Article(id=1149769464507450342, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149769458706723113, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2404623, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1719590400000, receivedDateStr=2024-06-29, revisedDate=1740412800000, revisedDateStr=2025-02-25, acceptedDate=null, acceptedDateStr=null, onlineDate=1752056002021, onlineDateStr=2025-07-09, pubDate=1747497600000, pubDateStr=2025-05-18, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752056002021, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752056002021, creator=13701087609, updateTime=1752056002021, updator=13701087609, issue=Issue{id=1149769458706723113, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='14', pageStart='5705', pageEnd='6154', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752056000638, creator=13701087609, updateTime=1768456798957, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1218559392753041779, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149769458706723113, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1218559392753041780, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149769458706723113, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=5877, endPage=5885, ext={EN=ArticleExt(id=1149769464725554152, articleId=1149769464507450342, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Fuzzy Adaptive Control Strategy Based on Parameter Optimization of Virtual Synchronous Generator, columnId=1156262733675876713, journalTitle=Science Technology and Engineering, columnName=Papers·Electrical Technology, runingTitle=null, highlight=null, articleAbstract=

Aiming at the problems of poor disturbance immunity and long dynamic response time of the grid-connected inverter based on VSG(virtual synchronous generator) control, an improved fuzzy adaptive control strategy for VSG was proposed. First, a small-signal model of VSG was established to analyze the effects of virtual inertia and damping coefficient on the dynamic response of the system. Determine the value range of the two parameters and use the sparrow search algorithm to optimize the initial values of inertia and damping in the adaptive strategy. Next, the angular frequency change curve of the system after perturbation was analyzed to refine the design fuzzy rules. Finally, a stand-alone VSG model was built in MATLAB/Simulink to compare the different control strategies. The results show that the fuzzy adaptive strategy proposed in this paper not only improves the response speed of the system, but also has a strong anti-disturbance ability when the command power and load power change suddenly. The effectiveness of this paper's strategy is proved.

, correspAuthors=Abuduwayiti XIWANG, 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, authorCompany=null, fund=null, authors=null, authorsList=Yun-long FENG, Abuduwayiti XIWANG), CN=ArticleExt(id=1149769509046763792, articleId=1149769464507450342, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=基于虚拟同步发电机参数优化的模糊自适应控制策略, columnId=1156262734506353627, journalTitle=科学技术与工程, columnName=论文·电工技术, runingTitle=null, highlight=null, articleAbstract=针对基于虚拟同步发电机(virtual synchronous generator, VSG)控制的并网逆变器存在的抗扰能力差和动态响应时间长的问题,提出了一种VSG的改进模糊自适应控制策略。首先,建立VSG小信号模型,分析虚拟惯量与阻尼系数对系统动态响应的影响。确定两参数取值范围并利用麻雀搜索算法对自适应策略中惯量和阻尼的初始值寻优。其次,分析系统受扰动后的角频率变化曲线,细化设计模糊规则。最后,在MATLAB/Simulink中搭建单机VSG模型,将不同控制策略进行对比。结果表明:在指令功率和负载功率突变时,本文所提模糊自适应策略不仅提高了系统响应速度,且抗扰动能力强。证明了研究成果的有效性。, correspAuthors=希望·阿不都瓦依提, authorNote=null, correspAuthorsNote=
*希望·阿不都瓦依提(1967—),男,维吾尔族,新疆乌鲁木齐人,博士,副教授。研究方向:电力电子技术及多种可再生能源互补发电。E-mail:
, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=AkvusQV0NMshQftm2JAtfg==, magXml=HDmYEgNl/kVnifiXdAqwiw==, pdfUrl=null, pdf=NIWID898eRQe8+iERpLc0g==, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=tiiGrJiaVDnaVsgPVLFRJg==, mapNumber=null, authorCompany=null, fund=null, authors=

冯云龙(1998—),男,汉族,河南郑州人,硕士研究生。研究方向:新能源发电与并网技术。E-mail:

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冯云龙(1998—),男,汉族,河南郑州人,硕士研究生。研究方向:新能源发电与并网技术。E-mail:

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冯云龙(1998—),男,汉族,河南郑州人,硕士研究生。研究方向:新能源发电与并网技术。E-mail:

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i L , a b c e a b c为逆变器的输出电流和电势; i o , a b c u o , a b c为VSG机端输出电流和电压; R f L f C f分别为滤波器的电阻、电感和电容; Z g为网侧阻抗; i L d * i L q *为逆变器输出电流的 d q轴参考值; P e Q e为VSG输出有功和无功功率的测量值; θ E m为VSG的输出相角和电压幅值

, figureFileSmall=9Hpeq7NGPamPAEoQbxpgzg==, figureFileBig=iXOevYbjhBMtiYH6BF+7KA==, tableContent=null), ArticleFig(id=1179433835247842258, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Fig.2, caption=Active and reactive power control schematic for VSG, figureFileSmall=tWxDojkNsYZhlyD56PULqw==, figureFileBig=MD5ACCZezzf0rMO7l+0wbA==, tableContent=null), ArticleFig(id=1179433835306562515, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=图2, caption=VSG的有功和无功控制原理图

