Article(id=1304923124051505654, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1304923090710982825, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2026.04.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1750089600000, receivedDateStr=2025-06-17, revisedDate=1754236800000, revisedDateStr=2025-08-04, acceptedDate=null, acceptedDateStr=null, onlineDate=1789047517073, onlineDateStr=2026-09-10, pubDate=1776614400000, pubDateStr=2026-04-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789047517073, onlineIssueDateStr=2026-09-10, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789047517073, creator=13701087609, updateTime=1789047517073, updator=13701087609, issue=Issue{id=1304923090710982825, tenantId=1146029695717560320, journalId=1149653034449285133, year='2026', volume='59', issue='4', pageStart='1', pageEnd='144', issueExtLink='null', onlineDate='null', pubDate='1776614400000', pubDateStr='2026-04-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789047509124, creator='13701087609', updateTime=1789118076681, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1305219072573071941, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1304923090710982825, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1305219072573071942, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1304923090710982825, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=71, endPage=77, ext={EN=ArticleExt(id=1304923124298969591, articleId=1304923124051505654, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Research on air gap electric field and reliability of motor insulation, columnId=1190369198472794288, journalTitle=Insulating Materials, columnName=Insulation Technology, runingTitle=null, highlight=null, articleAbstract=
In this paper, the influence laws of radial and axial dimensions of air gap on the internal electric field of motor insulation were studied by constructing the insulation structure and its internal air gap model. The quantitative relationship between the change of air gap size and electric field were revealed, and the mathematical model was established based on the air gap size parameters. At the same time, to simulate the air gap generated in actual operation, the cold-hot shock cycling test was conducted on models. By comparing the changes of partial discharge inception voltage (PDIV), dielectric loss factor, and electrothermal ageing life of the model before and after the test, the effect of the air gap on long-term reliability of the insulation structure was comprehensively evaluated. The results show that when the axial dimension of air gap is constant, the gap electric field decreases exponentially with the increase of the radial dimension of air gap. When the radial dimension of the air gap is constant, the air gap electric field increases exponentially with the increase of the axial dimension of air gap. As the cycle period of cold-hot shock increases, the overall PDIV of the model shows a downward trend, while the dielectric loss factor shows an upward trend. The electrothermal ageing life of the samples before and after cold-hot shock cycleing test are quite different, the ageing life of the sample after 10 cycles of cold-hot shock is only about 1/30 of that of the control sample.
, authors=Dan LI
1, 2, Jiexin FAN
1, 2, Ruichao HU
1, 2, Xiaozhuo WANG
1, 2, Guanfang LIU
1, 2, authorsList=Dan LI, Jiexin FAN, Ruichao HU, Xiaozhuo WANG, Guanfang LIU, authorCompany=null, correspAuthors=null, 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=1304923127243371028, articleId=1304923124051505654, tenantId=1146029695717560320, journalId=1149653034449285133, language=CN, title=电机绝缘气隙电场与可靠性研究, columnId=1190369198724452531, journalTitle=绝缘材料, columnName=绝缘技术, runingTitle=null, highlight=null, articleAbstract=
本文通过构建绝缘结构及其内部气隙模型,研究气隙径向与轴向尺寸对绝缘内部电场的影响规律,揭示气隙尺寸变化与电场之间的定量关系,并基于气隙尺寸参数建立数学模型。同时,为模拟实际运行中产生的气隙,对模型进行冷热冲击循环试验,通过对比试验前后模型局部放电起始电压(PDIV)、介质损耗因数及电热老化寿命的变化,综合评估气隙对绝缘结构长期可靠性的影响。结果表明:气隙轴向尺寸一定时,气隙电场强度随着气隙径向尺寸的增大呈幂指数函数减小;当气隙径向尺寸一定时,气隙电场强度随着气隙轴向尺寸的增大呈幂指数函数增大;随着冷热冲击循环周期的增加,模型的PDIV整体呈下降趋势,介质损耗因数呈上升趋势;冷热冲击循环试验前后试样的电热老化寿命相差较大,经过10次冷热冲击循环周期的试样老化寿命仅为对比试样的1/30左右。
, authors=李丹
1, 2, 樊洁心
1, 2, 胡瑞超
1, 2, 王孝卓
1, 2, 刘冠芳
1, 2, authorsList=李丹, 樊洁心, 胡瑞超, 王孝卓, 刘冠芳, authorCompany=null, correspAuthors=null, authorNote=
李丹(1986-),女(汉族),山东菏泽人,高级工程师,主要从事电机绝缘设计及仿真技术的研究。
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1中车永济电机有限公司,山西 运城 044502
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李丹(1986-),女(汉族),山东菏泽人,高级工程师,主要从事电机绝缘设计及仿真技术的研究。
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李丹(1986-),女(汉族),山东菏泽人,高级工程师,主要从事电机绝缘设计及仿真技术的研究。
