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YANG Shude1,ZENG Zikang,ZHANG Xinwen,GAO Xiongying,CAI Changhong,ZHOU Xin
Abstract: For the technical requirements of on-load voltage regulation based on power electronic switches,athyristor-based on-load voltage regulation unit topology was given based on the analysis of the possible conduction state of each switch in the steady state and the switching law of different states. Considerin...
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Number of views:1958 Amount of downloads:996
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ZHANG Liuyang,XU Limei,HUANG Ying,WANG Yao
Abstract: In order to improve the load transient response speed of Buck LED constant current driver,acapacitive current ripple-controlled(CCRC) Buck LED constant current driver was proposed. Based on theoperating principle of Buck LED constant current driver,the state space averaging model of Buck LED constantcurren...
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Number of views:1997 Amount of downloads:949
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ZHAO Ruochen,MEI Baishan,ZHANG Jinwei,FU Wenbo
Abstract: Active power filter(APF)has become an important measure for harmonic control because it cantrack and compensate reactive power and suppress harmonics adaptively,dynamicly,and in real time. APF wastaken as the research object,and on the premise of verifying the differential flatness of the system,a differen...
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Number of views:1976 Amount of downloads:948
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LI Zhe,LI Chengyuan,YUAN Yuan,CHEN Yujie,WANG Ziman
Abstract: Insulated gate bipolar transistor(IGBT)is widely used in the industry,but the IGBT junctiontemperature is easily affected by changes in operating conditions and the heat dissipation environment in which it islocated. Poor heat dissipation channels will cause the IGBT module to remain in a high temperature ...
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Number of views:1863 Amount of downloads:901
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SHEN Jiexin,LIU Lei,HE Dandong,LIU Zhenguo,CHU Houguang,MA Hanchao
Abstract: When the current method is used to control the DC transformer of the DC-DC converter,thecontrol efficiency is low,the immunity is poor,and the loss detection error is large. In order to solve the existingproblems,a DC transformer control method based on the SRDAB DC-DC converter was proposed. By analyzingt...
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Number of views:1971 Amount of downloads:1003
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TIAN Kai,YU Zhibin,YUAN Yuan,CHU Zilin,SUN Chuanjie,YANG Jingran
Abstract: A fine dead-time compensation method based on the medium voltage three-level IGCT outputfiltering topology was proposed to realize the real-time calculation and compensation of the dead-time effect of theinverter output. Based on the topology of the output filter,the transfer function was established,and t...
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Number of views:1975 Amount of downloads:937
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WANG Haiyan
Abstract: In order to reduce voltage overshoot of DC/DC converter and suppress chattering,a sliding modecontrol method based on improved variable speed reaching law was proposed. The improved variable speed reaching law inherited the advantages of variable speed reaching law and adjusted approach speed with system s...
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Number of views:1963 Amount of downloads:967
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SUN Chuanjie,TIAN Kai,YANG Jingran,CHU Zilin,MA Jie
Abstract: A high-power high-frequency power supply was designed for test requirements of some specialelectrical equipment. In the power supply,cascaded H-bridge was adopted to form five-level topology structure,the integrated modulation method was adopted,including bipolar PWM modulation,carrier phase-shifted SPWMmo...
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Number of views:2359 Amount of downloads:1073
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YAN Yuhao,ZHOU Buxiang,CHEN Shi,DONG Shen,LIU Zhifan,ZANG Tianlei
Abstract: At present,the focus of research on doubly fed induction generator(DFIG)high voltage ride through is a single high voltage fault.However,after DFIG low voltage ride through,due to the irrationality of the reactive power compensation strategy,a low/high voltage compound fault have be caused,which have a cer...
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Number of views:2401 Amount of downloads:1133
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CHENG Zhiyuan,WU Longfei,LI Zheng,SUI Licheng,WU Xiaoting
Abstract: Current transformer(CT)inductive energy extraction is the most effective power supply method foronline monitoring equipment of power transmission cables. However,the low current of the transmission cable willcause the CT to fail to obtain energy,which will lead to the occurrence of equipment energy supply ...
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Number of views:2328 Amount of downloads:1101
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LI Qinzhao,ZHAO Xuemin
Abstract: When the microgrid is operating in island mode,the cascaded H-bridge(CHB)converter as aninterface device may need to be configured with a non-sinusoidal reference wave of pulse width modulation(PWM)when implementing auxiliary functions such as negative sequence compensation. In order to avoid overmodulatio...
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Number of views:2365 Amount of downloads:1107
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CHEN Guangzhu,YANG Yuxin,ZHANG Yanan,LÜ Peihe,WANG Jianquan
Abstract: The new version of the national standard GB/T 15576—2020《Low-voltage reactive powercompensation assemblies》was released on November 19,2020,and has been implemented on June 1,2021,replacing the old standard. Through comparative analysis of the content of the new and old standards and key tests,the test met...
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Number of views:2347 Amount of downloads:1190
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TIAN Kai,WANG Ziman,CHU Zilin,YU Zhibin,YUAN Yuan,SONG Peng
Abstract: A method to extract the equivalent thermal resistance parameters of double-sided water-cooledheatsink was proposed. Based on this method,the real-time calculation of junction temperature and overtemperature protection of integrated gate commutation transistor(IGCT)power device were implemented by the water...
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Number of views:2419 Amount of downloads:1108
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WANG Shijun,HAO Quan,LI Wenlong
Abstract: In view of the problems of unstable operation waveforms,high output current stress andinstantaneous fluctuation difference of load in the current sharing control of two-way DC-DC converter in flexiblesubstation,a method of independent current sharing control of two-way DC-DC converter in flexible substatio...
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Number of views:2180 Amount of downloads:996
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ZHOU Xuesong,XIE Bingjie,MAYoujie,LIU Qian
Abstract: To effectively solve the problem of stable control for DC-bus voltage in the independent photovoltaicenergy storage system under multi-source disturbances,a bidirectional DC-DC converter control scheme based onimproved linear active disturbance rejection control(LADRC)was proposed. The linearized small sig...
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Number of views:2785 Amount of downloads:1221