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WAN Jiangkun,SUN Yanchao,SONG Pengyu,NIU Zenong,HUANG Wenxin
Abstract:The traditional three-loop position control applied in the servo system with elasticity causesresidual vibration around the objected position and has long trailing time. To address this issue,a mathematicalmodel of the two-inertia system was established,and the causes of low-damping of the traditional posit...
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Number of views:2955 Amount of downloads:12991
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JIA Dexiang,ZHONG Cheng,LIU Zhanjie,ZHENG Houqing,GUO Yang
Abstract: Photovoltaic(PV)generation usually operates in maximum power point tracking(MPPT)mode,which cannot provide inertia and frequency support for the power system. Virtual synchronous generator(VSG)control is an attractive control method that can provide the similar behavior of synchronous generator(SG).However...
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Number of views:2953 Amount of downloads:10208
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GAO Jixin,ZHU Jianzhong,HAH Xiao,ZHOU Yancheng,XU Jing
Abstract:In islanded DC microgrids,line impedance and load fluctuations lead to uneven power distributionand voltage deviation,threatening system stability and affecting energy storage lifetime. Existing droop controlstrategies need to preset a fixed initial droop coefficient,which makes it difficult to balance the ...
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Number of views:2952 Amount of downloads:13000
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WANG Chaoliang,XIAO Tao,CHEN Songsong,ZHANG Hongzhi,CHEN Ke
Abstract:With the proposal of the "dual carbon" goal,the application of EVs is becoming increasinglywidespread. In order to further reduce the charging cost of EVs so as to easing the charging cost burden of EVusers,a coordinated control strategy for EV charging DC microgrid was proposed,which includes photovoltaic(...
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Number of views:2952 Amount of downloads:8011
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HU Changbin,MA Tengfei,MA Jianli,XU Zheng
Abstract: Distributed power generation technology is an important part of modern smart microgrid,in whichthree-port isolated DC converter plays an important role. Because the storage battery system can realize the flowand storage of energy,so the combination of three-port isolated DC converter and photovoltaic power...
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Number of views:2951 Amount of downloads:8326
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JIN Haotian,LI Haifeng,MA Kai,TAN Lingqi,LI Jia
Abstract:For the half-bridge modular multilevel converter(MMC)bridge arm in a control cycle within theinput and removal of the submodule of the respective capacitance voltage sequence before and after the relationship of the characteristics of the same,based on the last cycle of the submodule switching state and the...
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Number of views:2943 Amount of downloads:15229
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LI Jianjie,GAI Pengyu,WANG Lihua,ZHANG Jian,SUN Hongbo,XIN Chunqing
Abstract: In order to improve the optimal allocation of renewable energy in microgrid and reduce theuncertainty of source load in microgrid,a multi-objective coordinated scheduling optimization method for microgrid based on Pearson correlation coefficient meta-learning(PCC-ML)source load prediction was proposed. Fir...
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Number of views:2939 Amount of downloads:10916
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WANG Yihan,FENG Chuanxin,JIN Tao
Abstract:To solve the problem of neutral point voltage imbalance when the three-level neutral point clamped(NPC)inverter works,an improved neutral balance model predictive control(INB-MPC)algorithm was proposed.The proposed method used a two-stage voltage vector selection method with no weighting factors,deleted the...
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Number of views:2937 Amount of downloads:11139
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ZHANG He,CAO Tianbi,LI Xianyun
Abstract: In view of the complex transient characteristics of short-circuit faults in DC power network and thedifficulty of fault identification,the short-circuit faults in DC power network can be identified by detecting the change of capacitance voltage through the analysis of the VSC topology and switch characteri...
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Number of views:2924 Amount of downloads:7269
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ZHOU Hanying,LIANG Junyu,YANG Jiaquan,GAO Jing,YUAN Xingyu,JIN Xiaolong
Abstract:New energy power generation has strong volatility and randomness,and its large-scale gridconnection seriously affects the stable operation of power grid frequency. The new generation of power system alsorelies on communication network for data transmission,which will consume a lot of network resources and i...
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Number of views:2921 Amount of downloads:11771
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LI Peiying,XIA Jiakuan,WAN Chengchao
Abstract: In view of the mechanical vibration of the manipulator joint servo system due to the existence offlexible links such as harmonic reducer and toothed belt,a mathematical model considering the change of stiffnesscoefficient and large reduction ratio was established,the mechanism of mechanical resonance was a...
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Number of views:2917 Amount of downloads:8413
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HAN Junkang,HAO Sipeng,LI Shuheng
Abstract:The high proportion of new energy grid connection increases the frequency fluctuation of the powergrid,and grid-forming energy storage is regarded as a key resource to improve frequency stability due to its fastresponse and inertia support capability. To address the underestimation of fast-response resource...
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Number of views:2912 Amount of downloads:13199
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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...
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Number of views:2902 Amount of downloads:9149
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ZENG Jiang,XIONG Taojun,XIE Baoping,ZHAO Benqiang,MA Haijie
Abstract: Aiming at the deficiency that the traditional active power filter(APF)can only control the localharmonic source,a harmonic active defense system(HADS)based on virtual harmonic resistance was proposed.The principle of harnessing harmonics in distribution network by HADS was analyzed,the HADS simulationmodel...
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Number of views:2897 Amount of downloads:8713
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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:2888 Amount of downloads:8343