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In order to investigate the influences of dead time in power electronic pulse width modulation (PWM) algorithm on the properties of insulation for inverter-fed motor, we built a repetitive pulse generator with 2-10 μs of dead time using full-bridge solid-state switch and high speed and real time control technique. Under the bipolar repetitive pulse voltage with 4 kV of peak to peak voltage and 5 kHz of frequency, the effect of repetitive square wave voltage dead time on the partial discharge (PD) statistical characteristics and corona-resistant lifetime of inverter-fed motor insulation were investigated through turn to turn insulation tests and ultra-high frequency test. The results show that the increase of dead time may significantly increase the attenuation effect of surface discharge at the rising edge and falling edge of repetitive square wave, weakens the inhibition of surface charge reverse electric field on discharge in discharge process. The number of discharge increases, and the electrical ageing of insulation accelerates, which leads to the decrease of corona-resistant lifetime of turn to turn insulation for inverter-fed motor. It is concluded that when adding dead time to protect the power device in designing power electric system, we should pay attention to the effect of dead time on the accelerated ageing of insulation system in inverter-fed motor, increase the insulation margin properly.
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为研究电力电子脉宽调制(PWM)算法中死区时间对变频电机绝缘性能的影响,首先利用全桥固态开关和高速实时控制技术,搭建了死区时间在2~10 μs可调的重复脉冲发生器。在峰峰电压为4 kV、频率为 5 kHz双极性重复脉冲电压下,借助特高频测试方法,通过变频电机匝间绝缘试验,研究了重复方波电压死区时间对变频电机绝缘放电统计特征和耐电晕寿命的影响规律。结果表明:增加死区时间可以显著增大重复脉冲方波上升沿和下降沿处的表面电荷衰减效应,减弱了放电过程中表面电荷反向电场对放电过程的抑制作用,从而增加了放电数量,加速绝缘电老化,使变频电机匝间绝缘的耐电晕寿命显著降低。对此,在设计电力电子系统,加入死区时间保护功率器件的同时,必须考虑死区时间对变频电机绝缘系统的加速老化作用,以适当提高绝缘裕度。
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王鹏(1982-),男(汉族),四川成都人,副教授,主要从事新能源、电力电子装备中绝缘系统性能评估的研究。
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顾洋豪(1994-),男(汉族),四川成都人,硕士生,主要从事新能源、电力电子装备中绝缘系统性能评估的研究。
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The dead time schematic diagram, figureFileSmall=Zy4s/aMM9lX5KIW+Tu60rg==, figureFileBig=fq11VI4UjGJGIv1xGgyF9g==, tableContent=null), ArticleFig(id=1243119745852093173, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图1, caption=
死区时间示意图, figureFileSmall=Zy4s/aMM9lX5KIW+Tu60rg==, figureFileBig=fq11VI4UjGJGIv1xGgyF9g==, tableContent=null), ArticleFig(id=1243119745961145082, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.2, caption=
The schematic of repetitive impulsive generator, figureFileSmall=0bc+Q5kJEt4RMj9xOZ0zIg==, figureFileBig=H/AGiOuAeUInwaKdwleZvg==, tableContent=null), ArticleFig(id=1243119746061808386, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图2, caption=
重复脉冲电源原理图, figureFileSmall=0bc+Q5kJEt4RMj9xOZ0zIg==, figureFileBig=H/AGiOuAeUInwaKdwleZvg==, tableContent=null), ArticleFig(id=1243119746175054599, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.3, caption=
The repetitive impulsive generator, figureFileSmall=+BbDs9zG6/t3tKLjYD/uEA==, figureFileBig=Vp2HqK69wRrOTw3WNH/AsQ==, tableContent=null), ArticleFig(id=1243119746279912203, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图3, caption=
重复脉冲电源, figureFileSmall=+BbDs9zG6/t3tKLjYD/uEA==, figureFileBig=Vp2HqK69wRrOTw3WNH/AsQ==, tableContent=null), ArticleFig(id=1243119746384769806, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.4, caption=
Generation principle of repetitive pulsevoltage with dead time, figureFileSmall=HY6jOO4o3P8G2XQ684pqlA==, figureFileBig=Xou5YQq3gwFmHJpaREKtpg==, tableContent=null), ArticleFig(id=1243119746456072978, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图4, caption=
