Power electronics
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LIANG Zhen，WANG Yong，BAI Haibin，ZHANG Zhiyu，SUN Qianhao，CUI Bin
Abstract: Based on full-bridge（FB）and half-bridge（HB）sub-modules（SMs），the conventional hybridmodular multievel converter（MMC）is a typical topology of MMC with DC fault clearing ability. However，theproportion of FB SMs in conventional hybrid MMC is usually greater than 50%，so as to increase the cost andlosses. To sol...
更多Number of views：867 Amount of downloads：1146
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TIAN Bin，SUN Quanhui
Abstract: AC/DC switching power supply is the main source of electrical system，its development trend islarge capacity，high power density，high efficiency，low power factor and low harmonic content. However，there are still some common problems with existing digital power supplies，including poor anti-interference abilit...
更多Number of views：1176 Amount of downloads：1310
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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...
更多Number of views：1044 Amount of downloads：1009
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ZHANG Di，HUANG Lu，CUI Jing，SONG Zhiwei
Abstract: The AC voltage sensors are used to measure the grid voltage，which brings high hardware cost，difficult installation and low reliability. In order to realize that grid voltage sensors are not necessary，virtual fluxwas introducted to model prediction power control algorithm for cascaded H-bridge rectifier. Th...
更多Number of views：1066 Amount of downloads：1149
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ZHANG Xiangqian，CHE Chaochang，LI Fengsheng，YU Shipeng，LEI Hui
Abstract: As an important part of power electronic power conversion device，auxiliary power supply is facedwith the application demand of high voltage and wide range in DC transmission，solar power station，wind powerstation and other systems. Aiming at the problems of switch stress，cost and efficiency caused by high v...
更多Number of views：1123 Amount of downloads：1251
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LAI Guoqing，LAI Qun，LI Ming，FENG Chaokun
Abstract: In the application of renewable energy power generation，multi-input-port power conversion systemis a high cost-effectiveness option. A multi-input-port DC-AC conversion system based on single-stage nonisolatedbuck-boost power conversion cell was propsed . Each type of DC source flows into the full-bridge c...
更多Number of views：1033 Amount of downloads：1161
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WANG Pengcheng，PAN Ligang，WANG Yijie
Abstract: The emergence of wireless power transmission（WPT）technology overcomes the strict requirementsof traditional wire transmission process on transmission site conditions，maintenance convenience and security，which has a wide range of application scenarios. In the WPT technology，the misalignment tolerance charac...
更多Number of views：1068 Amount of downloads：1096
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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 ...
更多Number of views：1142 Amount of downloads：1292
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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：1226 Amount of downloads：1225
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JIANG Jingwen，ZHOU Jiemin，HONG Feng，ZHENG Gang
Abstract: On the basis of LLC，considering from the perspectives of soft-switching technology，DC/DCcascade converter technology and three-level technology，a new DC/DC composite cascade structure topology onthe basis of Buck-LLC structure was proposed. A 980 W prototype was designed and built for verification，whichpro...
更多Number of views：1223 Amount of downloads：1146
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WANG Jiarong，DAI Guanghua，HU Liang，GAO Jingxiang
Abstract: In order to realize the application requirements of SiC power devices，a novel dual edge-triggeredisolated drive circuit was proposed. The circuit have the advantages of full isolation of driving signals，strongdriving ability，wide switching frequency range with 0 Hz～500 kHz signal transmission and strong of...
更多Number of views：1263 Amount of downloads：1320
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GONG Yanchao，YANG Haiyun，MIAO Junjie，GAO Zhi
Abstract: Parallel capacitor banks can effectively improve the efficiency and quality of power transmission inthe application process of power distribution network. However，due to some unreasonable factors in the switchingmode of power capacitors，it will also generate overvoltage，thus affecting the power grid. stabi...
更多Number of views：1333 Amount of downloads：1108
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TIAN Kai，YU Zhibin，YUAN Yuan，CHU ZiLin，CHEN Yujie，SUN Chuanjie
Abstract: A test method was proposed that can evaluate the ultimate power output capability of large capacityIGCT three-level converter. Based on synchronous symmetrical PWM modulation and temperature estimationmodel，the power experiment of IGCT three-level converter was carried out，which can test the equipment capa...
更多Number of views：1311 Amount of downloads：1128
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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：1178 Amount of downloads：1508
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CHENG Shiwei，ZHAO Shiwei
Abstract: To cope with the increasing demands of the application of high step-up DC-DC conversion，such asthe absorption of renewable energy，electric vehicles and aerospace，a high step-up DC-DC converter based onthree-winding coupled inductor with low voltage stress was proposed by utilizing magnetic coupling technol...
更多Number of views：1371 Amount of downloads：1341