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1CRRC YongJi Electric Co., Ltd., Yuncheng 044502, China
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1中车永济电机有限公司,山西 运城 044502
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1CRRC YongJi Electric Co., Ltd., Yuncheng 044502, China
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1中车永济电机有限公司,山西 运城 044502
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1CRRC YongJi Electric Co., Ltd., Yuncheng 044502, China
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1中车永济电机有限公司,山西 运城 044502
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1CRRC YongJi Electric Co., Ltd., Yuncheng 044502, China
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1中车永济电机有限公司,山西 运城 044502
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2019., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1304923127474057749, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, xref=1, ext=[AuthorCompanyExt(id=1304923127495029270, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, companyId=1304923127474057749, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1CRRC YongJi Electric Co., Ltd., Yuncheng 044502, China), AuthorCompanyExt(id=1304923127503417879, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, companyId=1304923127474057749, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1中车永济电机有限公司,山西 运城 044502)]), AuthorCompany(id=1304923127574721048, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, xref=2, ext=[AuthorCompanyExt(id=1304923127583109657, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, companyId=1304923127574721048, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2轨道交通牵引电机山西省重点实验室,山西 运城 044502)])], figs=[ArticleFig(id=1304923129688650307, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.1, caption=
Schematic diagram of internal air gap in insulation, figureFileSmall=Kn3z5jAG6EJL7xL+V6uduA==, figureFileBig=pfcQMIydH7jxjXaY5DlWtA==, tableContent=null), ArticleFig(id=1304923129768342084, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图1, caption=
绝缘内部气隙示意图, figureFileSmall=Kn3z5jAG6EJL7xL+V6uduA==, figureFileBig=pfcQMIydH7jxjXaY5DlWtA==, tableContent=null), ArticleFig(id=1304923129999028805, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.2, caption=
Electric field distribution cloud map of the insulation structure at c=0.9 mm, figureFileSmall=aX2vDNBQTS46G4mNevCh2g==, figureFileBig=+46Gkho99dK5XzYYCV5NVg==, tableContent=null), ArticleFig(id=1304923130074526278, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图2, caption=
c=0.9 mm时绝缘结构的电场分布云图, figureFileSmall=aX2vDNBQTS46G4mNevCh2g==, figureFileBig=+46Gkho99dK5XzYYCV5NVg==, tableContent=null), ArticleFig(id=1304923130158412359, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.3, caption=
Electric field distribution cloud map of the insulation structure at c=0.99 mm, figureFileSmall=mOz+H9Td7auOLhqAy6r+0A==, figureFileBig=S7k0g2Kg1SnpsG6VK0LqoQ==, tableContent=null), ArticleFig(id=1304923130225521224, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图3, caption=
c=0.99 mm时绝缘结构的电场分布云图, figureFileSmall=mOz+H9Td7auOLhqAy6r+0A==, figureFileBig=S7k0g2Kg1SnpsG6VK0LqoQ==, tableContent=null), ArticleFig(id=1304923130301018697, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.4, caption=
The variation trend of air gap electric field with axial dimension b, figureFileSmall=xoOtvrVInclv0o0aEzWwKw==, figureFileBig=PpsIwJ36YryiihoFMoiB9g==, tableContent=null), ArticleFig(id=1304923130363933258, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图4, caption=
气隙电场随轴向尺寸b的变化趋势, figureFileSmall=xoOtvrVInclv0o0aEzWwKw==, figureFileBig=PpsIwJ36YryiihoFMoiB9g==, tableContent=null), ArticleFig(id=1304923130431042123, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.5, caption=
Fitting curve of air gap electric field and axial dimension b (a=0.01 mm), figureFileSmall=7V/jDugQ6WtUsa+/Mt4WzQ==, figureFileBig=7En66KB1g7but9kbFNRCYw==, tableContent=null), ArticleFig(id=1304923130510733900, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图5, caption=
气隙电场与轴向尺寸b的拟合曲线(a=0.01 mm), figureFileSmall=7V/jDugQ6WtUsa+/Mt4WzQ==, figureFileBig=7En66KB1g7but9kbFNRCYw==, tableContent=null), ArticleFig(id=1304923130611397197, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.6, caption=
Fitting curve of air gap electric field and axial dimension b (a=0.10 mm), figureFileSmall=y2IqhNJvwpqAG6bpqoDvcQ==, figureFileBig=LoCvlRACGAIFPRMlu7x14g==, tableContent=null), ArticleFig(id=1304923130686894670, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图6, caption=
