Article(id=1192092479261393370, tenantId=1146029695717560320, journalId=1190306094246359042, issueId=1192092478032462291, articleNumber=null, orderNo=null, doi=10.19595/j.cnki.1000-6753.tces.240477, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1711382400000, receivedDateStr=2024-03-26, revisedDate=1717430400000, revisedDateStr=2024-06-04, acceptedDate=null, acceptedDateStr=null, onlineDate=1762146595062, onlineDateStr=2025-11-03, pubDate=1745510400000, pubDateStr=2025-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762146595062, onlineIssueDateStr=2025-11-03, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762146595062, creator=13701087609, updateTime=1762146595062, 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=2587, endPage=2600, ext={EN=ArticleExt(id=1192092479554994652, articleId=1192092479261393370, tenantId=1146029695717560320, journalId=1190306094246359042, language=EN, title=Narrow Pulse Suppression Strategy of Three-Level Converter Considering Digital Control Discreteness in Low Modulation Index Region, columnId=null, journalTitle=Transactions of China Electrotechnical Society, columnName=null, runingTitle=null, highlight=null, articleAbstract=
During the charging process of flywheel driving by permanent magnet synchronous motor, the three-level converter operates in a low modulation index for a long time, and the traditional virtual space vector pulse width modulation (VSVPWM) strategy frequently generates narrow pulses. Due to the discrete nature of digital control, the sector boundaries in the traditional VSVPWM strategy can shift, exacerbating the narrow pulse issue. These narrow pulses lead to significant distortion in the voltage and current waveforms of the converter and even damage the power devices.
This paper proposed an analysis method considering the discreteness of motor digital control and a hybrid VSVPWM strategy based on vector sequence optimization. Firstly, the variation characteristics of the voltage reference vector and its influence on sector boundary under digital control were studied based on the steady-state mathematical model of the motor. Then, the minimum pulse width function was established to quantitatively analyze the distribution of narrow pulses in the traditional VSVPWM within the low modulation index region. Consequently, according to the narrow pulse distribution law, a hybrid VSVPWM strategy based on vector sequence optimization was proposed.
The traditional VSVPWM (Seg9_VSVPWM), the thirteen-segment VSVPWM (Seg13_VSVPWM), and the proposed hybrid VSVPWM (LH_VSVPWM) were compared. The simulation results show that when the modulation index is 0.1 and 0.3, Seg9_VSVPWM continuously presents narrow pulses less than 2 μs at the boundary between sectors F and A with 672 and 219 times within 1 s. When the modulation index is 0.5, Seg13_VSVPWM would produce the narrowest pulses and accumulate 1 102 times within 1s. However, when the modulation index is 0.1, the proposed LH_VSVPWM eliminates the narrow pulse by optimizing the vector sequence. In addition, LH_VSVPWM has the fewest switching action times in the modulation index of 0.3 and 0.5, which is 5 836 and 5 875 times in 1s, respectively. Meanwhile, the proposed strategy performs well in limiting narrow pulses, occurring only 11 and 32 times within 1 s. The experimental results further demonstrate that LH_VSVPWM can effectively suppress the narrow pulse and keep the minimum pulse width above 6 μs in low modulation index region. Moreover, LH_VSVPWM improves the three-level converter’s output current waveform quality, with THD values of 22.24%, 13.78%, and 17.47% in the modulation index of 0.1, 0.3, and 0.5, respectively. It is the lowest among the three modulation strategies. Compared with Seg9_VSVPWM, the proposed LH_VSVPWM keeps the neutral-point potential balanced during motor start.
The following conclusions can be drawn. (1) The discreteness of motor digital control affects the variation characteristics of the voltage reference voltage and sector boundary of VSVPWM, which aggravates the narrow pulse problem. (2) In the low modulation index region of three-level converters, the effective vector durations are short, and the first vector of switching sequence changes between sectors F and A, B and C, and D and E. Therefore, the traditional VSVPWM maximum coding vectors are prone to narrow pulses at the boundary of these sectors. (3) The proposed method effectively suppresses the narrow pulse and reduces the switching times of power devices. Besides, LH_VSVPWM improves output waveform quality and solves the problem of neutral-point potential imbalance during motor startup.
