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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:8652 Amount of downloads:5028
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CHEN Shaoxiong,ZHANG Penghe,SONG Runan,XUE Yang,CHEN Ganchao
Abstract:Power safety is a critical issue related to the reliable supply of energy and the safety of people's livesand property. In recent years,electrical fire incidents have been frequent in China,and low-voltage AC fault arcdiagnosis,especially for series fault arcs,is difficult to apply to the complex domest...
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Number of views:109 Amount of downloads:107
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YANG Xuan,LI Rui,CAO Xiaoqing,LI Lin,GUO Ran
Abstract:During the transition of a microgrid inverter from grid-connected mode to islanded mode and viceversa,pre-synchronization measures are necessary under the virtual synchronous generator (VSG) controlarchitecture to prevent voltage waveform distortion and current surges. A VSG-based parameter-optimized presyn...
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Number of views:120 Amount of downloads:100
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YANG Yong,ZHANG Xujun,LIU Wenfei,NIU Haoming,ZHAO Jinguo,YANG Rui
Abstract:The integration of new energy units on a large scale has introduced numerous adverse effects on thestability of system operation. Analysis of mechanisms and identification of impedance characteristics in gridconnected inverter(GCI)for new energy units are key to effectively addressing these issues. Therefor...
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Number of views:96 Amount of downloads:115
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LI Zewen,FAN Yuanliang,CHEN Weiming,WANG Shaopeng,LIN Jianli,LI Lingfei
Abstract:In the distribution network of the new power system,due to the access of a large number of newenergy power generation devices,the power supply side output of the distribution network becomes unstable andloses control ability. In order to deal with a series of problems such as the difficulty of photovoltaic ...
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Number of views:96 Amount of downloads:106
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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:83 Amount of downloads:97
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CHEN Zhong,WU Yongkang,JIANG Yang,WU Fuchao
Abstract:An optimization control strategy based BPA for doubly fed wind turbines under asymmetric faultridethrough was proposed to address the issue of low accuracy of control strategies under asymmetric faults,inorder to obtain more accurate fault control model parameters for doubly fed wind turbines under asymmetr...
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Number of views:88 Amount of downloads:95
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A Sileng,WANG Peng,YAN Xiaomeng,MIAO Zhu,HOU Jinxiu,ZHAO Jiadong
Abstract:As an important feature of the future power system,the penetration of a high proportion ofrenewable energy sources significantly enhances the uncertainty of power system operation. The probabilistic loadflow calculation,compared with the conventional tidal current calculation,can fully consider the influenc...
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Number of views:79 Amount of downloads:94
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ZHAN Yubing,TAO Deshun,WANG Changxing,CHEN Liangliang,LIU Hongpeng
Abstract:In order to cope with the impact of large-scale access to new energy sources such as wind power,photovoltaic and electric vehicles on the spatial characteristics of the power grid,a novel dynamic probabilistictrend analysis method was proposed. Firstly,the probability distribution model of wind and light po...
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Number of views:64 Amount of downloads:59
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ZHANG Jie,CHEN Qiang,LUO Yuanfeng,QIN Jiming,WEI Juren,WU Beixing
Abstract:Power cable is an important carrier of power transmission. To solve the problems of low accuracyand large computation in voicing diagnosis with traditional convolutional neural network model,a novel cable faultdiagnosis method based on multiple voicing features and lightweight convolutional neural network w...
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Number of views:73 Amount of downloads:52
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DANG Yihan,XU Chuanfang,WANG Shaozu
Abstract:Usually,the DC side of the traction rectifier requires a series LC resonant circuit to filter out thepulsating component of 2 times the grid frequency. When the resonant inductor on the DC side had a short-circuitfault,the pulsating component would be transferred to the motor side,the problems such as torque...
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Number of views:67 Amount of downloads:100
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PEI Zhiqiang
Abstract:Aiming at the traditional mine hoist rocker arm bearing fault diagnosis technology which usuallyonly utilizes a certain specific geometric structure of the vibration dataset and fails to obtain the optimal similaritygraph structure,an intelligent diagnosis method for bearing faults based on adaptive graph e...
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Number of views:61 Amount of downloads:55
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LUO Huanliang,WANG Zaixiang,LI Yesong
Abstract:Aimed at the issues of deadbeat direct torque and flux control strategy(DB-DTFC)such as relyingon the accurate motor model,high computational load,and coupling between torque and flux,a simplified strategy of DB-DTFC for permanent magnet synchronous motor which based on flux planning was proposed. Firstly,p...
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Number of views:311 Amount of downloads:252
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SHI Mingming,LIU Ruihuang,WANG Xinda,WANG Jiaming,ZHANG Chenyu
Abstract:To address the parameter dependency issues present in traditional model predictive controlalgorithms,a novel model predictive control method that employed an ultra-local model and updated its parameters in real-time using the recursive least squares (RLS)method was proposed. This approach eliminated the dep...
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Number of views:309 Amount of downloads:212
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LIU Fusuo,DING Rui,WANG Yu,CHENG Shuo,WANG Qi,HUANG Xifang
Abstract:In order to solve the DC over-voltage problem caused by surplus power when short circuit faultoccurs in the recipient grid of offshore wind power via voltage source converter high voltage direct currenttransmission(VSC-HVDC)delivery system,a joint fault ride-through strategy based on surplus power allocatio...
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Number of views:295 Amount of downloads:185