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ZHAO Faping,SHE Yanjie,SUN Huanyu,BU Xiangzhou,BAI Tao
Abstract:A sliding mode linear self disturbance rejection control strategy was proposed to address the outputvoltage fluctuations caused by sudden load changes,changes in DC bus voltage,disturbance addition,and otherdisturbances in three-phase interleaved parallel DC-DC converters. Firstly,a mathematical model of th...
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Number of views:301 Amount of downloads:248
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DU Jifei,WANG Yang,WANG Li,LIU Haoruo,MU Yunfei,SUN Qiang
Abstract:The primary side feedback can stabilize the output voltage,and improve the service life of theequipment without using the secondary winding detection error signal. The topology of active filter and theimproved method of primary side feedback were adopted. The performance of active EMI filter topologies wasa...
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Number of views:354 Amount of downloads:276
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CUI Mengyu,YIN Qinglong,GUO Xudong,LÜ Tuo,HU Qifeng,LIU Zhengyan
Abstract:The VPX power standard is currently the most compatible military embedded computer standardinternationally,and its modules can stably power multiple different functional modules in the chassis. A VPXpower board based on VITA46 and VITA62 standards was designed. The design architecture,ideas,and functionsof ...
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Number of views:355 Amount of downloads:250
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XU Shizhou,CHANG Jinhai,FAN Jingsheng,JIA Xinxin
Abstract:A method for establishing edge triggered pulse control switch state time was proposed to address thedivergence of floating capacitor voltage and DC capacitor midpoint voltage in a 5-level active neutral point clamped(ANPC-5L)inverter using the space vector pulse width(SVPWM)algorithm in the g-h coordinate s...
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Number of views:390 Amount of downloads:312
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ZHANG Boyu,ZHANG Xiaoli,FENG Rui,ZHANG Zhaobo,CAI Siqi ,MA Xiaoxuan
Abstract:Based on the principle of magnetic coupling resonance technology,a bilateral LCC topologycompensation network parameter design method was adopted. Firstly,the mathematical model of the main circuitof the bilateral LCC topology was analyzed,and the inductance ratio of the coil self-inductance and the seriesc...
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Number of views:374 Amount of downloads:243
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LIU Hui,SU Jianhui,ZHANG Jian,LIU Shuo,SHI Yong,ZHANG Jie
Abstract:Wireless power transfer(WPT)load voltage,current and other state information need to be sent tothe original side for closed-loop control and monitoring processing,the secondary side to the original side of thecommunication is very important. Firstly,the topology and working principle of capacitive modulated...
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Number of views:519 Amount of downloads:320
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LI Ning,LIU Ming,ZHANG Changjie,ZHANG Chenglin
Abstract:At present,the traditional passive filter in on-board charger(OBC) has poor low-frequencyperformance,an active feedback loop was added to the traditional on-board charger passive filter,a design method of on-board charger electromagnetic interference(EMI)hybrid filter based on current sensing and current in...
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Number of views:441 Amount of downloads:322
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CHEN Dongdong,ZHANG Shengqi,XIAO Long
Abstract:Due to the wide control bandwidth of the shunt active power filter(SAPF),the resonance problemof the LCL output filter has become a key problem of the SAPF. To solve the resonance problem of the LCL filter,anovel damping method based on active damping circuit was proposed to achieve the damping effect witho...
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Number of views:469 Amount of downloads:311
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SHI Xuelei
Abstract:Under the power grid dispatch mode of "source follows load",different AC power supply modes arerequired in the market. To meet market demand,an uninterruptible power supply(UPS)system compatible withvarious AC power supply modes was designed. The modes of the system were selected by switching devices.Accord...
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Number of views:511 Amount of downloads:312
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ZHOU Jie,ZHAO Shiwei,WU Yihao,YANG Xiangyu
Abstract:In order to optimize the current stress of dual active bridge(DAB)converter,an improved dualphase shift(IDPS)modulation was proposed based on the traditional dual phase shift(DPS)modulation. Firstly,the working principle of IDPS modulation was introduced,its steady-state working characteristics were analyze...
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Number of views:868 Amount of downloads:412
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FAN Enze,LI Yaohua,GE Qiongxuan,ZHAO Lu
Abstract:Under digital control,the inner current loop of the LC-type inverter is affected by the control delay,which leads to the weakening of its active damping effect. Increasing the sampling control frequency can effectivelyreduce the negative influence of digital control delay. Furthermore,in order to suppress t...
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Number of views:768 Amount of downloads:404
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ZHANG Jun,GONG Min,ZHOU Yi,XIE June,CAO Lei,LIU Yingying
Abstract:In traditional current protection,the effective value of current is compared with the setting value toidentify the fault which is the typical protection scheme for the transmission lines of the power distribution systems.The current is calculated by the fast Fourier transform algorithm. As the calculation o...
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Number of views:681 Amount of downloads:419
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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...
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Number of views:1195 Amount of downloads:621
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MAYoujie,HE Xiaoyu,ZHOU Xuesong,ZHANG Chao
Abstract :To solve the chaos problem of inverter in new energy generation system,a regulation scheme ofH-bridge inverter based on active disturbance rejection contro(l ADRC)was proposed. Aiming at the phenomenon of poor steady-state and dynamic characteristics of inverters in chaotic state,a discrete model of the in...
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Number of views:1111 Amount of downloads:707
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SONG Weiqiong,GUO Shuai,HAN Liu,XU Chaoqun,SONG Wei,LÜ Fengming
Abstract:In order to monitor current distribution state of parallel silicon carbide(SiC)devices in photovoltaicinverter,a contactless monitoring solution based on anisotropic magnetoresistive sensor was proposed. Accordingto practical position of SiC devices on PCB board,multiphysics simulation tool COMSOL was emplo...
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Number of views:1091 Amount of downloads:559