Article(id=1149789683179282992, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149768563956826506, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2406998, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1726675200000, receivedDateStr=2024-09-19, revisedDate=1742400000000, revisedDateStr=2025-03-20, acceptedDate=null, acceptedDateStr=null, onlineDate=1752060822529, onlineDateStr=2025-07-09, pubDate=1749312000000, pubDateStr=2025-06-08, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752060822529, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752060822529, creator=13701087609, updateTime=1752060822529, updator=13701087609, issue=Issue{id=1149768563956826506, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='16', pageStart='6587', pageEnd='7021', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752055787314, creator=13701087609, updateTime=1768456850262, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1218559607937618069, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149768563956826506, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1218559607937618070, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149768563956826506, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=6781, endPage=6788, ext={EN=ArticleExt(id=1149789683447718449, articleId=1149789683179282992, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Improved Lightweight Neural Network for Photovoltaic Maximum Power Point Tracking Based on Knowledge Distillation, columnId=1156262733675876713, journalTitle=Science Technology and Engineering, columnName=Papers·Electrical Technology, runingTitle=null, highlight=null, articleAbstract=
To address limitations in the engineering application of neural network based maximum power point tracking(MPPT) algorithms, an improved lightweight neural network MPPT algorithm was proposed. The complexity and memory usage of the neural network were reduced through a knowledge distillation compression algorithm, and a lightweight model was obtained. The inherent theoretical error of model predictions was corrected using an optimized variable step-size perturb and observe method. In the initial stage, the neural network predicted the voltage range of the maximum power point. In the later stage, disturbance observation progressively refined this range until it converged at the maximum power point. A simulation model was developed in MATLAB/Simulink, and a physical model was constructed for comparative experiments. Results indicate that the proposed algorithm achieves higher tracking efficiency, improved ripple voltage suppression, and lower resource consumption rate in embedded devices.
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针对神经网络最大功率追踪(maximum power point tracking,MPPT)算法由于缺乏实用性改进而难以应用于工程实践的问题,提出一种改进轻量级神经网络MPPT算法。其通过知识蒸馏算法减小神经网络复杂度及内存占用率,得到轻量级神经网络模型,并结合优化变步长扰动观察法来修正模型精度问题所带来的预测误差;算法前期通过轻量级模型预测最大功率点电压范围并快速追踪进入范围,后期通过优化扰动观察法不断更新范围上下限,最终使上下限收敛至最大功率点。之后在MATALB/Simulink中建立仿真模型,最后搭建实物模型并进行对比实验。结果表明:所提算法追踪效率更高,纹波电压抑制更稳定,并且在嵌入式设备中资源占用率更小。
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张智娟(1971—),女,汉族,河北博野人,博士,副教授。研究方向:能量采集、无线能量传输。E-mail:zhzhj@ncepu.edu.cn。
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张智娟(1971—),女,汉族,河北博野人,博士,副教授。研究方向:能量采集、无线能量传输。E-mail:zhzhj@ncepu.edu.cn。
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40(10): 182-187., articleTitle=Design of self-power supply system based on WSN node of intelligent irrigation system, refAbstract=null)], funds=[Fund(id=1178036534595957642, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, awardId=F2016502104, language=CN, fundingSource=河北省自然科学基金(F2016502104), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1178036530988856148, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, xref=null, ext=[AuthorCompanyExt(id=1178036530997244757, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, companyId=1178036530988856148, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071000, China), AuthorCompanyExt(id=1178036531005633366, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, companyId=1178036530988856148, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=华北电力大学电气与电子工程学院, 保定 071000)])], figs=[ArticleFig(id=1178036532633023342, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Fig.1, caption=
