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WU Zuoping，WANG Hongyan，ZHANG Qianfu，XIE Qing
Abstract：Electricity theft by users is the main cause of non-technical loss of electric energy in power grids，which causes huge economic losses and resource wastage to the power system. Compared with a large number ofusers' normal electricity samples，electricity theft users belong to a minority class of samples，...
更多Number of views：3680 Amount of downloads：14646
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HU Junze，YANG Genghuang，GENG Liqing，LIU Xinyu
Abstract：To address the issues of low accuracy and precision in transformer fault diagnosis，a transformerfault diagnosis method based on an improved particle swarm optimization-long short-term memory（IPSO-LSTM）network was proposed，integrating data feature selection and an improved particle swarm optimization algorit...
更多Number of views：2206 Amount of downloads：14602
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LIU Tong，YIN Zhonggang，BAI Cong，YUAN Dongsheng
Abstract: In order to improve the position sensorless control performance of permanent magnet synchronouslinear motor（PMSLM），a position sensorless control method based on disturbance compensated flux observer（DCFO）was studied. This method treats the notch filter as a disturbance observer and combines it with a feedb...
更多Number of views：3607 Amount of downloads：14596
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LIU Kai，LI Gang，WANG Xin
Abstract: According to the 90 s regular breaking and 15 s emergency breaking requirement for 60 MW axialcompressor used in some large scientific facility，a control strategy of electric hybrid breaking in the convertor wasdesigned. The hybrid braking control strategy was analyzed and calculated，and the optimal brakin...
更多Number of views：3002 Amount of downloads：14587
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XU Hai，MI Yanqing，WANG Yanyang，XU Zhipeng
Abstract：Permanent magnet synchronous motor（PMSM）has the advantages of fast dynamic response，highpower density，and high torque at low speed，but the temperature variation and complex working conditions willcause the variation of PMSM parameters，thus affect motor performance and reduce the output efficiency. Toaddress...
更多Number of views：3471 Amount of downloads：14466
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LIU Xin，WEI Lixin，ZHANG Feng
Abstract：In addressing the issue of the electrical drive system of oil drilling rigs encountering instability inactuator output due to interference from multi-source random noise，a novel approach was proposed. The Fractaltheory was utilized to isolate random noise in the drilling rig electrical control system. The p...
更多Number of views：2458 Amount of downloads：14441
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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...
更多Number of views：2309 Amount of downloads：14343
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YUE Xuelei，WANG Lei，TIAN Di，XU Kelei
Abstract: Permanent magnet synchronous motor（PMSM）has become the development direction of the newgeneration of rail transit traction system due to its characteristics of high efficiency and high power density. Amongthem，the research on the identification method of the initial position and frequency of the motor roto...
更多Number of views：3305 Amount of downloads：14188
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LIANG Hong，QIAN Renjun，CHENG Yongjun，HU Jiangyu，ZHANG Man
Abstract：As a kind of winch driven by motor，electric winch has more excellent performance of cable control.However，in the process of retracting and releasing the cable，the drum inertia of the electric winch will change with the change of the cable stock. This unknown inertia change will lead to mismatching of motor ...
更多Number of views：1677 Amount of downloads：14158
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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...
更多Number of views：3337 Amount of downloads：14072
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SHEN Zhangliang，CHEN Yini，LI Haomin，LIU Zihao，MA Hongzhong，GE Xuanhao
Abstract：A fault diagnosis model for isolation switches based on Markov transition field（MTF），catch fishoptimization algorithm（CFOA）improved pyramid vision transformer（PVT）was proposed to address theproblems of complex fault situations，strong noise in signal extraction，and insufficient feature extraction. Firstly，th...
更多Number of views：3351 Amount of downloads：14017
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KONG Fanting，CHEN Jian，DI Meixian，FU Baoxin，WANG Jianquan
Abstract: Electric power system is becoming more and more power electronization with each passing day，additional losses of the power grid caused by the power quality problem is becoming more and more serious witheach passing day. Solving the power quality problem has become the new way to help the power grid to save...
更多Number of views：3881 Amount of downloads：14015
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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...
更多Number of views：3162 Amount of downloads：14012
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YANGYifan，YIN Han，LU Zhiye，YU Xueying
Abstract: In order to solve the problems of large volume and short service life of the traditional electrolyticcapacitor frequency converter，the thin film capacitor was used to replace the electrolytic capacitor to constitute theAC-DC-AC frequency converter without electrolytic capacitor. Aiming at the problem of bu...
更多Number of views：3380 Amount of downloads：13995
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CHEN Weikang，WANG Haixin，ZHANG Zhiyong，CHEN Zhenyu，SHEN Jie
Abstract：Flux-weakening control technology can effectively broaden the speed range of the permanentmagnet synchronous machine（PMSM），therefore，it is of great significance to the research on the flux-weakening control of permanent magnet synchronous machine. Most of flux-weakening modified the flux-weakening current c...
更多Number of views：3486 Amount of downloads：13849