带死区时间的重复脉冲电压产生原理, figureFileSmall=HY6jOO4o3P8G2XQ684pqlA==, figureFileBig=Xou5YQq3gwFmHJpaREKtpg==, tableContent=null), ArticleFig(id=1243119746523181847, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.5, caption=
Charge and discharge circuit of sample, figureFileSmall=79LCO3MWogVsBkJR5vAbBw==, figureFileBig=5sLgW5mJ7naAsjEf2iW7dQ==, tableContent=null), ArticleFig(id=1243119746594485018, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图5, caption=
试样充放电回路, figureFileSmall=79LCO3MWogVsBkJR5vAbBw==, figureFileBig=5sLgW5mJ7naAsjEf2iW7dQ==, tableContent=null), ArticleFig(id=1243119746669982492, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.6, caption=
Corona resistance test system ofrepetitive pulse voltage, figureFileSmall=sp0y4ops/vIPxWlIfTvkdw==, figureFileBig=aPwwRQ22e+Gt/44nQTu/Cw==, tableContent=null), ArticleFig(id=1243119746737091359, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图6, caption=
重复脉冲电压耐电晕测试系统, figureFileSmall=sp0y4ops/vIPxWlIfTvkdw==, figureFileBig=aPwwRQ22e+Gt/44nQTu/Cw==, tableContent=null), ArticleFig(id=1243119746812588834, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.7, caption=
Sample and support, figureFileSmall=2yEadAd6XWMDekr4vGyvng==, figureFileBig=hGqwTzIKo7eTj1r+qtXTtw==, tableContent=null), ArticleFig(id=1243119746904863525, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图7, caption=
试样及支架, figureFileSmall=2yEadAd6XWMDekr4vGyvng==, figureFileBig=hGqwTzIKo7eTj1r+qtXTtw==, tableContent=null), ArticleFig(id=1243119746976166698, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.8, caption=
PD waveform received by UHF antenna, figureFileSmall=ceG8XE73ntm4NbtDkoxiUA==, figureFileBig=WwOrdJufQex6bXvaazUNrQ==, tableContent=null), ArticleFig(id=1243119747055858477, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图8, caption=
特高频天线采集的局部放电波形, figureFileSmall=ceG8XE73ntm4NbtDkoxiUA==, figureFileBig=WwOrdJufQex6bXvaazUNrQ==, tableContent=null), ArticleFig(id=1243119747143938867, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.9, caption=
Partial discharge phase distributionunder different dead time, figureFileSmall=cB9SHGV7ss7KSIyR1KVyIQ==, figureFileBig=f+CIBqGGxtdNUbM7WfLwVg==, tableContent=null), ArticleFig(id=1243119747223630647, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图9, caption=
不同死区时间下的放电相位分布图, figureFileSmall=cB9SHGV7ss7KSIyR1KVyIQ==, figureFileBig=f+CIBqGGxtdNUbM7WfLwVg==, tableContent=null), ArticleFig(id=1243119747324293950, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.10, caption=
Quantity statistics of partial discharge, figureFileSmall=qSXV/A4GZvSgKkGFGhMv0Q==, figureFileBig=eYI94uyuknnJoyugojxo/g==, tableContent=null), ArticleFig(id=1243119747433345853, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图10, caption=
局部放电数量统计, figureFileSmall=qSXV/A4GZvSgKkGFGhMv0Q==, figureFileBig=eYI94uyuknnJoyugojxo/g==, tableContent=null), ArticleFig(id=1243119747508843327, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.11, caption=
Corona-resistant life distribution under different dead time, figureFileSmall=kvk4j1MMU5/vgp+29Rt8hg==, figureFileBig=MpBjVaIn+QzpYgZ3Ec5sbA==, tableContent=null), ArticleFig(id=1243119747563369282, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图11, caption=
不同死区时间下的耐电晕寿命分布, figureFileSmall=kvk4j1MMU5/vgp+29Rt8hg==, figureFileBig=MpBjVaIn+QzpYgZ3Ec5sbA==, tableContent=null), ArticleFig(id=1243119747643061061, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.12, caption=
Breakdown surface of enameled wires atpulse voltage with different dead time, figureFileSmall=VDJ1650GW8RjZ+aJf4jPfQ==, figureFileBig=7HLCf7d8nr3q7KCHu77wsg==, tableContent=null), ArticleFig(id=1243119747731141447, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图12, caption=