1/s为积分环节

, figureFileSmall=tWxDojkNsYZhlyD56PULqw==, figureFileBig=MD5ACCZezzf0rMO7l+0wbA==, tableContent=null), ArticleFig(id=1179433835373671380, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Fig.3, caption=VSG grid-connected equivalent circuit, figureFileSmall=Y+OhWFRDmYOnBNv7Y6iGYA==, figureFileBig=QXFpI4b3FMC+kSbpB6dIwA==, tableContent=null), ArticleFig(id=1179433835432391637, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=图3, caption=VSG并网等效电路, figureFileSmall=Y+OhWFRDmYOnBNv7Y6iGYA==, figureFileBig=QXFpI4b3FMC+kSbpB6dIwA==, tableContent=null), ArticleFig(id=1179433835491111894, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Fig.4, caption=Small-signal model for active power control of VSGs, figureFileSmall=L0uQNy9WresFCrqNkBPmgA==, figureFileBig=YzxgWXkfzWIxKPgB7ZQ+OA==, tableContent=null), 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label=Fig.6, caption=Frequency output response curves, figureFileSmall=Ge3ZCL/FDe6fOQQJQUwXEg==, figureFileBig=wuYrPtMCRaY3uSy6Ev0azA==, tableContent=null), ArticleFig(id=1179433835784713179, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=图6, caption=频率输出响应曲线, figureFileSmall=Ge3ZCL/FDe6fOQQJQUwXEg==, figureFileBig=wuYrPtMCRaY3uSy6Ev0azA==, tableContent=null), ArticleFig(id=1179433835847627740, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Fig.7, caption=Root trajectory diagram, figureFileSmall=SblmG+BIchz2/IMXsN6OyA==, figureFileBig=YgujiJmqHFiDct4hq7E+Vg==, tableContent=null), ArticleFig(id=1179433835914736605, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=图7, caption=根轨迹图, figureFileSmall=SblmG+BIchz2/IMXsN6OyA==, figureFileBig=YgujiJmqHFiDct4hq7E+Vg==, tableContent=null), 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tableContent=null), ArticleFig(id=1179433836439024613, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=图11, caption=适应度函数曲线对比图, figureFileSmall=QkEKVoTAib4egQ8VfGsksA==, figureFileBig=obLuLS5ih2NpxHUiO7e+MQ==, tableContent=null), ArticleFig(id=1179433836527104998, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Fig.12, caption=Comparison of output curves of different controls for command power change, figureFileSmall=uj0+wgicnGe99vikd+Vx4w==, figureFileBig=567Q09MWx90XHVNsmDT3oQ==, tableContent=null), ArticleFig(id=1179433836644545511, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=图12, caption=指令功率变化时不同控制的输出曲线对比, figureFileSmall=uj0+wgicnGe99vikd+Vx4w==, figureFileBig=567Q09MWx90XHVNsmDT3oQ==, tableContent=null), ArticleFig(id=1179433836761986024, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Fig.13, caption=Comparison of variation curves of Jand D, figureFileSmall=aWmClRg4sJ0z88Cs3MOzGA==, figureFileBig=GtdK19D4a3+btnqsecytRg==, tableContent=null), ArticleFig(id=1179433836883620841, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=图13, caption=不同控制的 J D的变化曲线对比, figureFileSmall=aWmClRg4sJ0z88Cs3MOzGA==, figureFileBig=GtdK19D4a3+btnqsecytRg==, tableContent=null), ArticleFig(id=1179433836950729706, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Fig.14, caption=Comparison of output curves of different controls during sudden change of load power, figureFileSmall=VJQYUdUd9NYZqROoMZ+xrQ==, figureFileBig=i5RsfT16fKyHbWQ/X+L01w==, tableContent=null), ArticleFig(id=1179433837030421483, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=图14, caption=负荷功率突变时不同控制的输出曲线对比, figureFileSmall=VJQYUdUd9NYZqROoMZ+xrQ==, figureFileBig=i5RsfT16fKyHbWQ/X+L01w==, tableContent=null), ArticleFig(id=1179433837097530348, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Table 1, caption=

Influence of parameters on performance indicators

, figureFileSmall=null, figureFileBig=null, tableContent=
参数 图5功率输出响应曲线 图6频率输出响应曲线
J D J D
σ
t s
), ArticleFig(id=1179433837206582253, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=表1, caption=

参数对性能指标的影响

, figureFileSmall=null, figureFileBig=null, tableContent=
参数 图5功率输出响应曲线 图6频率输出响应曲线
J D J D
σ
t s
), ArticleFig(id=1179433837273691118, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Table 2, caption=

Adjustment principles for J and D

, figureFileSmall=null, figureFileBig=null, tableContent=
区段 Δ ω d ω / d t J D
1 >0 ≫0 增大 微增
2 ≫0 >0 微增 增大
3 ≫0 <0 减小 增大
4 >0 ≪0 微减 微增
5 <0 ≪0 增大 微增
6 ≪0 <0 微增 增大
7 ≪0 >0 减小 增大
8 <0 ≫0 微减 微增
), ArticleFig(id=1179433837336605679, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=表2, caption=

