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基于CNN-LSTM的支撐電容容值軟測(cè)量
2021年電子技術(shù)應(yīng)用第9期
楊培盛1,付 宇1,,李鴻飛2,,初開(kāi)麒2,,王夢(mèng)謙2,李政達(dá)2
1.濟(jì)南軌道交通集團(tuán)建設(shè)投資有限公司,,山東 濟(jì)南250014,; 2.中車青島四方車輛研究所有限公司,山東 青島266033
摘要: 實(shí)時(shí)監(jiān)測(cè)功率變流器中支撐電容的老化狀態(tài),,及時(shí)發(fā)現(xiàn)并更換存在缺陷的電容,對(duì)提高功率變換器的可靠性具有重要意義,?;谙嚓P(guān)電壓電流數(shù)據(jù),通過(guò)建立數(shù)據(jù)集,,確定網(wǎng)絡(luò)模型參數(shù)和模型訓(xùn)練,,最終得到基于CNN-LSTM的神經(jīng)網(wǎng)絡(luò)模型,并通過(guò)不同工況下的數(shù)據(jù)集對(duì)神經(jīng)網(wǎng)絡(luò)模型的準(zhǔn)確性進(jìn)行了驗(yàn)證,。結(jié)果表明,,該模型可對(duì)電容容值進(jìn)行可靠預(yù)測(cè)。
中圖分類號(hào): TN102,;TM531
文獻(xiàn)標(biāo)識(shí)碼: A
DOI:10.16157/j.issn.0258-7998.201128
中文引用格式: 楊培盛,,付宇,李鴻飛,,等. 基于CNN-LSTM的支撐電容容值軟測(cè)量[J].電子技術(shù)應(yīng)用,,2021,47(9):16-19.
英文引用格式: Yang Peisheng,,F(xiàn)u Yu,,Li Hongfei,et al. Soft measurement of supporting capacitance based on CNN-LSTM[J]. Application of Electronic Technique,,2021,,47(9):16-19.
Soft measurement of supporting capacitance based on CNN-LSTM
Yang Peisheng1,F(xiàn)u Yu1,,Li Hongfei2,,Chu Kaiqi2,Wang Mengqian2,,Li Zhengda2
1.Jinan Rail Transit Group Construction Investment Co.,,Ltd.,,Jinan 250014,China,; 2.CRRC Qingdao Sifang Rolling Stock Research Institute Co.,,Ltd.,Qingdao 266033,,China
Abstract: It is of great significance to monitor the aging state of the supporting capacitors in the power converter in real time and to find and replace the defective capacitors in time. In this paper, based on the relevant voltage and current data, through the establishment of data sets, the network model parameters and model training are determined. Finally, the neural network model based on CNN-LSTM is obtained. The accuracy of the neural network model is verified by the data sets under different working conditions. The results show that the model can reliably predict the capacitance value.
Key words : support capacitor,;CNN-LSTM;reliability,;neural network

0 引言

    近年來(lái),,電力電子系統(tǒng)的可靠性越來(lái)越引起社會(huì)各界的廣泛注意[1-2]。大量的研究及實(shí)踐表明,,在軌道交通領(lǐng)域,,實(shí)現(xiàn)軌道列車牽引系統(tǒng)的實(shí)時(shí)健康狀態(tài)監(jiān)測(cè),做到及時(shí)的故障預(yù)警和提前維修[3-4],,將大大提高系統(tǒng)的可靠性,,節(jié)約維修成本。

    直流母線支撐電容作為牽引系統(tǒng)的關(guān)鍵部件,,其健康狀態(tài)隨著投入運(yùn)行年限的增加而變差,,直流母線電容失效導(dǎo)致的列車系統(tǒng)停機(jī)甚至損毀給社會(huì)帶來(lái)了巨大的經(jīng)濟(jì)損失[5-6]。因此,,支撐電容的狀態(tài)監(jiān)測(cè)技術(shù)成為了當(dāng)前研究的熱點(diǎn)[7-8],。支撐電容的容值能夠表征其真實(shí)的健康狀態(tài)[9],本文提出了一種大功率變流器直流母線電容容值的在線監(jiān)測(cè)方法,,利用數(shù)據(jù)訓(xùn)練得到基于卷積神經(jīng)網(wǎng)絡(luò)-長(zhǎng)短期記憶網(wǎng)絡(luò)(Convolutional Neural Networks-Long Short Term Memory,,CNN-LSTM)的神經(jīng)網(wǎng)絡(luò)模型[10],可以根據(jù)列車系統(tǒng)運(yùn)行過(guò)程中采集到的實(shí)時(shí)運(yùn)行數(shù)據(jù)進(jìn)行支撐電容值的準(zhǔn)確軟測(cè)量,,對(duì)于實(shí)現(xiàn)支撐電容健康狀態(tài)在線監(jiān)測(cè),、提高功率變流器的可靠性具有重要意義。




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作者信息:

楊培盛1,,付  宇1,李鴻飛2,,初開(kāi)麒2,,王夢(mèng)謙2,李政達(dá)2

(1.濟(jì)南軌道交通集團(tuán)建設(shè)投資有限公司,,山東 濟(jì)南250014,;

2.中車青島四方車輛研究所有限公司,山東 青島266033)




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