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永磁同步电机拖动大惯量飞轮充能过程,三电平变流器长时间处于低调制比状态,经典虚拟空间矢量调制策略会频繁出现窄脉冲,进而导致电压电流波形畸变、功率器件损坏以及电机起动瞬间中点电位失控等问题。针对以上问题,该文提出考虑永磁同步电机控制离散性的窄脉冲分析方法,定量分析经典虚拟空间矢量调制算法在低调制比区域的窄脉冲分布规律。在此基础上,提出一种基于矢量序列优化的混合虚拟空间矢量调制策略,实现了三电平变流器低调制比区域窄脉冲抑制。仿真和实验结果表明,该方法不仅有效抑制了窄脉冲、改善电流波形质量,也降低了三电平变流器开关动作次数,解决了电机起动瞬间中点电位失控的问题。
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, authorsList=陈凯, 温旭辉, 李文善, 张剑, 沈琳)}, authors=[Author(id=1192093779373998568, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=chenkai@mail.iee.ac.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1192093779453690348, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, authorId=1192093779373998568, language=EN, stringName=Kai Chen, firstName=Kai, middleName=null, lastName=Chen, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=1. Key Laboratory of High Density Electromagnetic Power and Systems Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China
2. University of Chinese Academy of Sciences Beijing 100049 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1192093779587908078, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, authorId=1192093779373998568, language=CN, stringName=陈凯, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=1.高密度电磁动力与系统重点实验室(中国科学院电工研究所) 北京 100190
2.中国科学院大学 北京 100049, bio={"content":"
陈 凯 男,1998年生,博士研究生,研究方向为电机控制及电力电子。E-mail: chenkai@mail.iee.ac.cn
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陈 凯 男,1998年生,博士研究生,研究方向为电机控制及电力电子。E-mail: chenkai@mail.iee.ac.cn
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1, 2, address=1. Key Laboratory of High Density Electromagnetic Power and Systems Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China
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1, 2, address=1.高密度电磁动力与系统重点实验室(中国科学院电工研究所) 北京 100190
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AC grid-connected flywheel energy storage unit, figureFileSmall=fMcXXkErGaPLCZTz6zC6zw==, figureFileBig=gkxAay5WgjwwRdURlbnNRQ==, tableContent=null), ArticleFig(id=1192093781626339886, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图1, caption=
交流并网的飞轮储能单元, figureFileSmall=fMcXXkErGaPLCZTz6zC6zw==, figureFileBig=gkxAay5WgjwwRdURlbnNRQ==, tableContent=null), ArticleFig(id=1192093781823472178, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.2, caption=
Discrete variation characteristics of voltage reference vector and its sector boundary region, figureFileSmall=mMeOuluqB9fV8o+BojkY4g==, figureFileBig=U7s7Gtx1bW5EN6amgENFUA==, tableContent=null), ArticleFig(id=1192093781894775348, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图2, caption=
参考矢量离散变化特性及扇区边界区域, figureFileSmall=mMeOuluqB9fV8o+BojkY4g==, figureFileBig=U7s7Gtx1bW5EN6amgENFUA==, tableContent=null), ArticleFig(id=1192093781970272822, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.3, caption=
The switch pattern from region F1 to A1, figureFileSmall=/YtHGhBeUWLKMO3h7C023Q==, figureFileBig=jBvJs25/8UTFX3dMDssOCw==, tableContent=null), ArticleFig(id=1192093782058353208, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图3, caption=