Output characteristic curves under different irradiance levels, figureFileSmall=I8JzT3RFrQjWbeioLcpo4g==, figureFileBig=Uo7vs7bpOlvSB8BpbrWRzg==, tableContent=null), ArticleFig(id=1178036532721103727, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=图1, caption=
不同辐照度下输出特性曲线, figureFileSmall=I8JzT3RFrQjWbeioLcpo4g==, figureFileBig=Uo7vs7bpOlvSB8BpbrWRzg==, tableContent=null), ArticleFig(id=1178036532784018288, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Fig.2, caption=
Output characteristic curves at different temperatures, figureFileSmall=4tWYfHOcd4aD+AeVKIY9Kg==, figureFileBig=eFo4oE//6OB7WA1rAWfocw==, tableContent=null), ArticleFig(id=1178036532834349937, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=图2, caption=
不同温度下的输出特性曲线, figureFileSmall=4tWYfHOcd4aD+AeVKIY9Kg==, figureFileBig=eFo4oE//6OB7WA1rAWfocw==, tableContent=null), ArticleFig(id=1178036532909847410, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Fig.3, caption=
Comparison of the sample value with the predicted value of the neural network model, figureFileSmall=DMC4r8Icsixu2UeL/OivkQ==, figureFileBig=1neKntCM3oTBLkpOTPNIqQ==, tableContent=null), ArticleFig(id=1178036532993733491, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=图3, caption=
样本值与模型预测值对比曲面图, figureFileSmall=DMC4r8Icsixu2UeL/OivkQ==, figureFileBig=1neKntCM3oTBLkpOTPNIqQ==, tableContent=null), ArticleFig(id=1178036533069230964, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Fig.4, caption=
Algorithm update flow chart, figureFileSmall=JGsjsWoDLsxnXkG5f3pnFA==, figureFileBig=MpM7Mc4UaNDln7ZixoPRww==, tableContent=null), ArticleFig(id=1178036533123756917, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=图4, caption=
算法更新流程图 dP和dV为扰动后的功率变化量和电压变化量;Dnew为本次扰动的占空比;Dmin和Dmax为占空比的下边界和上边界
, figureFileSmall=JGsjsWoDLsxnXkG5f3pnFA==, figureFileBig=MpM7Mc4UaNDln7ZixoPRww==, tableContent=null), ArticleFig(id=1178036533211837302, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Fig.5, caption=
Knowledge distillation algorithm framework, figureFileSmall=7+mhWr8092vbExA5E6E5Tg==, figureFileBig=cre73BR2ogJn7tbY5Q5Z5Q==, tableContent=null), ArticleFig(id=1178036533278946167, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=图5, caption=
知识蒸馏算法框架图 Wij1为教师模型输入层与隐藏层的节点权重;Wik1为教师模型隐藏层与输出层的节点权重;Wij2为学生模型输入层与隐藏层的节点权重;Wjk2为学生模型隐藏层与输出层的节点权重
, figureFileSmall=7+mhWr8092vbExA5E6E5Tg==, figureFileBig=cre73BR2ogJn7tbY5Q5Z5Q==, tableContent=null), ArticleFig(id=1178036533333472120, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Fig.6, caption=
Improved neural network algorithm schematic, figureFileSmall=syImdQVJvWnwUIQdR7Iofg==, figureFileBig=43lNFu3Lm3uuP6dRo06D/A==, tableContent=null), ArticleFig(id=1178036533396386681, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=图6, caption=
改进神经网络算法解释图, figureFileSmall=syImdQVJvWnwUIQdR7Iofg==, figureFileBig=43lNFu3Lm3uuP6dRo06D/A==, tableContent=null), ArticleFig(id=1178036533459301242, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Fig.7, caption=
Flowchart of the improved neural network algorithm, figureFileSmall=XtKgINqh1wuniR3xaauxsw==, figureFileBig=gd+VLGlKBdqcPW/XKidi9Q==, tableContent=null), ArticleFig(id=1178036533526410107, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=图7, caption=
改进神经网络算法流程图, figureFileSmall=XtKgINqh1wuniR3xaauxsw==, figureFileBig=gd+VLGlKBdqcPW/XKidi9Q==, tableContent=null), ArticleFig(id=1178036533589324668, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Fig.8, caption=
Improved neural network algorithm simulation model, figureFileSmall=CMwy4yY9TTvuleLIY7aTjQ==, figureFileBig=Fy7yxD4glhNENInWQdLd2w==, tableContent=null), ArticleFig(id=1178036533648044925, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=图8, caption=
