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WANG Yingjie,ZHOU Hailan,CHEN Yongfa,BAI Feiying
Abstract:When the switching frequency of the four-quadrant rectifiers in different multiple units deviates,thecurrent will experience low-frequency oscillation,which is not conducive to the operation of the traction powergrid. Therefore,a matrix small-signal modeling method for SPWM comparators was proposed to analy...
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Number of views:1506 Amount of downloads:3637
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LI Xinhai,FAN Dehe,MENG Chenxu,ZENG Lingcheng,YUANTuolai
Abstract: Due to various environmental factors,the relay platen status recognition needs manual inspection fora long time,and the current popular platen image recognition program requires a huge background computingarchitecture,which can not immediately obtain the verification information in the operation site,and s...
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Number of views:1504 Amount of downloads:4171
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PENG Daogang,GAO Yimin,QI Erjiang,ZHOU Yang,WANG Yongkun
Abstract: Oil spills from thermal power plants can pollute the drainage outlet,if not dealt with in time,it willalso pollute the river environment. Drainage outlet monitoring is from the angle of depression,therefore it is hard to identify accurately with the rectangular detection frame. Based on the image from the ...
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Number of views:1502 Amount of downloads:2439
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PENGTao
Abstract: The local leakage signal of high-voltage insulation equipment is weak and its characteristics are notobvious,which can only explain whether there is discharge. There is a phenomenon of missing judgment andmisjudgment in the actual positioning process,which is difficult to accurately locate the high-voltage...
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Number of views:1498 Amount of downloads:2029
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JIA Pengfei,HE Yongpeng,YANG Jianxin,ZHANG Qing,WU Wenda
Abstract:Industrial communication technology is an effective way to achieve network control of industrialequipment. With the development of Ethernet technology in recent years,a top layer application technology basedon Ethernet,PROFINET has rapidly developed. However,due to the lack of high-speed network interfaces ...
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Number of views:1493 Amount of downloads:2405
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WU Bing,WANG Jianliang
Abstract:The common-mode equivalent circuit model of the motor is the basis for analyzing the electricerosion of bearings,especially for analyzing the technical problems and experimental phenomena of shaft voltageand shaft current,among which the centralized equivalent model is an important calculation basis for the...
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Number of views:1492 Amount of downloads:3586
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HU Qingjun,CAO Xinhui,FENG Yu,ZHU Lipeng,ZHAO Wenjing,WEI Yushan
Abstract: The process automation control system L2 of an aluminum zinc plating production line wasexplored. In response to potential production faults on the production line,a process data control module of theprocess automation control system was provided. Through the analysis of process data,the fault location of ...
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Number of views:1487 Amount of downloads:4424
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LU Guijun,JIA Pengfei,WANG Yubo,LIU Jing,YU Shouquan
Abstract: Permanent magnet synchronous motors play an important role in industrial automation,automotive,aerospace,household appliances,and other fields due to their high efficiency,high power density,good torque performance,and ease of control. However,in the field of electrical transmission,it is not onlynecessary...
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Number of views:1485 Amount of downloads:2295
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LÜ Zhengyu,ZHOU Liang
Abstract: In the process of controlling the voltage of active distribution network,there are problems of poorvoltage control effect and low efficiency. A two-stage automatic voltage control method of active distributionnetwork considering load measurement was proposed. Using the probability density function (PDF) cu...
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Number of views:1480 Amount of downloads:2120
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YANG Tianxiang,CHENG Zhijiang,YANG Handi,TIAN Feng
Abstract: Aiming at the demand of intelligent coal mine and exit problem of underground coal mine powernetwork,an energy storage hybrid distribution transformer based on modular multilevel converter(MMC-HDT)was proposed. Firstly,the proposed energy storage MMC-HDT was modeled and four operation modes were givenconsi...
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Number of views:1478 Amount of downloads:2856
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HU Dong,HU Jingtao,ZHANG Wentao,LÜ Feichun,WU Xu
Abstract: Photovoltaic(PV)power generation is an important power generation method to achieve the goal ofcarbon neutrality. During the grid connection of PV power generation system,due to the characteristics of inverterand the influence of nonlinear load,high-order harmonics are generated,the power quality of the po...
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Number of views:1477 Amount of downloads:2567
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CHEN Xiaoru,HUANG Longyi,YANG Mingjia,LAI Shengjie,CHI Zibin,XIA Chengjun
Abstract:In view of the lack of flexibility in the input and exit of the current metal sheath loop suppressiondevice for high voltage cables,the problems such as excessive induced voltage of the sheath and excessive powerloss were not considered when determining the suppression impedance value,a loop suppression dev...
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Number of views:1472 Amount of downloads:4200
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JI Huancong,XIA Chengjun,WANG Zeqing,LAI Shengjie
Abstract: Aiming at the problems of high cost and poor voltage quality in the conventional power distributionscheme of long-distance electrical equipment of rail transit,a technical scheme of DC power distribution for longdistance electrical equipment was proposed to achieve the purpose of improving voltage quality ...
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Number of views:1472 Amount of downloads:2539
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LIU Fang,XU Yunyu,HE Guoqing,LI Guanghui,LIU Shiquan,LIU Wei
Abstract: With the increasing permeability of distributed generation,the grid becomes weaker and weaker. Itis very important to help the system achieve low voltage ride through(LVRT)when the grid voltage drops underweak grid. Aiming at a series of problems such as over-current,voltage collapse and system oscillation...
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Number of views:1472 Amount of downloads:2520
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LI Ning,LIU Ming,ZHANG Changjie,ZHANG Chenglin
Abstract:At present,the traditional passive filter in on-board charger(OBC) has poor low-frequencyperformance,an active feedback loop was added to the traditional on-board charger passive filter,a design method of on-board charger electromagnetic interference(EMI)hybrid filter based on current sensing and current in...
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Number of views:1470 Amount of downloads:2149