
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王 悦 女,2000年生,硕士研究生,研究方向为大功率变换器、电力电子变压器。E-mail: wangyuestudent@163.com
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IEEE Transactions on Industrial Electronics,
2014,
61(7): 3257-3268., articleTitle=Power electronic traction transformer-medium voltage pro- totype, refAbstract=null)], funds=[Fund(id=1192140756648341515, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, awardId=2021YFB2601500, language=CN, fundingSource=国家重点研发计划(2021YFB2601500), fundOrder=null, country=null), Fund(id=1192140756715450381, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, awardId=52077183, language=CN, fundingSource=国家自然科学基金(52077183), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1192140748633027432, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, xref=null, ext=[AuthorCompanyExt(id=1192140748637221737, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, companyId=1192140748633027432, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1. School of Electrical Engineering Southwest Jiaotong University Chengdu 610031 China), AuthorCompanyExt(id=1192140748645610346, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, companyId=1192140748633027432, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1.西南交通大学电气工程学院 成都 610031)]), AuthorCompany(id=1192140748716913516, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, xref=null, ext=[AuthorCompanyExt(id=1192140748725302125, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, companyId=1192140748716913516, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2. Sichuan Aerospace Fenghuo Servo Control Technology Corporation Chengdu 611130 China), AuthorCompanyExt(id=1192140748733690734, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, companyId=1192140748716913516, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2.四川航天烽火伺服控制技术有限公司 成都 611130)])], figs=[ArticleFig(id=1192140751862641589, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.1, caption=
Comparison between traditional PET and NI-PET, figureFileSmall=+TqIP/FdWAa8p+R5xDGuNw==, figureFileBig=GfGc4JIQHQ/41n2I84ZBPg==, tableContent=null), ArticleFig(id=1192140751921361847, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图1, caption=
传统PET与NI-PET对比, figureFileSmall=+TqIP/FdWAa8p+R5xDGuNw==, figureFileBig=GfGc4JIQHQ/41n2I84ZBPg==, tableContent=null), ArticleFig(id=1192140752026219451, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.2, caption=
n-module two-phase to single-phase three-level full-bridge-half-bridge NI-PET topology, figureFileSmall=592DBmbJMueu7uH32QigVw==, figureFileBig=k1nV4ZZ+FMPmFQB8MUVlOA==, tableContent=null), ArticleFig(id=1192140752101716925, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图2, caption=
n模块两相-单相三电平全桥-半桥NI-PET拓扑, figureFileSmall=592DBmbJMueu7uH32QigVw==, figureFileBig=k1nV4ZZ+FMPmFQB8MUVlOA==, tableContent=null), ArticleFig(id=1192140752210768831, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.3, caption=
Schematic diagram of two-module single-phase to single-phase NI-PET short circuit, figureFileSmall=ttk+cS//uI/aU/hnGTDr4Q==, figureFileBig=6jhOFxHbGILoEhyNrKW57g==, tableContent=null), ArticleFig(id=1192140752282072000, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图3, caption=
两模块单相-单相NI-PET短路示意图, figureFileSmall=ttk+cS//uI/aU/hnGTDr4Q==, figureFileBig=6jhOFxHbGILoEhyNrKW57g==, tableContent=null), ArticleFig(id=1192140752361763778, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.4, caption=