F1区域切换至A1区域开关序列, figureFileSmall=/YtHGhBeUWLKMO3h7C023Q==, figureFileBig=jBvJs25/8UTFX3dMDssOCw==, tableContent=null), ArticleFig(id=1192093782146433594, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.4, caption=
Boundary region division of all sectors considering the discreteness of motor control, figureFileSmall=VGL3KcKpJOp9KfIz0WcV1Q==, figureFileBig=MItlePOlJ0WiTcnO1eIddg==, tableContent=null), ArticleFig(id=1192093782213542460, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图4, caption=
考虑控制离散性的全扇区边界区域划分, figureFileSmall=VGL3KcKpJOp9KfIz0WcV1Q==, figureFileBig=MItlePOlJ0WiTcnO1eIddg==, tableContent=null), ArticleFig(id=1192093782284845630, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.5, caption=
The virtual space vector in region A and the enlarged map of region A1, figureFileSmall=fwJ+OtFefxzvknrnNjgSqA==, figureFileBig=PhZ/91NnKf4FtLteq3Lawg==, tableContent=null), ArticleFig(id=1192093782335177280, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图5, caption=
A扇区虚拟空间矢量及A1区域放大图, figureFileSmall=fwJ+OtFefxzvknrnNjgSqA==, figureFileBig=PhZ/91NnKf4FtLteq3Lawg==, tableContent=null), ArticleFig(id=1192093783371170370, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.6, caption=
Narrow pulse limited region in A1F, figureFileSmall=ooRc93gUSNiTbPnqfi+dUw==, figureFileBig=DojBmL04yWwqwtgvAE1mcg==, tableContent=null), ArticleFig(id=1192093783467639364, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图6, caption=
A1F区域窄脉冲限制区, figureFileSmall=ooRc93gUSNiTbPnqfi+dUw==, figureFileBig=DojBmL04yWwqwtgvAE1mcg==, tableContent=null), ArticleFig(id=1192093783606051398, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.7, caption=
Switch pattern between adjacent period in region A1A, figureFileSmall=E5hCvfzenlVUiZ4zj00bOQ==, figureFileBig=ThPcOhuhnP2LXLdCg/W5fQ==, tableContent=null), ArticleFig(id=1192093783656383048, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图7, caption=
A1A区域相邻周期矢量序列, figureFileSmall=E5hCvfzenlVUiZ4zj00bOQ==, figureFileBig=ThPcOhuhnP2LXLdCg/W5fQ==, tableContent=null), ArticleFig(id=1192093783731880522, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.8, caption=
Narrow pulse limited region in A1A, figureFileSmall=69TTajWvYEqAJudxa9mvUg==, figureFileBig=qC9Rti9tmPxJ0flN//xylQ==, tableContent=null), ArticleFig(id=1192093783807377996, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图8, caption=
A1A区域窄脉冲限制区, figureFileSmall=69TTajWvYEqAJudxa9mvUg==, figureFileBig=qC9Rti9tmPxJ0flN//xylQ==, tableContent=null), ArticleFig(id=1192093783874486862, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.9, caption=
The switch pattern from region A1 to B1, figureFileSmall=7+SSwUn22mHbpsm3jXuwDA==, figureFileBig=yaHMW4btYxtOfqGPIvL59g==, tableContent=null), ArticleFig(id=1192093783954178640, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图9, caption=
A1区域切换至B1区域矢量序列, figureFileSmall=7+SSwUn22mHbpsm3jXuwDA==, figureFileBig=yaHMW4btYxtOfqGPIvL59g==, tableContent=null), ArticleFig(id=1192093784012898898, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.10, caption=
Narrow pulse limited region of maximum encoding vector in low modulation index region, figureFileSmall=gxUv+QTkM8LgOYvffEcKVw==, figureFileBig=38LJABgAYJQTU69N6IwA5Q==, tableContent=null), ArticleFig(id=1192093784080007764, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图10, caption=
