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PEI Zhiqiang
Abstract:Aiming at the traditional mine hoist rocker arm bearing fault diagnosis technology which usuallyonly utilizes a certain specific geometric structure of the vibration dataset and fails to obtain the optimal similaritygraph structure,an intelligent diagnosis method for bearing faults based on adaptive graph e...
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Number of views:3151 Amount of downloads:17410
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WANG Kun,LIU Xiaonan,DU Yingkang,ZHANG Bohan,TIAN Xinyi,ZHANG Zhaonan
Abstract:Decentralized multiple energy systems(DMES)are vital for energy transition and local efficientutilization. The standards for DMES cover various fields,including distributed energy,microgrids,energy storagetechnologies,and communication control,making the standardization work more systematic and complex.Curr...
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Number of views:3201 Amount of downloads:16644
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ZHANG Jie,CHEN Qiang,LUO Yuanfeng,QIN Jiming,WEI Juren,WU Beixing
Abstract:Power cable is an important carrier of power transmission. To solve the problems of low accuracyand large computation in voicing diagnosis with traditional convolutional neural network model,a novel cable faultdiagnosis method based on multiple voicing features and lightweight convolutional neural network w...
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Number of views:2414 Amount of downloads:16356
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DANG Yihan,XU Chuanfang,WANG Shaozu
Abstract:Usually,the DC side of the traction rectifier requires a series LC resonant circuit to filter out thepulsating component of 2 times the grid frequency. When the resonant inductor on the DC side had a short-circuitfault,the pulsating component would be transferred to the motor side,the problems such as torque...
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Number of views:3380 Amount of downloads:15952
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LI Haifeng,CHEN Bin,CHEN Jin,HU Xiwen,LIU Youbin
Abstract:Line commutated capacitor high-voltage direct current( LCC-HVDC)is an important technicalform of high-voltage direct current transmission. Since the converter valve was composed of semi-controlled devicethyristors,the commutation failure of the inverter-side converter station has become a key issue affectin...
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Number of views:2567 Amount of downloads:15764
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FENG Kan,ZHANG Lezhen,ZHOU Long,HOU Yanlun,NIU Wei,BAO Chengjia
Abstract:An improved virtual impedance strategy with adaptive reactive power equalisation and bus voltagecompensation functions was proposed to address the reactive power equalisation and bus voltage drop issues inparallel inverters in island microgrids. By introducing an enhanced power decoupling strategy based on ...
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Number of views:3123 Amount of downloads:15763
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HUO Zhen,XIE Jingcheng,WANG Chenyu,LIU Hao,MENG Jianhui,GAO Benfeng
Abstract:Grid-forming(GFM)converter is a voltage source and has good adaptability and frequency-voltagesupport in weak grid,but is prone to oscillation instability in strong grid due to impedance characteristics. To solvethis problem,based on the analysis of the impedance characteristics of the GFM converter,an adap...
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Number of views:3363 Amount of downloads:15493
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QIAO Chunlin,JIN Chuxiong,CHEN Dong,LIU Jianming
Abstract:In response to the potential local electric field distortion and insulation weaknesses that may occurunder high-voltage operating conditions in 35 kV European cable connectors,a 35 kV European cable connectorsstructural design method based on adaptive geometric optimization was proposed. The method integrat...
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Number of views:3458 Amount of downloads:15428
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WANG Hao,LIU Naisuo,MENG Chao,FAN Ronggui,GONG Junlin,GAO Lianyan
Abstract:In order to solve the problem that the electrical cabinet of the original production and injectionsystem in the same well has a low intelligence level and cannot realize remote monitoring,diagnosis,restart andmaintenance through the network,an intelligent control software for production and injection in the...
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Number of views:3163 Amount of downloads:15401
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ZHOU Jinghua,YAN Tianle,GUO Leixuan,ZHANG Xiaowei
Abstract: With the high penetration rate of new energy power generation in microgrids and the application ofhigh proportion of power electronic equipment,coupled with the access of a wide variety of loads such as unbalanced and non-linear loads and energy storage device,the power quality problems in microgrids have ...
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Number of views:6432 Amount of downloads:15345
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ZHANG Guoqiang,NIU Ben,YANG Hua,WANG Gaolin,XU Dianguo
Abstract: Maximum torque per ampere(MTPA)control is one of the important methods to improve theefficiency of sensorless drive system of permanent magnet synchronous motor(PMSM). In the sensorless drivesystem,the traditional calculation method deduces the analytical solution of the optimal current vector angleaccordi...
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Number of views:3835 Amount of downloads:15344
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LIU Yue,JI Guosheng,ZOU Jun,WU Hongfei,YANG Yuan,GUO Yuedong
Abstract: The optimal design of the magnetic integration and integrated printed circuit board(PCB)windingbased on a high-frequency high-density LLC resonant converter was studied. Both the transformer and resonantinductor were integrated into only one magnetic core. By configuring the resonant inductor on the second...
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Number of views:5851 Amount of downloads:15229
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YUAN Minxin,YIN Zhonggang,LUO Peien,ZHANG Yanqing
Abstract: To address the problem of the long detection time of the current detection method during the opencircuit fault diagnosis of inverter insulated gate bipolar transistor(IGBT)of the permanent magnet synchronousmotor(PMSM)drive system,an error current polarity method based on model predictive current control(M...
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Number of views:3776 Amount of downloads:14977
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JIN Yongchun,CHEN Li,ZOU Yusheng,DUAN Chengwu,YAO Jian
Abstract: Due to the advantages of high efficiency,wide speed range,high torque density and great controlperformance,permanent magnet synchronous motors(PMSM)have been widely used in driving systems of electric vehicles(EVs). However,as the increase of power density,the problem of temperature rise caused by loss hea...
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Number of views:5007 Amount of downloads:14919
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MA Xiaolu,WANG Zhixiong,DUAN Yanmin,ZHANG Lei,WU Yi,QI Zhuoya,HOU Jue
Abstract: The significance of promote high-efficiency motor and motor system in China was analyzed bymeans of literature research,questionnaire survey and enterprise survey. Policies and measures for the promotion of high-efficiency motors and motor systems were sorted out. Conduct market research on high-efficiency...
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Number of views:6436 Amount of downloads:14795