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MA Xiaoliang
Abstract: Several problems and their solutions of high-performance inverter-fed motor drive systems wereintroduced: the features and some matters needing attention of two- closed-loop systems; how to improve speedfollowing performance during starting and breaking and to improve anti-disturb ability by means of predicti...
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Number of views:12028 Amount of downloads:15685
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ZHAI Bingxu,ZHAO Yansong,GUO Yuchen,LI Yuanzhuo,JIANG Zhilin,XIAO Qian
Abstract:Under the carbon peaking and carbon neutrality goals,the high integration of new energy sourceslike photovoltaics(PV)into the power system makes it difficult for traditional dispatching schemes to effectivelyhandle their randomness and volatility in output. PV curtailment occurs frequently and local counter...
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Number of views:26 Amount of downloads:38
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SU Qili,LIU Jiayi,RUAN Peng,ZHANG Liuli,ZHAO Yayi,XIAO Qian
Abstract:With the large-scale access of a high proportion of new energy,the frequency and voltage stabilityof the distribution network has significantly decreased. Therefore,an optimal configuration method for energystorage in the distribution network considering the improvement of frequency-voltage stability was pr...
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Number of views:26 Amount of downloads:40
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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:25 Amount of downloads:39
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ZHANG Yunquan,CHEN Xuanang,GUO Xiaorui,WEN An,YE Run
Abstract:To address issues like overcurrent,power oscillations,and insufficient dynamic response intraditional virtual synchronous generator(VSG)control during grid voltage sags,an improved VSG- low voltageride through(LVRT)mode-switching control strategy for grid-forming inverters was proposed. The strategydynamica...
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Number of views:26 Amount of downloads:44
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XU Bin,CUI Wenqing,CAO Huanxi,CHEN Peiyu,LI Qian,JIN Yu
Abstract:Driven by the dual-carbon goals,to effectively reduce the carbon emissions of flexible DCinterconnected microgrids cluster and enhance the flexibility of system control,a low-carbon control strategy wasproposed. Firstly,a topology of flexible DC interconnected microgrids cluster was proposed,and the carbone...
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Number of views:27 Amount of downloads:31
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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:20 Amount of downloads:38
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YAN Wei,MENG Jianhong,WANG Haochong,WANG Wei
Abstract:In low-temperature environments,the electrochemical reaction kinetics of lithium-ion batteriesbecome hindered,leading to accelerated capacity decay and increased internal resistance,which severely impactstheir lifespan and safety. To achieve non-destructive estimation of internal aging,a battery internal ag...
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Number of views:24 Amount of downloads:36
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HU Xiangzheng,GAN Pei,LI Ke,WU Wenqi,GUO Hanting,HUANG Xianjin
Abstract:The insulated gate bipolar transistor(IGBT),as the core device of power electronics system,iswidely used in industrial control,transportation and new energy power generation due to its high efficiency andhigh switching frequency. However,the internal bonding wire is vulnerable to thermal stress and current ...
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Number of views:7 Amount of downloads:8
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WU Zhenyu,LIU Yonghang,LIU Yuansen,ZHANG Yihan,ZHENG Yongle,ZU Wenjing
Abstract:With the proposal of the“dual carbon”goals and the development of new power systems,theproportion of renewable energy sources such as wind and solar power continues to increase,and the load volumegrows with enhanced volatility,posing higher demands on the expansion of transmission lines due to uncertainties...
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Number of views:7 Amount of downloads:7
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WANG Mingshen,PAN Yi,MIAO Huiyu,HAN Huachun,ZENG Fei,YUAN Xiaodong
Abstract:In response to the problems of insufficient consideration of charging pile resource constraints,lowpracticality of time-domain discrete models,and inadequate description of peak shaving capabilities in the currentoptimal scheduling of electric vehicles at charging stations,an optimal scheduling and peak sha...
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Number of views:5 Amount of downloads:4
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YANG He,CHEN Zhaoyu,ZHANG Jinhua,XU Jing,WANG Jingpeng,ZHU Shichang
Abstract:In response to the issues of large volume,high cost,and complex control algorithms associated withvoltage regulation equipment in new energy distributed power distribution areas,a two-stage voltage regulationcircuit topology based on a DC-link capacitor-free structure was proposed. Based on this topology,a ...
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Number of views:758 Amount of downloads:4034
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YAN Yingshi,QIU Dongyuan
Abstract:Aiming at the interconnections requirements of power frequency(PF),low frequency(LF)anddirect current(DC)brought by the offshore wind power,a hybrid multi-frequency converter was designed basedon the nine-bridge-arm modular multilevel converter(9A-MMC),in which the diode-clamp sub-module wasselected for upp...
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Number of views:937 Amount of downloads:4374
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ZHANG Jianwen,MA Haixiao,JIAN Jiahong,LIU Yueneng
Abstract:To eliminate the leakage current of single-phase non-isolated photovoltaic inverter,a six-switchphotovoltaic inverter topology with low leakage current was proposed. The topology consists of a voltage multipliercircuit,a common ground three-level inverter circuit and a LC output filter circuit. The combinat...
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Number of views:789 Amount of downloads:4840
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CUI Yulu,ZHANG Zhiguo,YANG Gang,GAO Yipeng,ZHAO Jiantao
Abstract:In response to the "double carbon" strategy,the state has made great efforts to develop new energy.As an important carrier of distributed new energy,the DC building microgrid system has attracted extensiveattention. In the DC building microgrid system,as the core link of voltage and power conversion,DC conv...
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Number of views:907 Amount of downloads:3480