J D的调整原则

, figureFileSmall=null, figureFileBig=null, tableContent=
区段 Δ ω d ω / d t J D
1 >0 ≫0 增大 微增
2 ≫0 >0 微增 增大
3 ≫0 <0 减小 增大
4 >0 ≪0 微减 微增
5 <0 ≪0 增大 微增
6 ≪0 <0 微增 增大
7 ≪0 >0 减小 增大
8 <0 ≫0 微减 微增
), ArticleFig(id=1179433837395325936, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Table 3, caption=

Fuzzy rules of JA

, figureFileSmall=null, figureFileBig=null, tableContent=
dω/dt Δω
FB FM FS O ZS ZM ZB
FB ZB ZB ZB ZS FB FB FB
FM ZB ZB ZM O FM FM FB
FS ZB ZM ZM O FM FM FM
O ZS ZS O O O ZS ZS
ZS FM FM FM O ZM ZM ZB
ZM FB FM FM O ZM ZB ZB
ZB FB FB FB ZS ZB ZB ZB
), ArticleFig(id=1179433837462434801, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=表3, caption=

JA的规则表

, figureFileSmall=null, figureFileBig=null, tableContent=
dω/dt Δω
FB FM FS O ZS ZM ZB
FB ZB ZB ZB ZS FB FB FB
FM ZB ZB ZM O FM FM FB
FS ZB ZM ZM O FM FM FM
O ZS ZS O O O ZS ZS
ZS FM FM FM O ZM ZM ZB
ZM FB FM FM O ZM ZB ZB
ZB FB FB FB ZS ZB ZB ZB
), ArticleFig(id=1179433837525349362, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Table 4, caption=

Fuzzy rules of DA

, figureFileSmall=null, figureFileBig=null, tableContent=
dω/dt Δω
FB FM FS O ZS ZM ZB
FB ZB ZM ZM ZS ZM ZM ZB
FM ZB ZM ZM O ZM ZM ZB
FS ZB ZM ZM O ZM ZM ZB
O ZB ZM ZM O ZM ZM ZB
ZS ZB ZM ZM O ZM ZM ZB
ZM ZB ZM ZM O ZM ZM ZB
ZB ZB ZM ZM ZS ZM ZM ZB
), ArticleFig(id=1179433837596652531, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=表4, caption=

DA的规则表

, figureFileSmall=null, figureFileBig=null, tableContent=
dω/dt Δω
FB FM FS O ZS ZM ZB
FB ZB ZM ZM ZS ZM ZM ZB
FM ZB ZM ZM O ZM ZM ZB
FS ZB ZM ZM O ZM ZM ZB
O ZB ZM ZM O ZM ZM ZB
ZS ZB ZM ZM O ZM ZM ZB
ZM ZB ZM ZM O ZM ZM ZB
ZB ZB ZM ZM ZS ZM ZM ZB
), ArticleFig(id=1179433837667955700, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Table 5, caption=

Simulation parameters of the VSG system

, figureFileSmall=null, figureFileBig=null, tableContent=
参数 数值
网侧电压 U g / V 380
额定角频率 ω 0 / ( r a d · s - 1 ) 314
直流电压 U d c / V 800
滤波电感 L f / m H 3.2
寄生电阻 R f / Ω 0.1
滤波电容 C f / μ F 20
), ArticleFig(id=1179433837739258869, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=表5, caption=

VSG系统的仿真参数

, figureFileSmall=null, figureFileBig=null, tableContent=
参数 数值
网侧电压 U g / V 380
额定角频率 ω 0 / ( r a d · s - 1 ) 314
直流电压 U d c / V 800
滤波电感 L f / m H 3.2
寄生电阻 R f / Ω 0.1
滤波电容 C f / μ F 20
), ArticleFig(id=1179433837810562038, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Table 6, caption=

Parameter after adjustment

, figureFileSmall=null, figureFileBig=null, tableContent=
参数 数值 参数 数值
J 0 / ( k g · m 2 ) 0.4 D 0 / ( N · m · s · r a d - 1 ) 25.72
量化因子 K e 3 量化因子 K e c 0.05
比例因子 K J 0.053 比例因子 K d 0.76
), ArticleFig(id=1179433837865087991, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=表6, caption=

整定后的参数

, figureFileSmall=null, figureFileBig=null, tableContent=
参数 数值 参数 数值
J 0 / ( k g · m 2 ) 0.4 D 0 / ( N · m · s · r a d - 1 ) 25.72
量化因子 K e 3 量化因子 K e c 0.05
比例因子 K J 0.053 比例因子 K d 0.76
), ArticleFig(id=1179433837932196856, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Table 7, caption=

Comparison of metrics for different controls when commanded power changes

, figureFileSmall=null, figureFileBig=null, tableContent=
时间段 控制方式 Δ P m a x / W Δ f m a x / H z t m / s
0.45 s附近 方式(1) 870 0.167 0.38
方式(2) 260 0.146 0.36
方式(3) 120 0.138 0.24
方式(4) 40 0.134 0.26
1.25 s附近 方式(1) 426 0.081 0.32
方式(2) 327 0.075 0.30
方式(3) 91 0.072 0.22
方式(4) 42 0.070 0.23
), ArticleFig(id=1179433837995111417, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=表7, caption=

