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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:3014 Amount of downloads:1161
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MA Tao,XIAO Zhiyun,ZHANG Yonghong,DAI Zehui,WANG Zhiqiang
Abstract: In order to improve the reliability of LCL-filtered grid-connected three-phase inverter when using asliding mode controller,a novel sliding mode control strategy with less sensors in the abc natural frame was designed.Firstly,the sliding surface functions of phase a and phase b in the abc natural frame wer...
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Number of views:2968 Amount of downloads:1114
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LIU Dongchao,XIONG Muwen,GAO Sen,ZHAO Senlin,ZHU Herong,LI Haitao
Abstract: Different types of partial discharge (PD) in gas insulated switchgear (GIS) cause different damage toGIS insulation. Correctly identifying the type of partial discharge is very important to evaluate the insulation statusof GIS. In order to simplify the process of feature extraction and improve the recognit...
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Number of views:3211 Amount of downloads:1323
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SUN Lihua,ZHANG Lin,SUN Huiqin,GUO Yingjun,LI Zheng,GUO Tianliang
Abstract: The switched reluctance motor control system for electric vehicles includes motor drive and batterycharging circuit,which reduces system integration and power density. Based on the asymmetric half-bridge powerconverter of switched reluctance motor,an integrated power converter for electric vehicle was desi...
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Number of views:3265 Amount of downloads:1339
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HU Bo,YANG Chao,TIAN Xiaolei,LI Yunlu,YANG Junyou,CUI Jia
Abstract: When the internal parameters and topology of grid-connected power converter is unknown in somepractical applications,the existing frequency scanning based impedance modeling method can only maintain thedynamic equivalence at one operating point. To ensure the effectiveness of dynamic model in a wide operat...
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Number of views:3244 Amount of downloads:1337
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GAO Fengliang,HUANG Xiongfeng,FAN Hongxing,ZHANG Xuankun
Abstract: The failure rate of IGBT devices caused by excessively high temperature is as high as 55%.Improving the heat dissipation efficiency of the heat sink is the basis for ensuring the safe and reliable operation ofIGBT devices. Through theoretical analysis of IGBT module water cooling and heat dissipation,a tem...
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Number of views:3259 Amount of downloads:1367
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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:3174 Amount of downloads:1325
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ZHANG Lantao,XIONG Jun,NIU Xiaonan,HUANG Xiaoyu
Abstract: Aiming at the reliability problem of high-power IGBT modules under short circuit extreme operatingconditions,the power terminals imbalanced current of IGBT modules and the resulting dynamic junctiontemperature change were comprehensively analyzed. Firstly,the current sharing characteristics of parallel ter...
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Number of views:3323 Amount of downloads:1240
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ZHAO Jianyong,LI Han,WU Min,MA Runsheng,ZHAO Wenqiang,YU Ziwei
Abstract: Firstly,the significance of impedance modeling for new energy power generation equipment wasanalyzed,and the existing impedance modeling methods were explained. Aiming at the problems of low flexiblematching degree,single disturbance signal,fixed disturbance frequency and the inability of real-time measure...
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Number of views:3317 Amount of downloads:1494
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NIU Qian,ZHANG Dong,WANG Junlong
Abstract: Aiming at the problems of uneven power distribution and poor stability of grid AC/DC microgrid,anew adaptive coordinated control strategy was proposed to improve the stability and power distribution accuracy ofAC/DC microgrid(MGs)system.First,for converters connectingAC microgrids and DC microgrids,a contr...
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Number of views:3351 Amount of downloads:1296
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ZHOU Jiabin,CHEN Yufe,GU Zhaoliang,YONG Jun,ZHAO Wenbin,JIANG Pengliang
Abstract: The influence of magnetic bias current on the excitation characteristics of near-field transformers inthe DC grounding electrode from bipolar to unipolar earth mode was discussed. Based on the principle of field-circuit coupling,the DC magnetic bias co-simulation model of transformer was established and an...
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Number of views:3334 Amount of downloads:1370
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ZHANG Yang,GAO Tian,LIN Weixing
Abstract: Photovoltaic inverter,charging pile,energy storage converter,wind power converter and othercommon power electronic equipment are three-phase high frequency AC/DC/DC converter,which is widely used inindustrial and civil fields. Due to the fast switching capability of three-phase high frequency converter,its...
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Number of views:3504 Amount of downloads:1304
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MA Tianhui,MAWeiwei,GU Huaiguang,LIU Dong
Abstract: The modular multilevel converter(MMC)based high voltage direct current(HVDC)system(MMCHVDC)is an ideal solution for large-scale grid-connected and clustered offshore wind farms. But the interaction between the doubly fed induction generator(DFIG)and the MMC-HVDC system has a risk of subsynchronous oscillat...
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Number of views:3482 Amount of downloads:1360
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LU Hai,ZHANG Xudong,DANG Junpeng,GUO Li,LIU Rui
Abstract: A 2-stage three-level power conversion system(PCS)was studied,in which the 3-level T-type 3-leg3-phase 4-wire(3LT23L3P4W)topology was adopted as AC/DC part while the 3-level Buck/Boost topology wasutilized as DC/DC interface. To address the neutral point potential(NPP)unbalance of the PCS,firstly,with thea...
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Number of views:3107 Amount of downloads:1178
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FU Xuhui,FANG Chun'en,XUE Tao,HUANG Leichao,CHEN Junping
Abstract: In order to ensure that the thyristor valve body can be accurately conducted during the solid state switch switching,a solid state switch trigger control unit was designed. Firstly,the structure and working principle of the solid state switch and the structure and function of the trigger control unit were ...
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Number of views:3304 Amount of downloads:1315