低调制比区域最大编码矢量窄脉冲限制区, figureFileSmall=gxUv+QTkM8LgOYvffEcKVw==, figureFileBig=38LJABgAYJQTU69N6IwA5Q==, tableContent=null), ArticleFig(id=1192093784142922326, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.11, caption=
Fine partition in region A1, figureFileSmall=igHj3E54iNOqB+VoFCEJeA==, figureFileBig=CrlaLNJjBpGBm/Ox+SQryw==, tableContent=null), ArticleFig(id=1192093784197448280, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图11, caption=
A1区域精细化分区, figureFileSmall=igHj3E54iNOqB+VoFCEJeA==, figureFileBig=CrlaLNJjBpGBm/Ox+SQryw==, tableContent=null), ArticleFig(id=1192093784344248922, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.12, caption=
Switch pattern of LH_VSVPWM in region A1, figureFileSmall=JGV5mL3G0JcpCQwNU/DIlA==, figureFileBig=ifVU2pK33aot9P4Tg7EA/g==, tableContent=null), ArticleFig(id=1192093784394580572, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图12, caption=
A1区LH_VSVPWM矢量序列, figureFileSmall=JGV5mL3G0JcpCQwNU/DIlA==, figureFileBig=ifVU2pK33aot9P4Tg7EA/g==, tableContent=null), ArticleFig(id=1192093784470078046, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.13, caption=
Narrow pulse analysis of LH_VSVPWM strategy, figureFileSmall=n97g+1XQaibJR4XWMaBLzA==, figureFileBig=bmq7VRHaC/upk9m637xwyw==, tableContent=null), ArticleFig(id=1192093784574935648, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图13, caption=
LH_VSVPWM窄脉冲分析, figureFileSmall=n97g+1XQaibJR4XWMaBLzA==, figureFileBig=bmq7VRHaC/upk9m637xwyw==, tableContent=null), ArticleFig(id=1192093784658821729, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.14, caption=
Neutral-point potential deviation of LH_VSVPWM, figureFileSmall=jYzYK4wNOEGvcfPsHDwNvQ==, figureFileBig=ot7peX8bZmDVcWkc7DXo1g==, tableContent=null), ArticleFig(id=1192093784746902115, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图14, caption=
LH_VSVPWM矢量序列中点电位偏差, figureFileSmall=jYzYK4wNOEGvcfPsHDwNvQ==, figureFileBig=ot7peX8bZmDVcWkc7DXo1g==, tableContent=null), ArticleFig(id=1192093784834982501, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.15, caption=
Simulation results under modulation index 0.1, figureFileSmall=G1Se2moA72g5FXzzLkWjaw==, figureFileBig=lsyxKz6ahKWVMKeXitVciA==, tableContent=null), ArticleFig(id=1192093784893702759, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图15, caption=
调制比0.1时开关器件VTb1仿真结果, figureFileSmall=G1Se2moA72g5FXzzLkWjaw==, figureFileBig=lsyxKz6ahKWVMKeXitVciA==, tableContent=null), ArticleFig(id=1192093784985977449, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.16, caption=
Simulation results under modulation index 0.3, figureFileSmall=4cG2yRAG57hJ2AYSXf9awA==, figureFileBig=Ri/vvtnRk1sFhMDAnzCCjQ==, tableContent=null), ArticleFig(id=1192093785111806571, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图16, caption=
调制比0.3时开关器件VTb1仿真结果, figureFileSmall=4cG2yRAG57hJ2AYSXf9awA==, figureFileBig=Ri/vvtnRk1sFhMDAnzCCjQ==, tableContent=null), ArticleFig(id=1192093785204081261, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.17, caption=