指令功率变化时不同控制的指标对比

, figureFileSmall=null, figureFileBig=null, tableContent=
时间段 控制方式 Δ P m a x / W Δ f m a x / H z t m / s
0.45 s附近 方式(1) 870 0.167 0.38
方式(2) 260 0.146 0.36
方式(3) 120 0.138 0.24
方式(4) 40 0.134 0.26
1.25 s附近 方式(1) 426 0.081 0.32
方式(2) 327 0.075 0.30
方式(3) 91 0.072 0.22
方式(4) 42 0.070 0.23
), ArticleFig(id=1179433838070608890, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=EN, label=Table 8, caption=

Comparison of output curves of different controls during sudden change of load power

, figureFileSmall=null, figureFileBig=null, tableContent=
时间段 控制方式 Δ P m a x / W Δ f m a x / H z t m / s
0.65 s附近 方式(1) 622 0.110 0.30
方式(2) 204 0.098 0.28
方式(3) 176 0.094 0.23
方式(4) 52 0.091 0.25
1.25 s附近 方式(1) 542 0.092 0.30
方式(2) 190 0.083 0.27
方式(3) 184 0.080 0.22
方式(4) 76 0.078 0.24
), ArticleFig(id=1179433838129329147, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769464507450342, language=CN, label=表8, caption=

负荷功率突变时不同控制的指标对比

, figureFileSmall=null, figureFileBig=null, tableContent=
时间段 控制方式 Δ P m a x / W Δ f m a x / H z t m / s
0.65 s附近 方式(1) 622 0.110 0.30
方式(2) 204 0.098 0.28
方式(3) 176 0.094 0.23
方式(4) 52 0.091 0.25
1.25 s附近 方式(1) 542 0.092 0.30
方式(2) 190 0.083 0.27
方式(3) 184 0.080 0.22
方式(4) 76 0.078 0.24
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基于虚拟同步发电机参数优化的模糊自适应控制策略
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冯云龙 , 希望·阿不都瓦依提 *
科学技术与工程 | 论文·电工技术 2025,25(14): 5877-5885
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科学技术与工程 | 论文·电工技术 2025, 25(14): 5877-5885
基于虚拟同步发电机参数优化的模糊自适应控制策略
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冯云龙 , 希望·阿不都瓦依提*
作者信息
  • 新疆大学电气工程学院, 乌鲁木齐 830049
  • 冯云龙(1998—),男,汉族,河南郑州人,硕士研究生。研究方向:新能源发电与并网技术。E-mail:

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*希望·阿不都瓦依提(1967—),男,维吾尔族,新疆乌鲁木齐人,博士,副教授。研究方向:电力电子技术及多种可再生能源互补发电。E-mail:
Fuzzy Adaptive Control Strategy Based on Parameter Optimization of Virtual Synchronous Generator
Yun-long FENG , Abuduwayiti XIWANG*
Affiliations
  • School of Electrical Engineering, Xinjiang University, Urumqi 830049, China
出版时间: 2025-05-18 doi: 10.12404/j.issn.1671-1815.2404623
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针对基于虚拟同步发电机(virtual synchronous generator, VSG)控制的并网逆变器存在的抗扰能力差和动态响应时间长的问题,提出了一种VSG的改进模糊自适应控制策略。首先,建立VSG小信号模型,分析虚拟惯量与阻尼系数对系统动态响应的影响。确定两参数取值范围并利用麻雀搜索算法对自适应策略中惯量和阻尼的初始值寻优。其次,分析系统受扰动后的角频率变化曲线,细化设计模糊规则。最后,在MATLAB/Simulink中搭建单机VSG模型,将不同控制策略进行对比。结果表明:在指令功率和负载功率突变时,本文所提模糊自适应策略不仅提高了系统响应速度,且抗扰动能力强。证明了研究成果的有效性。
虚拟同步发电机  /  麻雀搜索算法  /  虚拟惯量  /  阻尼系数  /  模糊自适应控制

Aiming at the problems of poor disturbance immunity and long dynamic response time of the grid-connected inverter based on VSG(virtual synchronous generator) control, an improved fuzzy adaptive control strategy for VSG was proposed. First, a small-signal model of VSG was established to analyze the effects of virtual inertia and damping coefficient on the dynamic response of the system. Determine the value range of the two parameters and use the sparrow search algorithm to optimize the initial values of inertia and damping in the adaptive strategy. Next, the angular frequency change curve of the system after perturbation was analyzed to refine the design fuzzy rules. Finally, a stand-alone VSG model was built in MATLAB/Simulink to compare the different control strategies. The results show that the fuzzy adaptive strategy proposed in this paper not only improves the response speed of the system, but also has a strong anti-disturbance ability when the command power and load power change suddenly. The effectiveness of this paper's strategy is proved.