不同死区时间脉冲电压下漆包线的击穿表面, figureFileSmall=VDJ1650GW8RjZ+aJf4jPfQ==, figureFileBig=7HLCf7d8nr3q7KCHu77wsg==, tableContent=null), ArticleFig(id=1243119749228507977, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.13, caption=
Surface charge and field strength in the air gap, figureFileSmall=uf945/ih/+a4v2BMaT30qQ==, figureFileBig=jRP1tVGIT7JkghzD5ayx2g==, tableContent=null), ArticleFig(id=1243119749329171276, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图13, caption=
表面电荷和气隙内场强, figureFileSmall=uf945/ih/+a4v2BMaT30qQ==, figureFileBig=jRP1tVGIT7JkghzD5ayx2g==, tableContent=null), ArticleFig(id=1243119749455000399, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.14, caption=
The electric field of discharge procedure at repetitive square voltage with deadtimes, figureFileSmall=R5m+KQUJXAR6Du/LJXKS0g==, figureFileBig=zeiAf4tgyZFej5ZZOfTQpA==, tableContent=null), ArticleFig(id=1243119749572440914, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图14, caption=
带死区时间的重复脉冲电压下的电场变化过程, figureFileSmall=R5m+KQUJXAR6Du/LJXKS0g==, figureFileBig=zeiAf4tgyZFej5ZZOfTQpA==, tableContent=null), ArticleFig(id=1243119749673104211, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.15, caption=
Partial discharge in one square wave cycle, figureFileSmall=Tqi2DGoc/sDRVb4E1ysqYg==, figureFileBig=VUW+v9np3rMVmz0SOkBDlw==, tableContent=null), ArticleFig(id=1243119749769573205, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图15, caption=
一个方波周期内放电过程, figureFileSmall=Tqi2DGoc/sDRVb4E1ysqYg==, figureFileBig=VUW+v9np3rMVmz0SOkBDlw==, tableContent=null), ArticleFig(id=1243119749857653593, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.16, caption=
Trend of discharge, figureFileSmall=JC+MYmKcaYKGY6Fd9JPd4A==, figureFileBig=yFUxbv1PQf1EOhckj8EvnA==, tableContent=null), ArticleFig(id=1243119749937345371, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图16, caption=
放电变化趋势, figureFileSmall=JC+MYmKcaYKGY6Fd9JPd4A==, figureFileBig=yFUxbv1PQf1EOhckj8EvnA==, tableContent=null), ArticleFig(id=1243119750017037149, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.17, caption=
Trend of discharge amplitude, figureFileSmall=sr+GjcCW7IvxnhlIyvpq/Q==, figureFileBig=oHuSHVW9uQgCs9XjfOufiA==, tableContent=null), ArticleFig(id=1243119750092534623, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图17, caption=
放电幅值变化趋势, figureFileSmall=sr+GjcCW7IvxnhlIyvpq/Q==, figureFileBig=oHuSHVW9uQgCs9XjfOufiA==, tableContent=null), ArticleFig(id=1243119750163837793, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=EN, label=Fig.18, caption=
Trend of discharge number, figureFileSmall=4WauVl6munJBwLolkWm2kw==, figureFileBig=RB9ci1h6bdcXrSJyC/C/Sw==, tableContent=null), ArticleFig(id=1243119750243529573, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1222495716791018165, language=CN, label=图18, caption=
放电数量变化趋势, figureFileSmall=4WauVl6munJBwLolkWm2kw==, figureFileBig=RB9ci1h6bdcXrSJyC/C/Sw==, tableContent=null)], attaches=null, journal=Journal(id=1146437660891000859, delFlag=0, nameCn=绝缘材料, nameEn=Insulating Materials, nameHistory1=null, nameHistory2=null, issn=1009-9239, eissn=null, cn=45-1287/TM, coden=null, periodic=0, language=CN, oaType=是, ccby=CC BY-NC-ND, superviseOffice=null, ownerOffice=null, pubOffice=null, editorOffice=null, officeType=null, aims=null, clcCode=null, officeProv=null, officeCity=null, officeAddr=null, officeZip=null, officeEmail=null, officePhone=null, editDirector=null, officeDirector=null, officeDirectorPhone=null, officeStaffNum=null, officeEmpNum=null, coverPicUrl=To3JhdgsOj1Q7eh5WnUN1g==, journalPrice=null, startedYear=null, abbrevIsoEn=null, journalRemark=null, publicationField=null, createdTime=1751261638140, updatedTime=1761735740591, createdBy=18614031015, updatedBy=13701087609, firstLetterCn=I, firstLetterEn=I, subjectCode=Natural Sciences, 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