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JIA Junqing,LÜ Chao,LIU Dinghua,XU Hao
Abstract: With the rapid development of artificial intelligence algorithms,convolutional neural networks withfewer layers have been used in distribution network overvoltage recognition. The deep-level network has a higherrecognition rate,but requires a large number of data samples. At present,the amount of data in t...
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Number of views:3586 Amount of downloads:1590
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LUO Ke,WU Shuanglong,REN Chao,LIU Yuan
Abstract: Aiming at the electromagnetic noise problem of the permanent magnet synchronous motor for electric vehicle,the causes of noise were analyzed from the perspective of current harmonic and electromagnetic force. It has shown that current harmonics control is an effective method for motor electromagnetic noise...
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Number of views:3582 Amount of downloads:1832
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LI Xuhui,XIE Baihuang,HUANG Xiaoyong,XUYan
Abstract: The collector line short-circuit fault is one of the most common faults for the grid-connected doublyfed wind farms. Because the introduction of the crowbar discharge resistor,after the unsymmetrical faults of the collector line,the positive and negative sequence impedances of DFIG will produce the differe...
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Number of views:3582 Amount of downloads:1473
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YANG Zhaowen,YANG Guochao,LIU Jianjun,WANG Hongwei,BAI Xinyu
Abstract: A second order filtering power dividing frequency control strategy based on virtual impedance wasproposed. The different frequency power compensation among different storage units by building invisible passfilters was achieved. The invisible pass filters including high pass filter and low pass filters were...
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Number of views:3576 Amount of downloads:1673
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CHEN Hu,WANG Yangyang,PAN Yuedou
Abstract: In order to overcome the drawback of direct torque control of induction motor which has largetorque ripples at low speed,a generalized predictive control method was proposed and be used in the direct torque control of induction motor. The method was directly used in speed control,and didn' t depend on ...
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Number of views:3563 Amount of downloads:1497
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LI Dexiang,LU Jiayu,GE Wenqing,LI Bo,TAN Cao
Abstract: Aiming at the problems of high control performance and long design cycle of electromagnetic linearactuator control parameters,a multi-objective optimization design method of control parameters was proposed.Based on electromagnetic linear actuator system,a robust controller was designed. The controller para...
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Number of views:3556 Amount of downloads:1491
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REN Zhimin,LIN Yuanxiang,LIU Yang
Abstract: A magnetic actuation system of an interventional surgical robot was studied,which is a new type ofelectromagnetic driving device that uses a mobile coil with a ferrous core to realize the magnetic driving in largespace. By using the method of maximizing the magnetic field in the target region,the coil mode...
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Number of views:3539 Amount of downloads:1409
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ZHOU Liying,XIA Changhao
Abstract: Three-phase bridge converters(TPBC)are widely used in low-voltage power distribution networksto compensate the negative-sequence current and the reactive current. Because of the relatively high costs,improving the compensation effect of limited capacity equipment has high economic value and research signif...
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Number of views:3539 Amount of downloads:1576
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XU Zhenyu,LI Shuai,CHEN Yong,WANG Wenna
Abstract: Electromagnetic radiation affects the development of the wireless charging technologies for electricvehicles.Amethod for reducing the radiation was proposed during the procedure of the wireless charging compared to the existing schemes from the viewpoint of hardware design,software implementation,simulatio...
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Number of views:3533 Amount of downloads:1611
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WANG Shanshan,NIU Ke,LI Hui
Abstract: In order to reduce the high cost of sampling circuits,simplify commutation procedure and improvethe conversion efficiency of the indirect matrix converter,a zero current commutation model predictive control(ZCC-MPC)strategy with the input voltage observation was proposed. The input voltage observer was des...
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Number of views:3529 Amount of downloads:1508
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LIU Jinchao,DUAN Hongmin,WU Letao,LIU Ligang,XU Chao
Abstract: Aiming at the phenomenon of pressure relief and deflagration caused by the faults of oil-immersedtransformer,a logic was proposed that the transformer can keep self-maintained running when faults occurred,and according to the logic,a scheme of oil circuit equipment was designed. The above logic and the sch...
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Number of views:3527 Amount of downloads:1389
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FENG Qiao,WANG Na
Abstract: In order to improve the control performance of permanent magnet synchronous motor(PMSM)servosystem,weaken the influence of uncertainty in the system,and solve the chattering problem in traditional SMCtechnology,a dynamic sliding mode control(DSMC)method was proposed. Firstly,based on the PMSMmathematical m...
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Number of views:3525 Amount of downloads:1750
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LI Xuan,DONG Yongle,HAI Hongye,JIN Zhao
Abstract: Under the background of smart grid,higher requirements are put forward for the management level of distribution network,and the traditional static model can not meet the application requirements of refined line loss and real-time scheduling. Based on low-voltage power grid topology identification and broad...
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Number of views:3524 Amount of downloads:1404
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LIU Chunhui,ZHANG Zheng,FAN Hongzhen,MOU Huilong,HUANG Cunkuan,YUAN Fang
Abstract: Multi-energy complementary generation operation had become a new direction to improve theefficiency of new energy utilization,and it is particularly important to analyze the characteristics of multi-energycomplementary generation. According to the operation characteristics of multi-energy complementary gen...
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Number of views:3523 Amount of downloads:1327
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LIU Tao,CAI Xu,SUN Guoqi,WEI Xiaobin,CAO Yunfeng,ZHANG Lingyan
Abstract: As traditional condenser is replaced by static var generator(SVG),the dynamic reactive powercompensation can be provided by SVG. However,compared with traditional condenser,SVG lacks rotational inertia.Traditional research of SVG mainly focused on reactive power compensation and fault ride-through,and ther...
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Number of views:3517 Amount of downloads:1756