Single-phase to single-phase NI-PET characterisation, figureFileSmall=+KkP33BfSQGg3J58uTozmA==, figureFileBig=laJ6BDvAR42rkVvbg75IFA==, tableContent=null), ArticleFig(id=1192140752437261252, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图4, caption=
单相-单相NI-PET特性分析, figureFileSmall=+KkP33BfSQGg3J58uTozmA==, figureFileBig=laJ6BDvAR42rkVvbg75IFA==, tableContent=null), ArticleFig(id=1192140752512758726, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.5, caption=
Plot of single-phase to single-phase NI-PET regulation versus phase difference between front and rear stage, figureFileSmall=ST9p/UZzEvmRuZQcpX2MmQ==, figureFileBig=RIDNylNCNGJ/6//8HFXKqw==, tableContent=null), ArticleFig(id=1192140752613422024, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图5, caption=
单相-单相NI-PET调制度与前后级相位差关系, figureFileSmall=ST9p/UZzEvmRuZQcpX2MmQ==, figureFileBig=RIDNylNCNGJ/6//8HFXKqw==, tableContent=null), ArticleFig(id=1192140752743445450, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.6, caption=
Schematic of two-phase to single-phase NI-PET three-dimensional space vectors, figureFileSmall=M6g14MjCL2q0dULrNCeFzA==, figureFileBig=sf7xWk9A2WSnOIyYlMSf6A==, tableContent=null), ArticleFig(id=1192140752852497356, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图6, caption=
两相-单相NI-PET三维空间矢量示意图, figureFileSmall=M6g14MjCL2q0dULrNCeFzA==, figureFileBig=sf7xWk9A2WSnOIyYlMSf6A==, tableContent=null), ArticleFig(id=1192140752923800526, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.7, caption=
Space vectors switching paths and four vectors block decomposition, figureFileSmall=7m51TCA74IOd9Avk28gDFw==, figureFileBig=76asPX/Xi5sXA6hly5oe+A==, tableContent=null), ArticleFig(id=1192140752986715088, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图7, caption=
空间矢量切换路径以及四矢量区间分解, figureFileSmall=7m51TCA74IOd9Avk28gDFw==, figureFileBig=76asPX/Xi5sXA6hly5oe+A==, tableContent=null), ArticleFig(id=1192140753133515729, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.8, caption=
Diagram of vector action time, figureFileSmall=m/JNLNBe+8kgLMPwXzKGzw==, figureFileBig=A6rHKZPitp6otgccX74hNg==, tableContent=null), ArticleFig(id=1192140753322259411, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图8, caption=
矢量作用时间示意图, figureFileSmall=m/JNLNBe+8kgLMPwXzKGzw==, figureFileBig=A6rHKZPitp6otgccX74hNg==, tableContent=null), ArticleFig(id=1192140753397756885, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.9, caption=
3D-SPWM strategy flowchart, figureFileSmall=Ijn9dAQaAEkeEQ0CfvLucw==, figureFileBig=wYlpTljLqRqSeAN97WmMhQ==, tableContent=null), ArticleFig(id=1192140753477448663, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图9, caption=
3D-SVPWM策略流程, figureFileSmall=Ijn9dAQaAEkeEQ0CfvLucw==, figureFileBig=wYlpTljLqRqSeAN97WmMhQ==, tableContent=null), ArticleFig(id=1192140753590694873, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.10, caption=
Comparison between the traditional modulation and the proposed modulation simulation, figureFileSmall=UsThKeXD3KTnPNpRY276TA==, figureFileBig=IjGISz5zHXkRVKQAlY0ZPA==, tableContent=null), ArticleFig(id=1192140753670386651, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图10, caption=