Simulation results under modulation index 0.5, figureFileSmall=4Jonlsijn3NSAe+sm8ctvA==, figureFileBig=Y0LtbdD0Frz+v4YDviaZGQ==, tableContent=null), ArticleFig(id=1192093785287967343, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图17, caption=
调制比0.5时开关器件VTc1仿真结果, figureFileSmall=4Jonlsijn3NSAe+sm8ctvA==, figureFileBig=Y0LtbdD0Frz+v4YDviaZGQ==, tableContent=null), ArticleFig(id=1192093785363464817, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.18, caption=
The number of switch and narrow pulse in 1 s, figureFileSmall=y84n0/0ZTyy9NEVAZ2ML5Q==, figureFileBig=u10nVH9/X+eTMEGA5IEwgQ==, tableContent=null), ArticleFig(id=1192093785430573683, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图18, caption=
1 s内开关动作次数及窄脉冲个数, figureFileSmall=y84n0/0ZTyy9NEVAZ2ML5Q==, figureFileBig=u10nVH9/X+eTMEGA5IEwgQ==, tableContent=null), ArticleFig(id=1192093785506071157, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.19, caption=
DNPC three-level inverter experimental platform, figureFileSmall=rg1vaI0WxJy9cxmaHiT9zA==, figureFileBig=jpqJyeOKHvt/lRMRwusEfg==, tableContent=null), ArticleFig(id=1192093785564791415, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图19, caption=
DNPC三电平逆变器实验平台, figureFileSmall=rg1vaI0WxJy9cxmaHiT9zA==, figureFileBig=jpqJyeOKHvt/lRMRwusEfg==, tableContent=null), ArticleFig(id=1192093785657066105, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.20, caption=
Comparison of experimental results during motor starting process, figureFileSmall=lNqLsOLKCOVkL8Pr1iGoEg==, figureFileBig=0+/1mhfl9NYwcILc6tml4A==, tableContent=null), ArticleFig(id=1192093785715786363, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图20, caption=
电机起动瞬间实验结果对比, figureFileSmall=lNqLsOLKCOVkL8Pr1iGoEg==, figureFileBig=0+/1mhfl9NYwcILc6tml4A==, tableContent=null), ArticleFig(id=1192093785799672445, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.21, caption=
Comparison of experimental results under modulation index 0.1, figureFileSmall=aDGimN9L7TZKRBl6QQfsQg==, figureFileBig=I3vvSBMNoVrUwSXHkqONHg==, tableContent=null), ArticleFig(id=1192093785866781311, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图21, caption=
调制比0.1实验结果对比, figureFileSmall=aDGimN9L7TZKRBl6QQfsQg==, figureFileBig=I3vvSBMNoVrUwSXHkqONHg==, tableContent=null), ArticleFig(id=1192093785933890177, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.22, caption=
Comparison of experimental results under modulation index 0.3, figureFileSmall=2pTGr6AU0yfRW/NQrl09Ow==, figureFileBig=JJKEiAu05lFb2i1psFXdBw==, tableContent=null), ArticleFig(id=1192093785988416130, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图22, caption=
调制比0.3实验结果对比, figureFileSmall=2pTGr6AU0yfRW/NQrl09Ow==, figureFileBig=JJKEiAu05lFb2i1psFXdBw==, tableContent=null), ArticleFig(id=1192093786059719300, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Fig.23, caption=
Comparison of experimental results under modulation index 0.5, figureFileSmall=bjgDTsonQZ+RsJu/xDkqMQ==, figureFileBig=bIlyAsBm0LmAOQBPUFrJbw==, tableContent=null), ArticleFig(id=1192093786135216774, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=图23, caption=
