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DING Qiang,JIANG Yingxu,NI Tuocheng
Abstract: Firstly,the radial force mathematical model of central winding bearingless slice permanent magnetmotors was built. Subsequently,parameters tuning theory of displacement loop PID controller for bearingless motor suspension system was studied,and its inherent drawbacks of PID controller when used for bearing...
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Number of views:3467 Amount of downloads:3092
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CHENG Jin,PAN Zhixuan,CHENG Haifeng,DAI Mingli,HUANG Minli
Abstract: With the continuous improvement of the penetration rate of wind turbines,in order to suppress thevoltage/frequency fluctuations of the doubly-fed induction generators(DFIGs)after grid-connected due to their own active power output fluctuations,aDFIGinertia support and primary frequencymodulation control ba...
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Number of views:3455 Amount of downloads:4026
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LI Mingyang,NIU Pingjuan,LI Yuhong,LI Ying,SUI Yu
Abstract: The offset characteristics of transmitting and receiving coils manufactured by different wirelesselectric vehicle manufacturers are a critical issue to ensure the interconnection of domestic and international vehiclecharging. The 3.7 kW wireless energy transmission system was modeled and the SS-type topolo...
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Number of views:3431 Amount of downloads:3135
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SHEN Jiexin,LIU Lei,HE Dandong,LIU Zhenguo,CHU Houguang,MA Hanchao
Abstract: When the current method is used to control the DC transformer of the DC-DC converter,thecontrol efficiency is low,the immunity is poor,and the loss detection error is large. In order to solve the existingproblems,a DC transformer control method based on the SRDAB DC-DC converter was proposed. By analyzingt...
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Number of views:3367 Amount of downloads:3048
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ZHANG Dewang,CHEN Zhigeng,ZHANG Zhichao,ZHOU Yu
Abstract: Traditional point prediction is difficult to analyze the randomness and uncertainty of wind powerinadequately. Aiming at the shortcomings of point prediction,an interval prediction model based on improvedwhale optimization algorithm and fast learning network(IWOA-FLN)was proposed. Firstly,the convergencesp...
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Number of views:3362 Amount of downloads:2988
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ZHENG Xiaoyong,DENG Jinxiang,HU Ren,WANG Hong
Abstract: Brushless DC motor has been widely used in the market because of its long life,high reliability andhigh torque. The sensorless control method can avoid a series of problems caused by the position sensor and furtherexpand the application of the brushless DC motor. Compared with the traditional sensorless co...
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Number of views:3342 Amount of downloads:4177
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TIAN Kai,YU Zhibin,YUAN Yuan,CHU Zilin,SUN Chuanjie,YANG Jingran
Abstract: A fine dead-time compensation method based on the medium voltage three-level IGCT outputfiltering topology was proposed to realize the real-time calculation and compensation of the dead-time effect of theinverter output. Based on the topology of the output filter,the transfer function was established,and t...
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Number of views:3342 Amount of downloads:2935
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LI Chasen,WANG Daihua,ZHANG Qiang,TANG Hong
Abstract: The crankshaft is an important component that determines the life of an internal combustion engine.It bears compound alternating stress for a long time,so it is easy to produce fatigue failure. Aiming at the shortageof crankshaft dynamic stress testing methods,a stress testing system with long endurance an...
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Number of views:3331 Amount of downloads:2528
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GUO Leilei,ZHU Linqiang,CAO Lingzhi,LI Yanyan,WANG Pengshuai
Abstract: The accurate estimation of rotor angle is an important prerequisite for realizing speed sensorless highperformance vector control of permanent magnet synchronous wind generator. In the speed sensorless control ofpermanent magnet synchronous wind generator based on disturbance observer,the traditional angle...
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Number of views:3321 Amount of downloads:4059
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LI Zhenbo,DAI Linwang,LI Shaolin,ZHANG Xueguang
Abstract: At present the mainstream of doubly-fed induction generators(DFIG)control mode is the currentsource type vector control mode,which is lack of independent of frequency and voltage support ability,but the voltage source type virtual synchronous machine control method can solve the shortcomings. In order to m...
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Number of views:3317 Amount of downloads:4481
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WANG Peng,LI Zhongzhao,GONG Zhaowei,ZHANG Ningchao
Abstract: In order to solve the problem of coupling mechanism offset in wireless power transfer system,theS-S and LCC-LCC dual topological wireless power transfer system based on parameter optimization was proposed.Firstly,the output characteristics of S-S and LCC-LCC topological energy transmission channels were an...
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Number of views:3301 Amount of downloads:2806
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WU Weikun,GONG Shiying,ZHENG Yaohua,SHAN Chao,DONG Chuanyou
Abstract: In order to intelligently identify crosslinked polyethylene(XLPE)cable faults in high noiseenvironment,a method of XLPE cable fault identification based on deep residual shrinkage network was proposed.In this method,the soft threshold was embedded into the deep structure of the network as a nonlineartransf...
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Number of views:3296 Amount of downloads:2867
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WEI Wei,GE Qiongxuan,LI Yaohua,ZHAO Lu,ZHANG Bo
Abstract: The integrated gate commutated thyristor(IGCT)is an important element for efficient and reliableoperation of high power traction converters. The stability of high power converter system is significantly affected bythe voltage and current dynamic characteristics of the IGCT device during the turn-on and tur...
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Number of views:3295 Amount of downloads:2751
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ZHANG Ao,DAI Linwang,MA Zhengyang,LI Shaolin,ZHANG Xueguang
Abstract: Doubly-fed wind turbine is easy to produce sub-synchronous oscillation in series compensation grid.Using virtual synchronous control structure to improve inertia and damping for grid may also lead to subsynchronous oscillation risk. In view of the causes of sub-synchronous oscillation,firstly,the double-fe...
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Number of views:3291 Amount of downloads:4283
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ZHANG Jinbo,YIN Yuan,SHI Jian,LIN Shaoyuan,YAN Lei,HUANG Xiaoyu, LIN Yubin,YANG Dishan,CHENG Nuo
Abstract: In order to reduce the measurement error of transmission line crossing distance and reduce theoccurrence rate of transmission line accidents,a method of transmission line crossing distance measurement basedon grid information model was proposed. The platform of crossing distance measurement including data ...
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Number of views:3290 Amount of downloads:2717