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WANG Huahan,ZHAO Shiwei
Abstract:A dual active bridge(DAB)DC-DC converter voltage control strategy based on double-integralsliding mode control was proposed,which can obtain good control effect under the condition that the modelaccuracy requirements are low and the controller design process is simple. Firstly,the reduced-order model of the...
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Number of views:67 Amount of downloads:72
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YANG Zhenyu,WANG Wei,XU Wenzheng,ZUO Zhiling,CHEN Changqing
Abstract:The telecommunication power supply applied in 5G base stations can save energy consumption byreducing the output voltage when the equipment works in standby state. Nevertheless,frequent and rapid outputvoltage regulating of the converters is challenging. To solve this problem,the concept of partial power co...
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Number of views:32 Amount of downloads:25
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ZHANG Xudong,WANG Yangyang,LI Xiaolong,LÜ Jin
Abstract:Aiming at the problem that the ripple content of current and voltage in cycloconverter speed controlsystem is large and the ripple period is time-varying,the real-time sampling value is not suited for feeding back tothe speed control system directly,a variable period mean sampling algorithm was proposed. Fi...
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Number of views:30 Amount of downloads:26
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SUN Tao,WANG Tao
Abstract: The semi-bridgeless dual Boost power factor correction(PFC)circuit can obtain higher conversionefficiency without increasing common mode noise,but the return current of the input AC terminal producesadditional losses on the introduced diodes,which reduces the conversion efficiency. The replacement of diode...
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Number of views:211 Amount of downloads:177
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ZHOU Qun,XIA Haogang,CAI Xiyu,LIN Dong,YAN Tiesheng
Abstract:The amplitudes of strong pull-in current and hold-on current passing through the high speedsolenoid valve were regulated accurately by using hysteresis control to realize pulse width modulation of thevoltage of fast solenoid valve,the duty cycle of the current pulse passing through the high speed solenoid v...
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Number of views:191 Amount of downloads:200
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CHEN Xiaoru,HUANG Longyi,LAI Shengjie,YANG Mingjia,WANG Zeqing,XIA Chengjun
Abstract:The circulating current of metal sheath in high voltage cable is the superposition of induced currentcomponent and leakage current component. At present,the calculation of induced current component is relativelymature,but the calculation of leakage current component is insufficient,which affects the final c...
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Number of views:188 Amount of downloads:164
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KONG Lingqing,HE Shan,DONG Xinsheng,LI Ji,YANG Dingqian,HU Shuai
Abstract: In order to solve the problem of voltage and frequency fluctuations at the grid-connected point of thepermanent magnet wind turbine during high and low voltage ride-through,a virtual synchronous generator(VSG)was proposed to control the grid-side converter to improve the inertia and damping of the permanen...
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Number of views:207 Amount of downloads:167
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CUI Qian,ZHOU Jiemin,DING Zhengdao,QIN Jina,GAO Yiqing,JIANG Pengchuan
Abstract:In order to solve the problem of overvoltage and overcurrent in the process of load sudden changefor ion thruster screen grid power supply,the phase shift pulse frequency modulation(PS-PFM)was used tostabilize the output voltage of the LLC resonant converter. When the sampling voltage is lower than the lowe...
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Number of views:182 Amount of downloads:1172
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DAI Hui,LIU Yuxiang,LI Guorun,WANG Jianyuan,LIU Jingwen,TAN Wanqi
Abstract:Three port converter(TPC)has the characteristics of high integration,high power density andsingle-stage conversion between ports,but at the same time,the energy flow is affected by the interaction ofmultiple variables. Model predictive control(MPC)was introduced to optimize the dynamic response of outputvol...
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Number of views:206 Amount of downloads:167
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ZHU Ye,CHEN Yuanrui,CHEN Yang,WANG Zhenlin
Abstract:The safe and efficient operation of lithium batteries depends on accurate state of charge(SOC)estimation. However,the traditional battery model and SOC estimation have poor robustness and reliability undernoise interference. Aiming at the problem of SOC cooperative estimation under noise interference,firstl...
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Number of views:259 Amount of downloads:284
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JIA Pengfei,HE Yongpeng,YANG Jianxin,ZHANG Qing,WU Wenda
Abstract:Industrial communication technology is an effective way to achieve network control of industrialequipment. With the development of Ethernet technology in recent years,a top layer application technology basedon Ethernet,PROFINET has rapidly developed. However,due to the lack of high-speed network interfaces ...
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Number of views:233 Amount of downloads:254
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LIU Juan,LEI Hui,LÜ Jin,WANG Yang,Xu Deshu
Abstract:The state of charge(SOC)of batteries is one of the most important parameters in lithium-ionbattery management technology,and high-precision SOC estimation is beneficial for the grid connection andcontrol of energy storage stations. Battery charge and discharge data are not only time-series in nature,but als...
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Number of views:246 Amount of downloads:379
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XU Binbin,CHEN Chang,ZHANG Aoyu,WANG Yongqiang
Abstract: In order to study the distribution of magnetic field and temperature field of dry-type transformeriron core more accurately,analyze the influence of different excitation on the magnetic field loss and hot spottemperature rise of dry-type transformer core,firstly,Maxwell was used to calculate the transient ...
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Number of views:249 Amount of downloads:749
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WU Qing,AN Shaoliang,XU Yixuan,DONG Songsong
Abstract: A quasi-resonant Flyback(QR-Flyback)converter with 65 W output was designed. The valleyswitching principle and the switching loss reduction mechanism of QR-Flyback were analyzed,the frequency andloss characteristics of the system under different working conditions were compared,and the advantages anddisadv...
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Number of views:200 Amount of downloads:290
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GUO Jiahao,YANG Xiong,FANG Xin,GUAN Jiamin
Abstract: The secondary voltage signal output by electronic capacitive voltage transformer in the primary andsecondary fusion equipment is very weak,which is easy to be interfered by high-order harmonics,resulting inunstable signal transmission. In order to solve these problems,a high-order and high-precision filter...
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Number of views:203 Amount of downloads:241