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CHEN Biao,HAN Zhongxiu,MA Liqiang,ZHANG Renhe
Abstract:The back-to-back active neutral-point-clamped(ANPC)converter,as the core component of theunified power flow controller of the distribution network,is widely used for the flexible closed-loop operation.However,the ANPC converter has more switching devices and commutation paths,which significantly increasesth...
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Number of views:2500 Amount of downloads:10547
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WANG Huahan,ZHAO Shiwei
Abstract:A dual active bridge(DAB)DC-DC converter voltage control strategy based on double-integralsliding mode control was proposed,which can obtain good control effect under the condition that the modelaccuracy requirements are low and the controller design process is simple. Firstly,the reduced-order model of the...
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Number of views:2497 Amount of downloads:8888
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DU Jifei,WANG Yang,WANG Li,LIU Haoruo,MU Yunfei,SUN Qiang
Abstract:The primary side feedback can stabilize the output voltage,and improve the service life of theequipment without using the secondary winding detection error signal. The topology of active filter and theimproved method of primary side feedback were adopted. The performance of active EMI filter topologies wasa...
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Number of views:2496 Amount of downloads:9490
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CAI Weiliang,CHENG Haifeng,PAN Zhixuan,CHENG Jin,DAI Mingli
Abstract: The grid connection of doubly-fed induction generator(DFIG)leads to the reduction of systemequivalent inertia and primary frequency regulation capacity. With the increase of DFIG grid connection scale,theproblem of system frequency regulation becomes more and more serious. In view of this problem,frequency...
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Number of views:2496 Amount of downloads:7484
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ZHOU Jinwei,DING Dawei,JIANG Xuexiang,REN Zhaoting,LI Xizhi
Abstract:Maximum torque per ampere(MTPA)control can effectively improve system efficiency throughreducing copper loss,which is suitable for air conditioning permanent magnet compressor system. However,due to the inverter non-ideal characteristics,the tracking accuracy of the optimal current vector angle decreases. T...
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Number of views:2494 Amount of downloads:7938
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GUO Jiahao,YANG Xiong,FANG Xin,GUAN Jiamin
Abstract: The secondary voltage signal output by electronic capacitive voltage transformer in the primary andsecondary fusion equipment is very weak,which is easy to be interfered by high-order harmonics,resulting inunstable signal transmission. In order to solve these problems,a high-order and high-precision filter...
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Number of views:2493 Amount of downloads:8838
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YANG Zhenyu,WANG Wei,XU Wenzheng,ZUO Zhiling,CHEN Changqing
Abstract:The telecommunication power supply applied in 5G base stations can save energy consumption byreducing the output voltage when the equipment works in standby state. Nevertheless,frequent and rapid outputvoltage regulating of the converters is challenging. To solve this problem,the concept of partial power co...
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Number of views:2492 Amount of downloads:7815
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XU Qianxi,ZHAO Yangyang,CHEN Xueni,YU Yingjun,YOU Rui
Abstract:The load-transfer after the distribution area fault and mutual power support between distributionareas can be realized with the flexible interconnection device(FID)based on power electronic devices. Aiming atthe becoming increasingly prominen three-phase unbalance problem,a three-phase current unbalance reg...
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Number of views:2490 Amount of downloads:12046
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GUO Shaokang,CHENG Zhijiang,XIAO Shihao,LI Lingqi,CHEN Xingzhi
Abstract:Aiming at the challenge of demand response uncertainty to the safe and economical operation ofintegrated energy system,a cooperative optimal scheduling model of multi-region integrated energy systemconsidering thermal pipe network transmission and demand response was proposed. Firstly,the energy transmissio...
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Number of views:2490 Amount of downloads:9059
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LI Ning,WANG Ruyue,ZHU Longhui
Abstract:In order to analyze the power quality problem of actual power network under the influence ofuncertain interference factors,a power quality detection and recognition method combining empirical wavelettransform(EWT)and improved S-transform was proposed. On the one hand,the frequency,amplitude and timeparamete...
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Number of views:2489 Amount of downloads:8335
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ZHANG Chunxiang,LI Xin,SUN Ning
Abstract:DC high current comprehensive characteristic test device is used to detect the released characteristicsof DC low-voltage electrical overcurrent protection electrical device,which is used in low-voltage electricalindustry for DC products for long time delay,short time delay,instantaneous tripping test and sh...
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Number of views:2480 Amount of downloads:8991
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ZHANG Baorui,WANG Jingtao,TAN Yao,WANG Zhiguang,LI Tang,SHI Yang
Abstract:Accurate short-term electrical load forecasting is of great significance for the design andoptimization scheduling of integrated energy systems(IES). However,the load data in real integrated energysystems are low-quality and fluctuating,so the forecasting accuracy of existing prediction models is low. A sho...
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Number of views:2477 Amount of downloads:7699
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LEI Aoyu ,LI Jun ,MEI Yong ,TONG Ning ,WANG Yu ,WU Wei
Abstract:The stability analysis of power system transient voltage,power angle,and frequency is often basedon short-time-scale electromechanical transient simulation,which requires a relatively accurate large-scalesimulation model,which not only has low simulation efficiency but also takes a long time,thus giving ris...
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Number of views:2476 Amount of downloads:8709
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LI Yunwang,CHEN Junde,ZHANG Daping,SANG Yun,HAN Xiaolei
Abstract:An adaptive active arc suppression method based on S-transform correlation degree for distributionnetwork unidirectional grounding was proposed to effectively eliminate single-phase grounding fault arc indistribution network and improve power system stability. The time series data of zero-sequence current o...
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Number of views:2472 Amount of downloads:7340
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DONG Yue,HE Yingfei,DU Lulu,TANG Mingjie,JIN Guangchao,ZHAO Jing
Abstract:Modular multi-level matrix converter(M3C)is a kind of new topology which can convert onespecified electric frequency to another directly,it is applicable to high voltage and large capacity scene. In thefractional transmission system,the complete flow was introduced to achieve power frequency grid fault ride...
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Number of views:2471 Amount of downloads:10269