改进神经网络算法仿真模型 G为辐照度;T为温度;V为光伏板输出电压;I为光伏板输出电流;V_predict为神经网络预测电压;D3为PWM信号占空比;Continuous为连续系统仿真模式;NNET为神经网络模型;Input为模型输入;Output为模型输出;m为光伏板信号参数接口;V_PV和I_PV分别为光伏板输出电压和电流的离散采样信号;g为MOS管的栅极;S为MOS管的源极;L为电感;RL为负载阻抗
, figureFileSmall=CMwy4yY9TTvuleLIY7aTjQ==, figureFileBig=Fy7yxD4glhNENInWQdLd2w==, tableContent=null), ArticleFig(id=1178036533727736702, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Fig.9, caption=
Simulation results of different algorithms, figureFileSmall=fBJEqrZM0tWZt13UuszIug==, figureFileBig=kYGj4UD9IQjjmdm50qGOtQ==, tableContent=null), ArticleFig(id=1178036533790651263, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=图9, caption=
不同算法仿真对比结果, figureFileSmall=fBJEqrZM0tWZt13UuszIug==, figureFileBig=kYGj4UD9IQjjmdm50qGOtQ==, tableContent=null), ArticleFig(id=1178036533853565824, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Fig.10, caption=
Diagram of experimental device, figureFileSmall=fH80JjOQHqz/E/QaME3FGg==, figureFileBig=1f/OxlliJTV4IWK4xuk5Bw==, tableContent=null), ArticleFig(id=1178036533908091777, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=图10, caption=
实验装置, figureFileSmall=fH80JjOQHqz/E/QaME3FGg==, figureFileBig=1f/OxlliJTV4IWK4xuk5Bw==, tableContent=null), ArticleFig(id=1178036533979394946, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Fig.11, caption=
Comparison of teacher model and student model analysis, figureFileSmall=oeU4F3UvHK0UVtRyPiEfzQ==, figureFileBig=OF7GVSSrV/u2Oyr3TBzp7Q==, tableContent=null), ArticleFig(id=1178036534042309507, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=图11, caption=
教师模型与学生模型分析对比 Complexity为计算复杂度;Used Flash为闪存占用;Used Ram为内存占用
, figureFileSmall=oeU4F3UvHK0UVtRyPiEfzQ==, figureFileBig=OF7GVSSrV/u2Oyr3TBzp7Q==, tableContent=null), ArticleFig(id=1178036534105224068, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Fig.12, caption=
Comparison between UMPP tracking values and actual values of different algorithms, figureFileSmall=tLEpVP75ghQgZSS9AxJOcw==, figureFileBig=/p0IIPqC23nONIh0bWpzug==, tableContent=null), ArticleFig(id=1178036534163944325, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=图12, caption=
不同算法UMPP追踪值与实际值对比, figureFileSmall=tLEpVP75ghQgZSS9AxJOcw==, figureFileBig=/p0IIPqC23nONIh0bWpzug==, tableContent=null), ArticleFig(id=1178036534222664582, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Table 1, caption=
PV module parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
| 开路电压Uoc / V | 7.2 |
| 短路电流Isc / A | 0.45 |
| 最大功率点电压UMPP / V | 6 |
| 最大功率点电流Impp / A | 0.4 |
| 最大功率Pmpp / W | 2.4 |
), ArticleFig(id=1178036534302356359, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=表1, caption=
光伏组件参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
| 开路电压Uoc / V | 7.2 |
| 短路电流Isc / A | 0.45 |
| 最大功率点电压UMPP / V | 6 |
| 最大功率点电流Impp / A | 0.4 |
| 最大功率Pmpp / W | 2.4 |
), ArticleFig(id=1178036534377853832, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=EN, label=Table 2, caption=
Comparison of tracking effect of three MPPT algorithms
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辐照度/ (W·m-2) | 算法名称 | 追踪到的 功率/W | 追踪精 度/% | 追踪时 间/s |
| 变步长扰动观察法 | 0.78 | 89 | 7.89 |
| 412 | 传统神经网络法 | 0.79 | 90 | 4.43 |
| 改进神经网络法 | 0.82 | 93 | 4.43 |
| 变步长扰动观察法 | 1.26 | 91 | 8.86 |
| 624 | 传统神经网络法 | 1.26 | 91 | 5.33 |
| 改进神经网络法 | 1.31 | 94 | 6.14 |
| 变步长扰动观察法 | 1.90 | 89 | 6.56 |
| 902 | 传统神经网络法 | 1.95 | 92 | 4.50 |
| 改进神经网络法 | 2.02 | 95 | 4.44 |
), ArticleFig(id=1178036534453351305, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149789683179282992, language=CN, label=表2, caption=
3种算法追踪效果对比
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辐照度/ (W·m-2) | 算法名称 | 追踪到的 功率/W | 追踪精 度/% | 追踪时 间/s |
| 变步长扰动观察法 | 0.78 | 89 | 7.89 |
| 412 | 传统神经网络法 | 0.79 | 90 | 4.43 |
| 改进神经网络法 | 0.82 | 93 | 4.43 |
| 变步长扰动观察法 | 1.26 | 91 | 8.86 |
| 624 | 传统神经网络法 | 1.26 | 91 | 5.33 |
| 改进神经网络法 | 1.31 | 94 | 6.14 |
| 变步长扰动观察法 | 1.90 | 89 | 6.56 |
| 902 | 传统神经网络法 | 1.95 | 92 | 4.50 |
| 改进神经网络法 | 2.02 | 95 | 4.44 |
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