传统调制与所提调制仿真对比, figureFileSmall=UsThKeXD3KTnPNpRY276TA==, figureFileBig=IjGISz5zHXkRVKQAlY0ZPA==, tableContent=null), ArticleFig(id=1192140753766855646, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.11, caption=
Comparison of grid side power quality under load fluctuations under different power supply modes, figureFileSmall=oqK/C2HNN06exBIF/YH7tg==, figureFileBig=LN56/GBCHhOPIhSemjT+vA==, tableContent=null), ArticleFig(id=1192140753825575904, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图11, caption=
不同供电模式下负载波动网侧电能质量对比, figureFileSmall=oqK/C2HNN06exBIF/YH7tg==, figureFileBig=LN56/GBCHhOPIhSemjT+vA==, tableContent=null), ArticleFig(id=1192140754857374690, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.12, caption=
System simulation waveforms under harsh working conditions, figureFileSmall=SH1XlrnWh+YPdbQpaaniBQ==, figureFileBig=t3NkstNU6Lz4UPJMsw0AIA==, tableContent=null), ArticleFig(id=1192140754932872164, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图12, caption=
苛刻工况下系统仿真波形, figureFileSmall=SH1XlrnWh+YPdbQpaaniBQ==, figureFileBig=t3NkstNU6Lz4UPJMsw0AIA==, tableContent=null), ArticleFig(id=1192140754995786726, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.13, caption=
Static waveforms of front stage cascaded rectifier, figureFileSmall=W5zRjRrHuk85/WuRhAdiTg==, figureFileBig=y/OAgGIjZ8aA0MXDPe2CxQ==, tableContent=null), ArticleFig(id=1192140755054506984, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图13, caption=
前级全桥级联整流器静态波形, figureFileSmall=W5zRjRrHuk85/WuRhAdiTg==, figureFileBig=y/OAgGIjZ8aA0MXDPe2CxQ==, tableContent=null), ArticleFig(id=1192140755142587370, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.14, caption=
Output voltage and output current waveforms of two-phase to single-phase NI-PET, figureFileSmall=y3P+kfACduIwnoAR71DJjg==, figureFileBig=qzeAP8synjK2N+wWdBkhSg==, tableContent=null), ArticleFig(id=1192140755201307628, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图14, caption=
两相-单相NI-PET输出电压电流波形, figureFileSmall=y3P+kfACduIwnoAR71DJjg==, figureFileBig=qzeAP8synjK2N+wWdBkhSg==, tableContent=null), ArticleFig(id=1192140755260027886, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.15, caption=
Three-level two-phase to single-phase NI-PET experimental platform, figureFileSmall=W3+zekPGaMRrbXz3EKoH2g==, figureFileBig=UsMJ9uCoulORPnbo3RMy6A==, tableContent=null), ArticleFig(id=1192140755327136752, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图15, caption=
三电平两相-单相NI-PET实验平台, figureFileSmall=W3+zekPGaMRrbXz3EKoH2g==, figureFileBig=UsMJ9uCoulORPnbo3RMy6A==, tableContent=null), ArticleFig(id=1192140755402634226, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.16, caption=
Comparison of CP-SPWM and 3D-SPWM Strategies, figureFileSmall=Kloxr8zYkqizssu2JNe3aA==, figureFileBig=6cQB9Qg+0MyosJYvq6W81A==, tableContent=null), ArticleFig(id=1192140755507491828, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图16, caption=
CP-SPWM与3D-SVPWM策略对比, figureFileSmall=Kloxr8zYkqizssu2JNe3aA==, figureFileBig=6cQB9Qg+0MyosJYvq6W81A==, tableContent=null), ArticleFig(id=1192140755599766516, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.17, caption=
Voltage waveforms at the transducer modulation regime mutation port, figureFileSmall=hUxnioDsZ9WnOR4DDIkacA==, figureFileBig=IOzsDcgyInOfatUDMu/a8A==, tableContent=null), ArticleFig(id=1192140755700429815, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图17, caption=