virtual synchronous generator  /  sparrow search algorithm  /  virtual inertia  /  damping factor  /  fuzzy adaptive control
冯云龙, 希望·阿不都瓦依提. 基于虚拟同步发电机参数优化的模糊自适应控制策略. 科学技术与工程, 2025 , 25 (14) : 5877 -5885 . DOI: 10.12404/j.issn.1671-1815.2404623
Yun-long FENG, Abuduwayiti XIWANG. Fuzzy Adaptive Control Strategy Based on Parameter Optimization of Virtual Synchronous Generator[J]. Science Technology and Engineering, 2025 , 25 (14) : 5877 -5885 . DOI: 10.12404/j.issn.1671-1815.2404623
“双碳”背景下,大量新能源通过电力电子变换器接入电网[1]。电力电子器件使电力系统整体的惯性和阻尼降低,影响系统的稳定性[2]。此背景下,虚拟同步发电机技术被提出,其通过控制过程使逆变器有同步发电机(synchronous generator, SG)的惯性和阻尼特性[3]。但在新能源出力波动时,逆变器输出频率与功率的响应曲线也会有超调和振荡现象。惯量与阻尼系数的不合理设置也会使振荡加剧[4]
文献[5]提出了运用棒棒算法对虚拟同步发电机(virtual synchronous generator, VSG)的虚拟惯量自适应调节,但该法使参数呈离散变化,同时惯量的突变会使系统稳定性变差。且未考虑阻尼系数对VSG系统的影响。文献[6]在VSG控制环节中加入阻尼协同惯量控制,有效抑制功率振荡维持频率稳定,但其将参数设为定值,导致参数无法适时调整。文献[7]借助角频率偏差和变化率曲线,分析阻尼和惯量的变化趋势,构造分段函数实现线性自适应控制,实现了调整值对角频率偏差的追踪,但线性控制有惯量与阻尼系数突变现象。文献[8]采用根轨迹法对比3种函数形式中控制参数的变化灵敏度,探讨参数变化对动态过程的影响,然而未给出参数选取范围。文献[9]给出惯量阻尼参数选取范围,并利用改进粒子群算法确定线性自适应控制中惯量阻尼的稳态值。文献[10-11]用神经网络算法处理连续非线性函数的优势,有效提升系统调节能力。但实际中运行计算量大且目标函数设计困难。
由于模糊控制无须考虑复杂的函数形式且计算量小。文献[12]结合惯量阻尼调整原则设计双参数的模糊规则,兼顾动态调节的快速性与稳定性。文献[13]考虑了储能约束下的惯量取值范围,但加大了分析难度。文献[14]将系统受扰动时的角频率变化过程细分,精细设计模糊规则,提升控制灵敏度。
当前各种控制策略均能改善VSG系统的动态性能,但仍有不足:分段线性控制中的关键参数设置繁琐,且阻尼系数突变使得VSG控制效果变差。模糊控制可使阻尼系数变化更缓和,但模糊自适应控制的精度不仅与模糊规则有关,还与自适应策略的初值相关。现选用麻雀搜索算法(sparrow search algorithm,SSA)优化VSG系统惯量和阻尼系数的稳态值。通过分析扰动时角频率变化过程,细化模糊控制规则,进一步提升VSG模糊自适应控制的精度。最终,该策略可减小VSG输出功率超调量和频率偏差量,加快调节时间。通过对比几种不同VSG控制策略,验证本文控制策略的有效性。
常规VSG控制拓扑如图1所示。新能源发电装置与储能系统并联后,通过三相逆变器的直流交流变换、LC滤波器的滤波,可将输出功率传至负荷或将增发功率送至交流电网。
图1可知,逆变器输出功率实时计算并送入VSG控制环节,VSG控制可实时生成虚拟相角与输出电压幅值,相角与电压幅值可合成三相电势,再结合 d q轴变换与电压电流控制器,生成逆变器输出电势参考值,电势参考值经过正弦脉宽调制(sinusoidal pulse width modulation,SPWM)控制三相逆变器的开关管,使逆变器输出参考电势值。
VSG控制的核心部分是有功频率控制和无功电压控制。这两部分分别可实现VSG系统的调频调压功能。其中,有功频率控制中的惯量和阻尼系数的是影响VSG系统输出功率和频率暂态性能的关键参数。采用SG的经典二阶模型对VSG建模。
VSG的有功频率控制中包括虚拟调速器和转子运动特性环节,其转子运动方程表示为
J d ( ω - ω 0 ) d t = P m - P e ω 0 - D ( ω - ω 0 ) d θ d t = ω
式(1)中: J为虚拟惯量,kg/m2; ω ω 0分别为输出角频率和额定角频率,rad/s; P m P e为机械功率和电磁功率,W; D为阻尼系数,(N·m·s)/rad; θ为输出虚拟相角,rad。
虚拟调速器有一次调频功能,表达式为
P m = P r e f + Δ P = P r e f - K w ( ω 0 - ω )
式(2)中: P r e f为有功功率指令值; K w为调差系数。
VSG的无功电压控制的表达式为
E m = E 0 + K q ( Q r e f - Q e ) + K u ( U r e f - U o )
