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MA Tao,XIAO Zhiyun,ZHANG Yonghong,DAI Zehui,WANG Zhiqiang
Abstract: In order to improve the reliability of LCL-filtered grid-connected three-phase inverter when using asliding mode controller,a novel sliding mode control strategy with less sensors in the abc natural frame was designed.Firstly,the sliding surface functions of phase a and phase b in the abc natural frame wer...
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Number of views:2972 Amount of downloads:1118
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DUAN Huiqin,HUANG Zhiyong,DU Shuping,YAN Tianbi,WEI Yongheng,WEI Hongxing,CHENG Zhuo
Abstract: Bidirectional DC-DC converter is the key equipment to realize the power balance of DC microgrid,and the accurate distribution of load current is one of the main objectives of multi converter parallel control. Aimingat the current sharing problem of bidirectional DC-DC converter,a current sharing control ba...
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Number of views:2709 Amount of downloads:1114
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FU Lulu,ZHAO Hong
Abstract: The classical model prediction algorithm of three-level grid-connected converter has manydisadvantages,such as large computation,unfixed switching frequency and difficulty in selecting weight factors,which limit its development in grid-connected converter field. To solve above problems,a modified control a...
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Number of views:2788 Amount of downloads:1112
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TIAN Kai,WANG Ziman,CHU Zilin,YU Zhibin,YUAN Yuan,SONG Peng
Abstract: A method to extract the equivalent thermal resistance parameters of double-sided water-cooledheatsink was proposed. Based on this method,the real-time calculation of junction temperature and overtemperature protection of integrated gate commutation transistor(IGCT)power device were implemented by the water...
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Number of views:2423 Amount of downloads:1111
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XU Qiongguo,ZHANG Weitao,LIU Guangwei,ZHOU Bin
Abstract: Independent DC microgrid with distributed power supply and energy storage system plays animportant role in improving power supply reliability. The energy scheduling optimization of DC microgrid underdifferent operating modes was discussed,including diesel generator,fuel cell,micro gas turbine,photovoltaic,...
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Number of views:2440 Amount of downloads:1109
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LI Qinzhao,ZHAO Xuemin
Abstract: When the microgrid is operating in island mode,the cascaded H-bridge(CHB)converter as aninterface device may need to be configured with a non-sinusoidal reference wave of pulse width modulation(PWM)when implementing auxiliary functions such as negative sequence compensation. In order to avoid overmodulatio...
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Number of views:2368 Amount of downloads:1108
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CHENG Zhiyuan,WU Longfei,LI Zheng,SUI Licheng,WU Xiaoting
Abstract: Current transformer(CT)inductive energy extraction is the most effective power supply method foronline monitoring equipment of power transmission cables. However,the low current of the transmission cable willcause the CT to fail to obtain energy,which will lead to the occurrence of equipment energy supply ...
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Number of views:2332 Amount of downloads:1103
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GAO Xiaozhi,QIAO Yu,CAO Xin,LI Zheng,SUN Huiqin,SUN Hexu
Abstract: DC active power filter(DC-APF)can effectively suppress the bus voltage ripple of DC microgrid. Inorder to solve the problem that DC-APF can not work normally due to the failure of switching devices,a fault-tolerant DC-APF topology based on H-bridge converter was proposed,which could ensure the power qualit...
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Number of views:1993 Amount of downloads:1098
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CHENG Jin,PAN Zhixuan,CHENG Haifeng,DAI Mingli,HUANG Minli
Abstract: With the continuous improvement of the penetration rate of wind turbines,in order to suppress thevoltage/frequency fluctuations of the doubly-fed induction generators(DFIGs)after grid-connected due to their own active power output fluctuations,aDFIGinertia support and primary frequencymodulation control ba...
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Number of views:1739 Amount of downloads:1094
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YOU Hao,SHI Hengchu,YANG Yuanhang,LI Yinyin,ZHU Qingcheng,XU Tengfei
Abstract: In order to solve the problems that the portable wave recording device needs to sample AC/DCvoltage samples with different input voltages,AC/DC current signals with different input currents and high sampling rate,an analog signal isolation sampling circuit was designed for portable wave recording device.Th...
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Number of views:2792 Amount of downloads:1093
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LI Mingyang,NIU Pingjuan,LI Yuhong,LI Ying,SUI Yu
Abstract: The offset characteristics of transmitting and receiving coils manufactured by different wirelesselectric vehicle manufacturers are a critical issue to ensure the interconnection of domestic and international vehiclecharging. The 3.7 kW wireless energy transmission system was modeled and the SS-type topolo...
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Number of views:1977 Amount of downloads:1091
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LIU Siyan
Abstract: In order to realize the speed estimation and speed regulation of the permanent magnet synchronousmotor(PMSM)controller,a new type of fractional-order model reference adaptive speed observer was designed.Compared with integer-order observers,this strategy enhanced the adjustable degrees of freedom of the co...
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Number of views:2142 Amount of downloads:1089
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LÜ Feichun,HU Jingtao,ZHANG Wentao,HU Dong,WU Xu
Abstract: In recent years,the large-scale grid connected operation of distributed energy has led to the gradualevolution of traditional power users from simple power consumers to prosumers with both power production andconsumption capacity,and can orderly participate in market transactions under the guidance of mark...
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Number of views:1228 Amount of downloads:1086
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HUANG Haihong,HUANG Yuwei,LIU Xin
Abstract: Aiming at the requirements of portable DC insulation detection devices,a dynamic differencealgorithm based on single-arm was proposed,and a portable DC insulation detection and verification integratedmachine was designed based on this algorithm. The principle of the single-arm insulation monitoring system ...
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Number of views:2037 Amount of downloads:1085
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DING Yi1,LIU Shengzhong,WANG Xudong,HUO Xianxu,HU Zhigang,JIANG Fan
Abstract: The estimation method of state of health(SOH)of lead-acid battery based on chaotic particle swarmoptimization-Gaussian process regression(CPSO-GPR)was proposed. Firstly,the voltage and current curves of leadacid battery during charging process were investigated,and the characteristics of constant current c...
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Number of views:2870 Amount of downloads:1085