变换器调制度突变端口电压波形, figureFileSmall=hUxnioDsZ9WnOR4DDIkacA==, figureFileBig=IOzsDcgyInOfatUDMu/a8A==, tableContent=null), ArticleFig(id=1192140755826258937, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.18, caption=
Two phase to single phase NI-PET port waveforms, figureFileSmall=QzIY8JzoJwxUe7Wp7Vz4fw==, figureFileBig=9H3skSAbK7Xs4E4eVJ2mdQ==, tableContent=null), ArticleFig(id=1192140755947893755, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图18, caption=
两相-单相NI-PET端口电平波形, figureFileSmall=QzIY8JzoJwxUe7Wp7Vz4fw==, figureFileBig=9H3skSAbK7Xs4E4eVJ2mdQ==, tableContent=null), ArticleFig(id=1192140756019196925, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.19, caption=
Two phase to single phase NI-PET dynamic cutting and loading experiment waveforms, figureFileSmall=0SJNNzwRCCQ0+5c19rIZhQ==, figureFileBig=wd7YsmylSWr3vQEvIQz9rw==, tableContent=null), ArticleFig(id=1192140756111471615, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图19, caption=
两相-单相NI-PET动态切载实验波形, figureFileSmall=0SJNNzwRCCQ0+5c19rIZhQ==, figureFileBig=wd7YsmylSWr3vQEvIQz9rw==, tableContent=null), ArticleFig(id=1192140756165996544, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Fig.20, caption=
Comparison of efficiency curves between NI-PET and PET, figureFileSmall=zbr9iKxcuqnWcmdYy6KspA==, figureFileBig=ErsnCDfANv+hm//+hwJCQg==, tableContent=null), ArticleFig(id=1192140756233105410, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=图20, caption=
NI-PET与PET效率曲线对比, figureFileSmall=zbr9iKxcuqnWcmdYy6KspA==, figureFileBig=ErsnCDfANv+hm//+hwJCQg==, tableContent=null), ArticleFig(id=1192140756300214276, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Tab.1, caption=
Comparison of the proposed programme with existing programme indicators
, figureFileSmall=null, figureFileBig=null, tableContent=
| 拓扑特点 | 3P-1P[19] | 2P-1P[15] | PET[20] | 本文 |
| 电能转换级数 | 3 | 3 | 5 | 2 |
| 输入相数 | 3 | 2 | 3 | 2 |
| 输入电压/kV | 110 | 27.5 | 110 | 27.5 |
| 功率模块数 | 8 | 12 | 54 | 12 |
| 开关管个数 | 160 | 192 | 1 296 | 192 |
| 牵引变压器 | 0 | 既有 | 0 | 既有 |
| 工频变压器 | 定制8个 | 改造多抽头 | 0 | 0 |
| 高频变压器 | 0 | 0 | 54 | 0 |
), ArticleFig(id=1192140756396683270, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=表1, caption=
所提方案与现有方案指标对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 拓扑特点 | 3P-1P[19] | 2P-1P[15] | PET[20] | 本文 |
| 电能转换级数 | 3 | 3 | 5 | 2 |
| 输入相数 | 3 | 2 | 3 | 2 |
| 输入电压/kV | 110 | 27.5 | 110 | 27.5 |
| 功率模块数 | 8 | 12 | 54 | 12 |
| 开关管个数 | 160 | 192 | 1 296 | 192 |
| 牵引变压器 | 0 | 既有 | 0 | 既有 |
| 工频变压器 | 定制8个 | 改造多抽头 | 0 | 0 |
| 高频变压器 | 0 | 0 | 54 | 0 |
), ArticleFig(id=1192140756463792134, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=EN, label=Tab.2, caption=
System simulation experimental parameter
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参 数 | 仿真 | 实验 |
| uα, uβ 有效值 | 27.5 kV | 50 V |
| | 9.2×6 kV | 100 V |
| 满载/Ω | 25 | 50 |
| 模块数 | 6 | 2 |
| 滤波电感/mH | 5 | 5 |
| 直流支撑电容/mF | 5 | 5 |
| 负载额定cosφ | 0.8 | 0.8 |
| 调制度 | 0.707 | 0.707 |
), ArticleFig(id=1192140756518318088, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092483501834741, language=CN, label=表2, caption=
系统仿真、实验参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参 数 | 仿真 | 实验 |
| uα, uβ 有效值 | 27.5 kV | 50 V |
| | 9.2×6 kV | 100 V |
| 满载/Ω | 25 | 50 |
| 模块数 | 6 | 2 |
| 滤波电感/mH | 5 | 5 |
| 直流支撑电容/mF | 5 | 5 |
| 负载额定cosφ | 0.8 | 0.8 |
| 调制度 | 0.707 | 0.707 |
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