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SUN Xiangfei,LI Ping,DA Guangjun,DOU Xiaochang
Abstract:Due to the large rotational inertia of synchronous machines,frequency changes caused by faults areminimal. In contrast,new energy systems have smaller rotational inertia,which can result in more significantfrequency variations during faults. These larger frequency fluctuations inevitably lead to changes in ...
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Number of views:820 Amount of downloads:5259
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DING Jinjin,PENG Bo,ZHANG Feng,MAO Xun
Abstract:To address the large inrush current during the switching of a virtual synchronous generator(VSG)from off-grid to grid-connected,and the stability issues of traditional pre-synchronization schemes,a controlmethod for the phase-locked loop(PLL)pre-synchronization unit to be cut off in non-grid-connected time ...
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Number of views:809 Amount of downloads:5135
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CHEN Baixu,LI Xiaohua,CAI Zexiang,HU Ming,LIANG Xuran,YANG Bin
Abstract:As the new power system evolves towards a high proportion of renewable energy access andmultiple interactions,edge computing,as the core technology to support the intelligent upgrade of power system,is facing severe challenges of large-scale equipment access and complexity of power business. Aiming at the p...
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Number of views:802 Amount of downloads:5925
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FENG Yuzhe,SHENG Long,LUO Tongling,WANG Xin
Abstract:The inter-turn short circuit fault and thermal imbalance fault of the generator rotor winding will bothcause a positive correlation phenomenon between rotor vibration and excitation current. In order to improve theefficiency and accuracy of fault diagnosis,the research was conducted on the characteristics o...
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Number of views:770 Amount of downloads:6211
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ZHANG Hengrong,ZHENG Youzhuo,DUAN Liwei,LONG Zhi,WENG Di
Abstract:Aiming at the problem of peak-valley difference increase and voltage violation caused by large-scalefluctuation of network power in multi-time sections under high-proportion photovoltaic distribution network,apeak-shaving optimization strategy based on feeder load power control and multi-type resources was ...
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Number of views:735 Amount of downloads:4748
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HUO Tingting,JIA Zhilong,YAN Yong,ZHANG Qing
Abstract:To enhance the trajectory tracking control stability of driverless vehicles under real-world noiseinterference,a vehicle trajectory tracking controller based on model predictive control(MPC)integrated with theextended Kalman filter algorithm(EKF-MPC)was constructed. Firstly,a vehicle dynamics model was esta...
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Number of views:670 Amount of downloads:3987
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MAMengyuan,WANG Yang,WANG Lianjie,LIU Jie,ZHANG Lei
Abstract:In the context of China′s "carbon peaking and carbon neutrality goals",the electrical equipmentmanufacturing industry urgently needs a low-carbon transition. As a key component of electrical equipment,variable-frequency drive(VFD)devices offer significant advantages such as precise regulation,notable energy...
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Number of views:667 Amount of downloads:4024
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NI Jiahua,ZHAO Zhixing,ZHU Yinxiao,MUHAMMAD AJMALAidha,YANG Yongheng
Abstract:Regarding the practical operation of photovoltaic(PV)systems,the photo-electron conversionefficiency and degradation rate of PV modules are easily affected by several factors,e. g. ,irradiance,humidity,and temperature. Subsequently,an efficient framework for assessing power degradation became the cornerston...
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Number of views:649 Amount of downloads:4279
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WANG Jin,GE Qiongxuan,ZHAO Lu,ZENG Dihui
Abstract:The combined propulsion,levitation,and guidance superconducting electrodynamic suspensionmaglev train is capable of achieving electromagnetic forces generated by ground coils,which is of significantimportance for reducing construction costs and shortening development cycles. A mathematical model of themagle...
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Number of views:605 Amount of downloads:6572
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LI Longxiao,ZHAO Shiwei
Abstract:Phase-shift modulation,as a conventional modulation strategy for dual active bridge(DAB)converters,has the drawback of excessive inductor current peak-to-peak value when the voltages on both sides aremismatched. Therefore,based on an improved dual phase shift(IDPS)modulation combined with duty cyclemodulat...
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Number of views:278 Amount of downloads:1289
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WANG Yuwei,WANG Jing,WANG Yong,CHU Yunfei,LI Boqiang,LI Shuguang
Abstract:Aiming at the voltage fluctuation problem in the integrated electricity-gas system(IEGS)andconsidering the reactive power support capability of new energy units and coupling elements,a reactive power andvoltage optimization control method for the IEGS was proposed. First,based on the analysis of the compos...
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Number of views:264 Amount of downloads:990
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ZHOU Jianhua,ZHANG Ruining,TAO Kai,XU Junjun
Abstract:The risk of voltage violations and fluctuations has surged due to the high penetration of distributedrenewable energy and the large-scale application of new power electronic devices. Therefore,it is essential tooptimize the control system of reactive voltage through intelligent methods for the reliability ...
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Number of views:263 Amount of downloads:1166
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WANG Jin,GE Qiongxuan,ZHAO Lu
Abstract:The power system of the superconducting electrodynamic suspension maglev train adopts a longstator linear synchronous motor. Its operational stability is susceptible to disturbances such as uneven tracks,curve passage,and crosswinds,which result in alterations to the train's attitude. The air gap betwe...
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Number of views:249 Amount of downloads:1270
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GAO Qiangwei,ZHUO Chengcheng,LIU Yichao,YUE Yang
Abstract:To accurately assess the power quality status of a system,a comprehensive power quality evaluationmethod based on a combined weighting approach and the normal cloud model was proposed. Initially,acomprehensive evaluation framework for power quality was established,encompassing three key dimensions:amplitud...
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Number of views:246 Amount of downloads:854
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HE Weidong,CHENG Yan,WANG Qingfeng,XU Lie,ZHOU Yiming
Abstract:Rectifiers with small DC-link capacitors feature the advantages of low cost,high power density,andsmall volume,showing significant application potential in aerospace,marine engineering,and other fields.However,small DC-link capacitors provide weak DC voltage support,and sudden load changes can easily induc...
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Number of views:232 Amount of downloads:998