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LIU Dongchao,XIONG Muwen,GAO Sen,ZHAO Senlin,ZHU Herong,LI Haitao
Abstract: Different types of partial discharge (PD) in gas insulated switchgear (GIS) cause different damage toGIS insulation. Correctly identifying the type of partial discharge is very important to evaluate the insulation statusof GIS. In order to simplify the process of feature extraction and improve the recognit...
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Number of views:3214 Amount of downloads:1327
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ZHOU Liying,XIA Changhao
Abstract: Three-phase bridge converters(TPBC)are widely used in low-voltage power distribution networksto compensate the negative-sequence current and the reactive current. Because of the relatively high costs,improving the compensation effect of limited capacity equipment has high economic value and research signif...
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Number of views:3177 Amount of downloads:1326
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ZHANG Yubo,LIU Xu,CAO Yang
Abstract: The hybrid excited segmental rotor flux switching permanent magnet(HESRFSPM)machine basedon eccentric pole was proposed. Under the condition of constant air gap area,the segmental rotor structure based on eccentric pole can reduce 2,4,10 radial air gap flux density space harmonic amplitudes by comparing ai...
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Number of views:2653 Amount of downloads:1318
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WANG Xing,TAN Peixiao,CHENG Zhijiang,MAWanqing,TIAN Bo
Abstract: Retired power batteries have poor parameter consistency,when they are used for energy storageafter series and parallel connections,the barrel effect is obvious and the failure rate is high. So the improved modular multilevel H-bridge converter(MMHC)distributed energy storage based on modular multilevel con...
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Number of views:2642 Amount of downloads:1316
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FU Xuhui,FANG Chun'en,XUE Tao,HUANG Leichao,CHEN Junping
Abstract: In order to ensure that the thyristor valve body can be accurately conducted during the solid state switch switching,a solid state switch trigger control unit was designed. Firstly,the structure and working principle of the solid state switch and the structure and function of the trigger control unit were ...
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Number of views:3307 Amount of downloads:1316
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YANG Zhaowen,YANG Guochao,LIU Jianjun,WANG Hongwei,BAI Xinyu
Abstract: A second order filtering power dividing frequency control strategy based on virtual impedance wasproposed. The different frequency power compensation among different storage units by building invisible passfilters was achieved. The invisible pass filters including high pass filter and low pass filters were...
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Number of views:3161 Amount of downloads:1313
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WANG Shanshan,NIU Ke,LI Hui
Abstract: In order to reduce the high cost of sampling circuits,simplify commutation procedure and improvethe conversion efficiency of the indirect matrix converter,a zero current commutation model predictive control(ZCC-MPC)strategy with the input voltage observation was proposed. The input voltage observer was des...
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Number of views:3080 Amount of downloads:1308
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ZHANG Yang,GAO Tian,LIN Weixing
Abstract: Photovoltaic inverter,charging pile,energy storage converter,wind power converter and othercommon power electronic equipment are three-phase high frequency AC/DC/DC converter,which is widely used inindustrial and civil fields. Due to the fast switching capability of three-phase high frequency converter,its...
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Number of views:3515 Amount of downloads:1305
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CHEN Hu,WANG Yangyang,PAN Yuedou
Abstract: In order to overcome the drawback of direct torque control of induction motor which has largetorque ripples at low speed,a generalized predictive control method was proposed and be used in the direct torque control of induction motor. The method was directly used in speed control,and didn' t depend on ...
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Number of views:3219 Amount of downloads:1300
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SHI Zhibo,MENG Jie,HAN Yong,LI Xueping
Abstract: Due to the application of a large number of power electronic equipments on the aircraft,the aircraftpower supply network tends to be complicated,and thus there is an urgent need to effectively evaluate the powerquality of the power supply network. In order to evaluate AC power quality of aircraft,a compreh...
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Number of views:3263 Amount of downloads:1300
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NIU Qian,ZHANG Dong,WANG Junlong
Abstract: Aiming at the problems of uneven power distribution and poor stability of grid AC/DC microgrid,anew adaptive coordinated control strategy was proposed to improve the stability and power distribution accuracy ofAC/DC microgrid(MGs)system.First,for converters connectingAC microgrids and DC microgrids,a contr...
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Number of views:3353 Amount of downloads:1299
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DENG Dawei,LIU Peilin,ZHUWen,HE Chaolin,XIAWei
Abstract: In order to improve the substation dispatching and the adaptive control ability,an optimizationmethod for consistency test of substation dispatching center single line diagram modulus diagram based on theanalysis of equivalent inertia characteristics was proposed. The power control parameters of the substa...
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Number of views:3006 Amount of downloads:1287
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GU Ming,XING Meng,GE Xianjun
Abstract: Aiming at the complex problem of weight factors tuning when the induction motor driving systemadopts the finite set model predictive control,an optimal finite set model predictive controller without weightdistribution for induction motor driving system was designed. In the new scheme,the form of sequential...
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Number of views:3261 Amount of downloads:1282
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LI Xuhui,XIE Baihuang,HUANG Xiaoyong,XUYan
Abstract: The collector line short-circuit fault is one of the most common faults for the grid-connected doublyfed wind farms. Because the introduction of the crowbar discharge resistor,after the unsymmetrical faults of the collector line,the positive and negative sequence impedances of DFIG will produce the differe...
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Number of views:3209 Amount of downloads:1277
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MA Zhousheng,YAO Yang
Abstract: A novel DC current-voltage droop control method was proposed for a hybrid high-voltage directcurrent(HVDC)system composed of a voltage source converter(VSC)and a line-commutated converter(LCC).The DC voltage droop control was used to reduce AC voltage fluctuation on the inverter side,so as to achieve thego...
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Number of views:3070 Amount of downloads:1276