式(3)中: E 0 E m分别为空载电压、输出相电压幅值,V; K q K u分别为无功下垂系数、电压调节系数; Q r e f Q e分别为输出无功功率参考值、实际值,kVar; U r e f U o分别为输出电压参考值、实际值,V。
无功环节的虚拟电势 E m与有功环的虚拟相位角 θ结合,可以得到输出虚拟电势向量 E a b c
E a b c = E m s i n θ E m s i n ( θ - 2 π / 3 ) E m s i n ( θ + 2 π / 3 )
VSG控制图如图2所示。
虚拟电势向量 E a b c经过 d q轴变换生成轴分量 E d E q;将其送入电压控制器与电流控制器[15]。最终生成逆变器输出电势参考值的 d q轴分量,分别为 e d * e q *;电压外环控制与电流内环控制环节的相对应的公式分别为
i L d * = K p v + K i v s ( E d - u o d ) - ω 0 C f u o q + i o d i L q * = K p v + K i v s ( E q - u o q ) - ω 0 C f u o q + i o q
e d * = K p i + K i i s ( i L d * - i L d ) - ω 0 L f i L q + u o d e q * = K p i + K i i s ( i L q * - i L q ) + ω 0 L f i L d + u o q
式中: i L d * i L q *为逆变器输出电流参考值的 d q轴分量; K p v K i v K p i K i i分别为电压与电流控制中PI控制参数; u o d u o q为机端输出电压的 d q轴分量; i o d i o q为机端输出电流的 d q轴分量; i L d i L q为逆变器输出电流的 d q轴分量。
将运行中的VSG系统理想化,得并网等效电路,如图3所示。设 δ为VSG的功角, E为输出相电压有效值; U为网侧相电压有效值; δ = θ - ω 0 t
忽略VSG输出电压与参考电压的静态误差,类比SG的电磁原理,得VSG输出功率为
P e = 3 E U X f s i n δ 3 E U X f δ = K p δ
式(7)中:定义 K p = 3 E U X f;纯感性线路并网时,即 ω 0 L f R f; δ 0 °; E U
由式(1)和式(7)推出有功控制环节小信号模型,如图4所示。
同时可得指令功率 P r e f分别与输出功率 P e、输出角频率 ω之间的传递函数为
G p ( s ) = P e ( s ) P r e f ( s ) = K p J ω 0 s 2 + ( D ω 0 + K w ) s + K p
G ω ( s ) = ω ( s ) P r e f ( s ) = s J ω 0 s 2 + ( D ω 0 + K w ) s + K p
式(8)对应的二阶系统的自然振荡角频率 ω n和阻尼比 ξ如式(10)所示。由文献[16]知, K w一般取定值, K w = 25。则系统动态特性受 J D取值影响。
ω n = K p J ω 0 ξ = D 2 + K w 2 ω 0 ω 0 J K p
P r e f = 10 k W,由式(8)得出 J D变化时的功率阶跃响应曲线,如图5所示。
由式(9)得出 J D变化时的输出频率差值 Δ f响应曲线,如图6所示。
分析可知,参数变化与系统响应曲线的调节时间 t s和超调量 σ的关系,如表1所示。从表1可看出:当 D固定, J变大时,输出功率曲线的超调可被减小,但输出频率曲线的偏差就会变大。
同时,为分析 J D变化对系统稳定性的影响,将式(8)对应的二阶闭环系统进行根轨迹分析。
图7知,随着 J增加,极点集体靠近虚轴,系统稳定性变差;当 J固定, D在[0,50]内增加时,极点沿虚线向实轴左半轴移动,系统为欠阻尼状态。 D增大到一定值,系统的一对共轭复根会合于实轴,此时系统处于临界状态。阻尼 D继续增大时,极点在实轴上反向运动,系统处于过阻尼状态。
J D过小,系统动态性能变差, J过大,系统稳定性变差。 D过大,使系统为过阻尼状态时,系统响应过程将变慢。故参数的取值要合理设置。
据分布式电源并网技术标准[16],逆变器仅能正常运行于 Δ f ± 5 %内,故逆变器调频所需有功功率应是额定容量的40%~100%,故有
0.4 Δ P m a x ω 0 Δ ω m a x D + K w ω 0 Δ P m a x ω 0 Δ ω m a x
式(11)中: Δ ω m a x = π; Δ P m a x为最大输出功率差值; Δ ω m a x最大角频率差值。
取额定容量30 kV·A,则 D的范围[12.08,30.33]。考虑超调量和调节时间[4],设置阻尼比区间为[0.707,1],则 J的取值公式为
( D + K w / ω 0 ) 2 ω 0 2 2 K p J ( D + K w / ω 0 ) 2 ω 0 1 . 4 2 K p
可得 J的范围是[0.08,1.02]。传统VSG的 J D的稳态值是在参数范围内按经验取值,本文则折中设置取值区间,由算法寻优取值。
