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YAN Yulin，XIAYankun，LIU Liyou
Abstract: In order to achieve equal current, a constant current source should be used to drive the LEDs. Aconstant current source based on two output Cuk improved circuits was proposed. The circuit structure, workingmode and constant current principle were analyzed, and the voltage, current and power expressions wer...
更多Number of views：871 Amount of downloads：853
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CHEN Weikang，WANG Haixin，ZHANG Zhiyong，CHEN Zhenyu，SHEN Jie
Abstract：Flux-weakening control technology can effectively broaden the speed range of the permanentmagnet synchronous machine（PMSM），therefore，it is of great significance to the research on the flux-weakening control of permanent magnet synchronous machine. Most of flux-weakening modified the flux-weakening current c...
更多Number of views：869 Amount of downloads：805
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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...
更多Number of views：866 Amount of downloads：651
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LIU Zhijian，ZI Chao，LI Pengcheng，GUO Cheng，LIU Jie，HUANG Wei
Abstract: Aiming at ultra-low frequency oscillation in power system caused by hydraulic turbine governingsystem，an additional damping control strategy for governing side was developed. Firstly，according to the damping torque method，the negative damping generated by the hydraulic turbine governing system was regarded...
更多Number of views：863 Amount of downloads：692
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WU Zhiheng，LIU Aimin
Abstract: The motor actuator used in circuit breaker has the advantages of simple structure，small dispersal ofaction and strong controllability，which provides the possibility for the switch contact of circuit breaker to followthe preset reference curve. The traditional control method can not adjust the parameters ac...
更多Number of views：860 Amount of downloads：719
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WANG Linfeng，XU Nan，NIE Jing，XIE Yantao，SONG Yan
Abstract: Investment estimate prediction model in traditional transmission line（TTL）project has problemssuch as large deviation from the actual cost and low efficiency of estimation management. Thus，a novel investmentestimate prediction model in TTL project was presented with assistance of principal component analys...
更多Number of views：860 Amount of downloads：1086
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WANG Xuming，LUO Cheng，XIONG Zhi，YANG Kai，XU Zhijie，LI Yinbin
Abstract：In response to the complex working environment of pumped storage energy units，wheredisturbances such as temperature variations are prominent，and considering the insufficient control precision oftraditional vector control for brushless doubly-fed machine（BDFM），a study was conducted on a control strategybased...
更多Number of views：858 Amount of downloads：742
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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...
更多Number of views：856 Amount of downloads：1055
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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...
更多Number of views：856 Amount of downloads：674
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ZHU Ye，CHEN Yuanrui，CHEN Yang，WANG Zhenlin
Abstract：The safe and efficient operation of lithium batteries depends on accurate state of charge（SOC）estimation. However，the traditional battery model and SOC estimation have poor robustness and reliability undernoise interference. Aiming at the problem of SOC cooperative estimation under noise interference，firstl...
更多Number of views：851 Amount of downloads：743
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ZHOU Zhifeng，ZHU Wen，XIAWei，FANG Wenchong，HE Chaolin
Abstract: Under the background of energy internet，due to the access of massive sensor nodes，the amount and types of data in energy internet have increased dramatically，and centralized data processing has a great impact on the updating of substation drawing model. Therefore，a control measure of automatic updating of ...
更多Number of views：846 Amount of downloads：891
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LIU Hao，WEI Lixin，YOU Lichun
Abstract: Due to the particularity of its application，offshore drilling rig has higher requirements for thestability and control accuracy of the control signal. Aiming at the situation that the signal in the electronic controlsystem of offshore drilling rig is greatly disturbed by noise，a PID control signal optimiza...
更多Number of views：842 Amount of downloads：642
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YUE Xuelei，WANG Lei，TIAN Di，XU Kelei
Abstract: Permanent magnet synchronous motor（PMSM）has become the development direction of the newgeneration of rail transit traction system due to its characteristics of high efficiency and high power density. Amongthem，the research on the identification method of the initial position and frequency of the motor roto...
更多Number of views：833 Amount of downloads：580
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TONG Xin，SONG Guobing，ZHANG Zhihua，WANG Junfeng，LEI Zhirong
Abstract: Due to the change of the ground parameters of the distribution network after the single-phasegrounding fault，the traditional active arc suppression method based on the ground parameters in the normaloperation state has a deviation between the compensation current reference value and the actual value. Incons...
更多Number of views：832 Amount of downloads：837
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LI Zhijuan，WU Dan，LEI Ting，WANG Ning，DUAN Yan，MA Hongen
Abstract: Aiming at the problems of frequent failures and untimely maintenance of DC charging pile，a faultearly warning method of DC charging pile based on soft classification model was proposed. Based on the currentsequence and voltage sequence of the charging pile in the charging process，the differential sequence o...
更多Number of views：831 Amount of downloads：757