调制比0.5实验结果对比, figureFileSmall=bjgDTsonQZ+RsJu/xDkqMQ==, figureFileBig=bIlyAsBm0LmAOQBPUFrJbw==, tableContent=null), ArticleFig(id=1192093786198131336, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Tab.1, caption=
Neutral-point currents of short vectors in region A1
, figureFileSmall=null, figureFileBig=null, tableContent=
| 小矢量 | inp |
| POO | -ia |
| PPO | ic |
| ONN | ia |
| OON | -ic |
), ArticleFig(id=1192093786319766154, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=表1, caption=
A1区域小矢量作用时中点电流
, figureFileSmall=null, figureFileBig=null, tableContent=
| 小矢量 | inp |
| POO | -ia |
| PPO | ic |
| ONN | ia |
| OON | -ic |
), ArticleFig(id=1192093786382680716, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Tab.2, caption=
Comparison of neutral-point potential deviation considering the effect of narrow pulse
, figureFileSmall=null, figureFileBig=null, tableContent=
| A1区域 | LH_VSVPWM | 经典VSVPWM |
| A1-1 | 0 | 0 |
| A1-2 | 0 | -icTzS2/2-iaTzS1/2 |
| A1-3 | -icTzS2 | -icTzS2/2 |
| A1-4 | -iaTzS1 | -iaTzS1/2 |
), ArticleFig(id=1192093786533675662, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=表2, caption=
考虑窄脉冲影响的中点电位偏差对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| A1区域 | LH_VSVPWM | 经典VSVPWM |
| A1-1 | 0 | 0 |
| A1-2 | 0 | -icTzS2/2-iaTzS1/2 |
| A1-3 | -icTzS2 | -icTzS2/2 |
| A1-4 | -iaTzS1 | -iaTzS1/2 |
), ArticleFig(id=1192093786609173136, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Tab.3, caption=
Experimental parameter
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| 参 数 | 数 值 |
| 母线电压/V | 270 |
| 开关频率/kHz | 10 |
| 死区时间/μs | 2 |
| 最小脉宽限制/μs | 2 |
| 电机额定功率/kW | 3.8 |
| 电机额定转速/(r/min) | 2 500 |
| 电机极对数 | 4 |
| 负载电阻/Ω | 10 |
), ArticleFig(id=1192093786688864914, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=表3, caption=
实验参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参 数 | 数 值 |
| 母线电压/V | 270 |
| 开关频率/kHz | 10 |
| 死区时间/μs | 2 |
| 最小脉宽限制/μs | 2 |
| 电机额定功率/kW | 3.8 |
| 电机额定转速/(r/min) | 2 500 |
| 电机极对数 | 4 |
| 负载电阻/Ω | 10 |
), ArticleFig(id=1192093786751779475, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=EN, label=Tab.4, caption=
Summary of experimental results
, figureFileSmall=null, figureFileBig=null, tableContent=
| 调制比m | 调制策略 | 窄脉冲 | 开关次数 | 电流THD(%) |
| 0.1 | Seg9_VSVPWM | 频繁 | 最少 | 22.87 |
| Seg13_VSVPWM | 无 | 多 | 22.52 |
| LH_VSVPWM | 无 | 多 | 22.24 |
| 0.3 | Seg9_VSVPWM | 较多 | 少 | 15.07 |
| Seg13_VSVPWM | 无 | 最多 | 15.84 |
| LH_VSVPWM | 极少 | 最少 | 13.78 |
| 0.5 | Seg9_VSVPWM | 较多 | 少 | 20.25 |
| Seg13_VSVPWM | 频繁 | 最多 | 23.50 |
| LH_VSVPWM | 极少 | 最少 | 17.47 |
), ArticleFig(id=1192093786848248469, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1192092479261393370, language=CN, label=表4, caption=
实验结果总结
, figureFileSmall=null, figureFileBig=null, tableContent=
| 调制比m | 调制策略 | 窄脉冲 | 开关次数 | 电流THD(%) |
| 0.1 | Seg9_VSVPWM | 频繁 | 最少 | 22.87 |
| Seg13_VSVPWM | 无 | 多 | 22.52 |
| LH_VSVPWM | 无 | 多 | 22.24 |
| 0.3 | Seg9_VSVPWM | 较多 | 少 | 15.07 |
| Seg13_VSVPWM | 无 | 最多 | 15.84 |
| LH_VSVPWM | 极少 | 最少 | 13.78 |
| 0.5 | Seg9_VSVPWM | 较多 | 少 | 20.25 |
| Seg13_VSVPWM | 频繁 | 最多 | 23.50 |
| LH_VSVPWM | 极少 | 最少 | 17.47 |
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