适应度函数可对种群个体的适应性进行衡量。误差绝对值时间积分(integrated time absolute error,ITAE)可用于全面描述系统动态性能。ITAE的表达式为
F I T A E = 0 t t Δ f d t
式(13)中: Δ f P r e f突变后的频率差值。
麻雀搜索算法是仿麻雀觅食和反捕食行为的一种优化算法。待优化参数个数即维度 d, n只麻雀组成种群,并分为探索者、加入者、警戒者[15]
探索者向其他个体提供觅食方向和区域。更优适应度的个体先发现食物。迭代中,位置更新为
X i , j t + 1 = X i , j t exp i α T , R 2 < S X i , j t + Q L , R 2 S
式(14)中: t为目前迭代值; T为最大迭代值; X I , j t X I , j t + 1分别为第 t次与 t + 1次迭代时第 i只鸟第 j维的位置; α为(0,1]内随机值; Q为服从正态分布的随机值; L为元素都是1的 1 × d阶矩阵; R 2 S为预警值和安全值;当 R 2 S,当前位置个体向种群发出警报并逃离该地。
加入者跟随发现者并抢食,其位置更新式为
X i , j t + 1 = Q exp X w t X i , j t i 2 , i > n 2 X p t + 1 + X i , j t X p t + 1 A + L ,
式(15)中: X p t + 1为发现者最优位置; X w t为第 t次迭代的最差位置; A 1 × d的矩阵,矩阵元素随机赋值为-1或1,且 A + = A T ( A A T ) - 1; i > n / 2时,适应度差的第 i加入者未获得食物,飞向它地觅食。
当发现危险时,警戒者会及时向其他个体发出警报,让种群远离当前捕食区域,公式为
X i , j t + = X best t + β X i , j t X best t , f i > f g X i , j t + K X i , j t X w t f i f w + ε , f i = f g
式(16)中: X b e s t为全局最优位置; β为步长参数; K为[-1,1]范围的随机值,表示麻雀移动方向; f i为当前适应度值; f g f w为当前全局最佳和最差的适应度值; ε为趋于零的数,防止分母变零。
f i > f g时,麻雀在种群边缘,易受天敌攻击; f i = f g时,种群中间的麻雀发现危险,飞向其他麻雀减少风险。
寻优过程如下:①设定范围,初始化 n d以及捕食者、加入者的行列;②计算适应度值并排序;③更新捕食者、加入者、警觉者的位置;④计算适应度值并更新麻雀位置;⑤满足停止条件,则退出;否则转至步骤②。
由式(1)可得式(17),即
Δ ω = P m P e J ω 0 d ω / d t D d ω d t = P m P e D Δ ω J ω 0
Δ ω分别与 D反比, d ω / d t J为反比;调整 J D可抑制扰动时 Δ ω d ω / d t的变化。固定惯量和阻尼时,频率振荡曲线如图8所示。本文研究将此过程分8个区间分析。
区间[1,2]内,角频率的偏差 Δ ω和偏导 d ω d t都大于0,但区间1内 d ω d t变化更快,应增大 J微增 D来抑制频率突变;在区间2内 Δ ω更大,应微增 J、增大 D来抑制偏差继续变大。
区间[3,4]内, Δ ω > 0,,但区间3内 d ω d t相对更大,增大 D减小 J加快频率恢复;区间4内让 J微减,微增 D,加快频率恢复和减小功率超调,同时减弱区间5内初始的 d ω d t。区间[5,8]的取值类似区间[1,4]。由此得出 J D取值规则,如表2所示。
VSG参数模糊自适应控制结构如图9所示。模糊控制器主要由模糊化、模糊推理和解模糊3部分组成。以 Δ ω d ω / d t的信号作为输入,经隶属度函数模糊化,然后通过模糊规则和解模糊得到惯量和阻尼变化值 J A D A
经1.5节整定后得 J 0 D 0的取值;变化值与初值结合后,得到功率频率控制环节的惯量和阻尼的自适应取值为: J = J 0 + J A, D = D 0 + D A
将输入输出的论域统一为[-6,6]。 K e K e c为输入量化因子,可将输入的实际变化范围量化至[-6,6]内。最大功率波动时, Δ ω d ω / d t取得最大的实际变化范围。
输出输入的模糊子集均为{负大(FB)、负中(FM)、负小(FS)、零(O)、正小(ZS)、正中(ZM)、正大(ZB)};经过修正后,隶属度函数采用中间trimf型,两端gaussmf型,如图10所示。参考表2修改 J A D A的模糊规则,具体规则如表3表4所示。
模糊推理用mamani型算法;解模糊则采用重心法。推理输出的结果经过比例因子 K J K D相乘,得到最终的调整值 J A D A。为防止 J 0 + J A 0.08 , K J = J 0 - 0.08 6, K D = ( 30.33 - D 0 ) / 6
在MATLAB/Simulink中搭建VSG系统并入无穷大电网模型。先用SSA算法对惯量阻尼的稳态值寻优,并整定模糊策略参数,最后在不同情景下验证本文控制策略的有效性。系统参数如表5所示。
设定算法种群规模为30,迭代100次。据1.4节和1.5节设置合理范围与适应度函数。适应度曲线对比如图11所示,第18次迭代时,SSA算法就可得最优适应度值。对比可知:SSA算法寻优速度更快。
