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XIONG Wei，CHEN Long，LÜ Shunli，GUO Zhenyu，LU Xin
Abstract：To address the complexities of transformer condition assessment indicators and the overreliance onexpert judgment in the evaluation process，a novel method for fuzzy comprehensive assessment of transformercondition was introduced，which is based on gaming theory and an improved version of the D-S evidence the...
更多Number of views：2654 Amount of downloads：8611
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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：2654 Amount of downloads：9727
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GONG Xuanlin，WANG Junyan
Abstract: In view of the problem that the commutation error of brushless DC motor is difficult to accuratelymeasure during variable speed operation，the relationship between the integral of line voltage difference and themotor rotation angle was analyzed，and it was proved that the integral value of the line voltage d...
更多Number of views：2653 Amount of downloads：4346
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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：2646 Amount of downloads：10158
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OU Zhixin，LI Jixia，DENG Chunlan
Abstract: The reliability and stability of electric energy transmission in the power grid are the guarantee ofdriving safety，due to the impact of external interference fluctuations and current arcs on the power grid structure，its parameter acquisition and dynamic modeling become difficult. Firstly，the characteristic...
更多Number of views：2632 Amount of downloads：9632
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ZHANG Rui，XIAYan，HUANG Guiping，CHEN Renzhao，YANG Yili
Abstract：Aiming at the poor robustness and system vibration problem of asynchronous motors under thetraditional sliding mode control，a variability coefficient power exponent reaching law（VCPERL）was proposed todynamically change the control coefficients according to the position of the sliding mode surface，and the sl...
更多Number of views：2629 Amount of downloads：7143
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FANG Lei，CHU Chengbo，ZHU Xiaojing，HE Yinghong，YANG Huimin
Abstract：In order to address the issue of large output voltage variation from self-powered current transformerin smart measurement switch，ultra wide input voltage range post-stage DC-DC module is required to generatestable system voltage rails. A ultra wide input DC-DC module based on constant on-time control and as...
更多Number of views：2627 Amount of downloads：5749
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SHI Dongsheng，WANG Tao，QIU Shuming，WANG Wenguang，WANG Yubo
Abstract: Application of TAC1 series high performance high power inverter products of Tianjin ElectricResearch Institute on 20-high reversible mill was introduced.The common DC bus multi drive system consists ofactive infeed converter and inverter. Firstly，the device selection of the system and the calculation of tra...
更多Number of views：2627 Amount of downloads：9671
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LIU Xinglong，XIE Yihan，YANG Ziyang，ZHANG Zhilong，YI Hao，ZHUO Fang
Abstract：Active power filters（APF）are widely used for dynamic compensation of power system harmonic.However，under weak grid conditions，the interaction between APF，nonlinear loads and grid impedance can easily lead to the stability issue of harmonic oscillation around the compensation frequency，resulting in the fault...
更多Number of views：2609 Amount of downloads：5955
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LU Xihao，QIAO Mingzhong，ZHANG Chi
Abstract: In view of the electromagnetic vibration and noise analysis of permanent magnet motor with Halbachstructure at rated power，the analytical expression of radial force wave of permanent magnet motor was established，and two kinds of main force waves which cause vibration and noise were analyzed. The main noise...
更多Number of views：2604 Amount of downloads：5207
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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：2589 Amount of downloads：10718
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LI Wei，LUO Cheng，YANG Kai，WANG Xuming，QIU Lingfeng，HUANG Yuhao
Abstract：When the permanent magnet assisted synchronous reluctance motor（PMaSynRM）runs at highspeed with flux-weakening control，the DC bus voltage utilization is not high，and the efficiency and torque output capacity of the motor are low. Therefore，a flux-weakening control strategy of permanent magnet assistedsynchr...
更多Number of views：2583 Amount of downloads：7178
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JIAO Xiaofeng，WEI Chao，HU Hongbin，FAN Zeguo，ZHANG Lihui
Abstract: With the acceleration of my country' s power spot market construction process，in order to solve theproblem of heat-electricity mismatch in the northern region，two different day-ahead scheduling strategies of aflexible co-generation plant based on the participation of cogeneration units in the day-ahead...
更多Number of views：2583 Amount of downloads：5814
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MA Bingtai，LIU Haitao，HAO Sipeng，LU heng，ZHANG Chengyu
Abstract: In photovoltaic and hybrid energy storage system，variational mode decomposition（VMD）iscommonly used to realize the distribution of system residual power，but the number of decomposed modes andsecondary penalty factor value affect the error of power reconstruction directly，and the inertia weight error ofcomm...
更多Number of views：2582 Amount of downloads：6539
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YU Hui，ZHOU Shigui ，MA Feihong，ZHANG Kecheng
Abstract：Permanent magnet synchronous machines（PMSM）has serious chattering problem when traditionalsliding mode observer（SMO）is applied to low-speed operation with fixed sliding mode gain. To solve thisproblem，a full-order sliding mode observer（FSMO）with fuzzy adaptive adjustment of sliding mode gain wasproposed，whi...
更多Number of views：2574 Amount of downloads：4821
