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JIAO Jinghai,LI Jie
Abstract: To solve the problem of low identification accuracy of partial discharge(PD)for electric multipleunits ethylene propylene rubber(EPR)cable terminal defects,an on-board cable terminal defect identificationmethod based on improved residual network was proposed. Firstly,cable terminals with four typical insul...
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Number of views:1048 Amount of downloads:1028
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DU Jifei,WANG Yang,WANG Li,LIU Haoruo,MU Yunfei,SUN Qiang
Abstract:The primary side feedback can stabilize the output voltage,and improve the service life of theequipment without using the secondary winding detection error signal. The topology of active filter and theimproved method of primary side feedback were adopted. The performance of active EMI filter topologies wasa...
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Number of views:793 Amount of downloads:1026
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CUI Mengyu,YIN Qinglong,GUO Xudong,LÜ Tuo,HU Qifeng,LIU Zhengyan
Abstract:The VPX power standard is currently the most compatible military embedded computer standardinternationally,and its modules can stably power multiple different functional modules in the chassis. A VPXpower board based on VITA46 and VITA62 standards was designed. The design architecture,ideas,and functionsof ...
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Number of views:811 Amount of downloads:1025
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XIA Tao,LIU Liang,ZHANG Yangfei,LIU Haitao,MENG Gaojun
Abstract:Aiming at the problem of large output voltage fluctuation and long recovery time of three-phasepulse-width modulation(PWM)rectifiers when the load changes,an improved single-neuron gradient learningcontrol strategy was proposed. Due to the poor adaptability of the traditional PI controller parameters when t...
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Number of views:836 Amount of downloads:1025
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YIN Qiyun,YANG Chen,LU Hongjian,ZHAO Xinyang,AN Yanjie,CHEN Haoyang
Abstract: Aiming at clarifying the interference effect of 5G electromagnetic radiation on relay protection andcommunication control equipment in converter station,a microstrip antenna simulation model with a centerfrequency of 3.5 GHz was established. Firstly,the propagation and attenuation law of electromagnetic ra...
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Number of views:938 Amount of downloads:1015
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XU Shizhou,CHANG Jinhai,FAN Jingsheng,JIA Xinxin
Abstract:A method for establishing edge triggered pulse control switch state time was proposed to address thedivergence of floating capacitor voltage and DC capacitor midpoint voltage in a 5-level active neutral point clamped(ANPC-5L)inverter using the space vector pulse width(SVPWM)algorithm in the g-h coordinate s...
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Number of views:844 Amount of downloads:1014
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CUI Yulu,SHANG Xingming,QIAN Xin,TONG Xiaoqing,ZHANG Zhiguo
Abstract:In response to the susceptibility of wind storage DC building microgrid systems to externalinterference,the DC bus is prone to instability during multi-mode switching and high-power load switching,posing a serious threat to the safe and reliable operation of electrical equipment. A large-signal simplified m...
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Number of views:358 Amount of downloads:1012
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ZHAO Weicheng,MA Haoyuan,HUANG Jinming,CAO Xin,KE Xingsi
Abstract:Voltage source converter(VSC)working as the interface of new energy stations connects to urbanmain network with long-distance AC line,which results a weak grid connected condition and has a risk of DCvoltage instability. To analyze the mechanism of DC voltage instability of weak grid connected VSC,a DC volt...
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Number of views:291 Amount of downloads:1009
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LI Liping,SHAO Pengcheng
Abstract: It is difficult to track and control the vibration of inspection robot because of its flexible operationspace. In order to ensure the high efficiency and accuracy of the inspection robot,the position and posture servocontrol strategy based on finite difference method was proposed. The dynamic model of posi...
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Number of views:1140 Amount of downloads:1009
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GUO Jiahao,YANG Xiong,FANG Xin,GUAN Jiamin
Abstract: The secondary voltage signal output by electronic capacitive voltage transformer in the primary andsecondary fusion equipment is very weak,which is easy to be interfered by high-order harmonics,resulting inunstable signal transmission. In order to solve these problems,a high-order and high-precision filter...
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Number of views:1164 Amount of downloads:1008
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LI Yajun,HE Shan,HU Bing,XIE Shaohua
Abstract:Aiming at the problems of high investment cost,low efficiency of electrolyzer operation and highfluctuation of power input in the new energy electrolytic water to hydrogen microgrid system,the scenery hydrogen production capacity configuration scheme with the installation cost of microgrid equipment and the...
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Number of views:861 Amount of downloads:1007
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WU Jiawei
Abstract:Electrically assisted manufacturing(EAM)is a promising and rapidly developing metal processingmethod.The power supply is a key sub-system for EAM,which needs to be designed properly. the model-baseddesign of a low-voltage high-current pulse power supply used for EAM was proposed based on converter-levelelec...
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Number of views:1060 Amount of downloads:1007
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JI Liang,XU Jun,GUAN Ya,CUI Jingxia,HE Jie,PAN Yihang
Abstract:The three-core underground cable in the distribution network works in a harsh environment. Due tothe influence of aging,external force,high temperature and humidity,the insulation of long-term live operation iseasily damaged and causes faults. Aiming at the single-phase grounding fault of cable in distribut...
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Number of views:571 Amount of downloads:1006
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ZHANG Wei
Abstract:The multi-source monitoring data of switchgear contains rich equipment operating statusinformation,and analyzing it can achieve switchgear fault diagnosis. A fault diagnosis method for switchgear basedon SMOTE-SSA-CNN was proposed. Firstly,based on monitoring data such as switchgear voltage,current,andtempe...
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Number of views:715 Amount of downloads:1005
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CHEN Dongdong,ZHANG Shengqi,XIAO Long
Abstract:Due to the wide control bandwidth of the shunt active power filter(SAPF),the resonance problemof the LCL output filter has become a key problem of the SAPF. To solve the resonance problem of the LCL filter,anovel damping method based on active damping circuit was proposed to achieve the damping effect witho...
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Number of views:1074 Amount of downloads:1004