确定 J D自适应策略的初值后,对模糊控制参数进行整定,结果如表6所示。
分别在指令有功功率和负载功率突变情景下,对以下4种控制方式进行仿真,并对比效果。
(1)定参数(经验值): J = 0.47 D = 22
(2)定参数(优化值): J = 0.4 D = 25.72
(3)线性策略[17](优化后): J 0 = 0.4 D 0 = 25.72;调节系数 k J = 0.001 k D = 4
(4)本文模糊策略(优化后),参数同表6
情景1(指令功率突变):VSG系统初始有功负荷15 kW;0.4、1.2 s时,指令功率分别上升10 kW,下降5 kW。输出响应曲线对比如图11所示。
用3种指标对响应结果评价。如表7所示,与参考功率的最大功率偏差为 Δ P m a x;与额定频率的最大频率偏差为 Δ f m a x;扰动后到达稳态的时间为 t m
对0.45 s附近的扰动后的响应曲线分析。相比于经验取值的定参数方式(1),经 J D寻优后的方式(2)可以使功率超调降低70%,使频率偏差降低13%,表明参数寻优的必要性。与参数优化后的定参数方式(2)和线性方式(3)相比,本文模糊方式(4)可将功率超调分别减少83%和66%,将频率偏差分别减少8%和3%;调节时间方面,与定参数方式(2)相比,方式(3)与方式(4)可使调节时间减小33%和27%;线性方式(3)能使输出响应曲线更快到稳态值附近,主要原因可分析惯量阻尼系数变化过程得出。
线性自适应与模糊自适应的 J D变化曲线如图13示。在0.45 s或1.25 s左右,线性自适应中阻尼系数的突降会使响应恢复更快,但振荡抑制能力会变弱,故图12中线性方式(3)的响应曲线较快到稳态值,在稳态值附近有较小范围的振荡。模糊控制的惯量变化灵活,阻尼变化更缓和,输出响应曲线更平滑。同时,精细模糊规则可使参数调节灵敏。
情景2(负载功率波动):初始阶段有20 kW的有功负荷,0.6 s失去8 kW负荷,1.4 s投入7 kW负荷。输出功率和频率响应曲线如图14所示。
图14可知,0.62 s时,4种控制方式下的功率差值基本一致。0.72 s左右,功率响应曲线处于恢复阶段,不同控制下最大功率差值与振荡现象不同。与定参数方式(2)与线性自适应方式(3)相比,本文模糊控制方式(4)可使功率超调分别减小74%和70%。
对0.65 s附近扰动的响应曲线分析。0.64 s时频率差值达到最大,相比于定参数方式(2)与线性自适应方式(3),本文模糊控制方式(4)可使频率差值分别减小7%和3%。
在采用本文的惯量阻尼模糊自适应控制策略后,VSG系统的输出功率和输出频率超调都将减小,调节时间更短,响应曲线变化更平滑。此时VSG系统具有更好的暂态性能。
分析了VSG控制中虚拟惯量J和阻尼系数D对系统动态响应的影响,并用麻雀搜索算法对两个参数的稳态值寻优,最终提出一种基于VSG参数优化的模糊自适应控制策略,得到以下结论。
(1)针对传统VSG控制中对虚拟惯量和阻尼系数的稳态值取值粗略的问题,本文研究在合理参数范围内,由SSA算法对稳态值寻优取值。与传统取值相比,优化后的参数可使输出有功功率的超调和输出频率偏差均减小,同时可缩短调节时间。证明了参数寻优取值的优越性。
(2)针对VSG系统在功率扰动时抗干扰性能差和动态响应时间长的问题,本文提出一种改进的惯量阻尼模糊自适应控制策略,不仅细化了模糊规则,还对自适应控制中的初始值寻优取值。与参数寻优后定惯量和定阻尼的VSG控制相比,本文所提策略使频率偏差平均减小了7.5%。有功功率超调量平均减小了78%,调节时间平均缩短了18%。证明了本文模糊自适应控制增强了VSG系统的抗干扰性能,减小了系统的动态响应时间。
(3)与VSG系统中的常规线性自适应控制相比,采用模糊自适应控制策略后的转动惯量变化更加灵活,阻尼系数的突变现象有所改善,进而使得输出响应曲线更平滑,使系统的动态响应得到改善。
  • 新疆维吾尔自治区自然科学基金(2022D01C664)
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doi: 10.12404/j.issn.1671-1815.2404623
  • 接收时间:2024-06-29
  • 首发时间:2025-07-09
  • 出版时间:2025-05-18
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  • 收稿日期:2024-06-29
  • 修回日期:2025-02-25
基金
新疆维吾尔自治区自然科学基金(2022D01C664)
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    新疆大学电气工程学院, 乌鲁木齐 830049

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*希望·阿不都瓦依提(1967—),男,维吾尔族,新疆乌鲁木齐人,博士,副教授。研究方向:电力电子技术及多种可再生能源互补发电。E-mail:
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