Power electronics
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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...
更多Number of views：2890 Amount of downloads：1480
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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...
更多Number of views：2799 Amount of downloads：1512
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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...
更多Number of views：3273 Amount of downloads：1795
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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...
更多Number of views：3314 Amount of downloads：2160
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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 ...
更多Number of views：3176 Amount of downloads：1713
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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...
更多Number of views：3222 Amount of downloads：1720
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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...
更多Number of views：3253 Amount of downloads：1737
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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...
更多Number of views：3566 Amount of downloads：1657
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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...
更多Number of views：3036 Amount of downloads：1505
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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...
更多Number of views：3700 Amount of downloads：1884
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WANG Xing，TAN Peixiao，CHENG Zhijiang，MAWanqing，TIAN Bo
Abstract: Retired power batteries have poor parameter consistency，when they are used for energy storageafter series and parallel connections，the barrel effect is obvious and the failure rate is high. So the improved modular multilevel H-bridge converter（MMHC）distributed energy storage based on modular multilevel con...
更多Number of views：3536 Amount of downloads：2034
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DUAN Huiqin，HUANG Zhiyong，DU Shuping，YAN Tianbi，WEI Yongheng，WEI Hongxing，CHENG Zhuo
Abstract: Bidirectional DC-DC converter is the key equipment to realize the power balance of DC microgrid，and the accurate distribution of load current is one of the main objectives of multi converter parallel control. Aimingat the current sharing problem of bidirectional DC-DC converter，a current sharing control ba...
更多Number of views：3549 Amount of downloads：1740
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FU Lulu，ZHAO Hong
Abstract: The classical model prediction algorithm of three-level grid-connected converter has manydisadvantages，such as large computation，unfixed switching frequency and difficulty in selecting weight factors，which limit its development in grid-connected converter field. To solve above problems，a modified control a...
更多Number of views：3626 Amount of downloads：1720
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DAI Yemin，LI Yukun，LIN Shunfu，BIAN Xiaoyan，LI Dongdong
Abstract: With the wide application of new energy grid connection technology，a large number of powerelectronic devices are connected to the power grid，and the power quality is affected by harmonic interaction. Aiming at the harmonic interaction problem of multi-inverter grid-connected system，the multi-input and mult...
更多Number of views：3461 Amount of downloads：1763
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CHENG Zhiyuan，LI Zheng，WU Longfei，CHEN Kun，SUI Licheng
Abstract: Wireless power transmission technology can effectively solve the problems of wear，leakage and soon in the energy transmission process of traditional plug-in electrical equipment because of its non-physical contactenergy transmission mode. In view of this，a new type of secondary side magnetic ring strip typ...
更多Number of views：3533 Amount of downloads：1935