气隙电场与轴向尺寸b的拟合曲线(a=0.10 mm), figureFileSmall=y2IqhNJvwpqAG6bpqoDvcQ==, figureFileBig=LoCvlRACGAIFPRMlu7x14g==, tableContent=null), ArticleFig(id=1304923130766586447, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.7, caption=
The variation trend of air gap electric field with radial dimension a, figureFileSmall=0XIEq4EXUbIxfJjNbVM/Dg==, figureFileBig=dxgSeFttthAKvpsFWs1DKg==, tableContent=null), ArticleFig(id=1304923130833695312, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图7, caption=
气隙电场随径向尺寸a的变化趋势, figureFileSmall=0XIEq4EXUbIxfJjNbVM/Dg==, figureFileBig=dxgSeFttthAKvpsFWs1DKg==, tableContent=null), ArticleFig(id=1304923130942747217, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.8, caption=
Fitting curve of air gap electric field and radial dimension a (b=0.10 mm), figureFileSmall=B7jHxsPmnjs1XsUAiB006g==, figureFileBig=RovHWjKQ6+3EOzeVt9537A==, tableContent=null), ArticleFig(id=1304923131009856082, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图8, caption=
气隙电场与径向尺寸a的拟合曲线(b=0.10 mm), figureFileSmall=B7jHxsPmnjs1XsUAiB006g==, figureFileBig=RovHWjKQ6+3EOzeVt9537A==, tableContent=null), ArticleFig(id=1304923131123102291, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.9, caption=
Fitting curve of air gap electric field and radial dimension a (b=1.00 mm), figureFileSmall=xhK/AHzjJsvLPJgESmo4UQ==, figureFileBig=mG1sLXdIAHyJw+sOg25r0A==, tableContent=null), ArticleFig(id=1304923131194405460, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图9, caption=
气隙电场与径向尺寸a的拟合曲线(b=1.00 mm), figureFileSmall=xhK/AHzjJsvLPJgESmo4UQ==, figureFileBig=mG1sLXdIAHyJw+sOg25r0A==, tableContent=null), ArticleFig(id=1304923131265708629, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.10, caption=
Local model specimen, figureFileSmall=blT1YlmMLyhUb2UoAskNUw==, figureFileBig=Lz151fO3ZLyebFhAfle1tA==, tableContent=null), ArticleFig(id=1304923131353789014, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图10, caption=
局部模型试样, figureFileSmall=blT1YlmMLyhUb2UoAskNUw==, figureFileBig=Lz151fO3ZLyebFhAfle1tA==, tableContent=null), ArticleFig(id=1304923131408314967, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.11, caption=
Test process, figureFileSmall=n9qadWtRpA+KCcENztauEQ==, figureFileBig=W9vTf/g3waTKOEgC9DaM3w==, tableContent=null), ArticleFig(id=1304923131475423832, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图11, caption=
试验流程, figureFileSmall=n9qadWtRpA+KCcENztauEQ==, figureFileBig=W9vTf/g3waTKOEgC9DaM3w==, tableContent=null), ArticleFig(id=1304923131538338393, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.12, caption=
PDIV change trend chart, figureFileSmall=L5XfKai3YDPLcg7BmLcJEg==, figureFileBig=3OeVa1LoeuxCOuuM4Pp7tg==, tableContent=null), ArticleFig(id=1304923131605447258, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图12, caption=
PDIV变化趋势图, figureFileSmall=L5XfKai3YDPLcg7BmLcJEg==, figureFileBig=3OeVa1LoeuxCOuuM4Pp7tg==, tableContent=null), ArticleFig(id=1304923131676750427, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.13, caption=
Dielectric loss factor trend chart, figureFileSmall=TRHbofY2PYS28Gdtk1fOsg==, figureFileBig=ELCsyZD2NYPV1A2FrZPmFQ==, tableContent=null), ArticleFig(id=1304923131743859292, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图13, caption=
介质损耗因数变化趋势图, figureFileSmall=TRHbofY2PYS28Gdtk1fOsg==, figureFileBig=ELCsyZD2NYPV1A2FrZPmFQ==, tableContent=null), ArticleFig(id=1304923131819356765, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Fig.14, caption=
The electrothermal ageing life of local model before and after thermal shock, figureFileSmall=RHtw5ZdD9XleEEuQH+gBww==, figureFileBig=ByN6rlSzo/FiHBU4gQ7vHQ==, tableContent=null), ArticleFig(id=1304923131899048542, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=图14, caption=
冷热冲击前后局部模型的电热老化寿命, figureFileSmall=RHtw5ZdD9XleEEuQH+gBww==, figureFileBig=ByN6rlSzo/FiHBU4gQ7vHQ==, tableContent=null), ArticleFig(id=1304923131966157407, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=EN, label=Table 1, caption=
Comparison of simulation and theoretical calculation results
, figureFileSmall=null, figureFileBig=null, tableContent=
| 气隙径向尺寸/mm | 电场强度/(kV/mm) |
|---|
| 仿真计算 | 理论计算 | 偏差/% |
|---|
| 0.10 | 气隙 | 7.616 | 7.5 | 1.5 |
| 绝缘 | 2.570 | 2.5 | 2.8 |
| 0.01 | 气隙 | 9.022 | 8.8 | 0.2 |
| 绝缘 | 2.894 | 2.9 | 1.3 |
), ArticleFig(id=1304923132045849184, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304923124051505654, language=CN, label=表1, caption=
仿真与理论计算结果对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 气隙径向尺寸/mm | 电场强度/(kV/mm) |
|---|
| 仿真计算 | 理论计算 | 偏差/% |
|---|
| 0.10 | 气隙 | 7.616 | 7.5 | 1.5 |
| 绝缘 | 2.570 | 2.5 | 2.8 |
| 0.01 | 气隙 | 9.022 | 8.8 | 0.2 |
| 绝缘 | 2.894 | 2.9 | 1.3 |
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