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WANG Yiming，XU Po，YANG Ke，XIA Kun，WANG Jingxia
Abstract：A 2 kV photovoltaic grid-connected inverter system based on a five-level active neutral-pointclamped（ANPC-5L）topology was designed for high-power，high-voltage applications. This topology significantlyimproved the system efficiency and reliability by increasing the number of output levels and reducing the sw...
更多Number of views：41 Amount of downloads：45
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DING Jinjin，PENG Bo，ZHANG Feng，MAO Xun
Abstract：To address the large inrush current during the switching of a virtual synchronous generator（VSG）from off-grid to grid-connected，and the stability issues of traditional pre-synchronization schemes，a controlmethod for the phase-locked loop（PLL）pre-synchronization unit to be cut off in non-grid-connected time ...
更多Number of views：37 Amount of downloads：70
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ZHANG Sen，LÜ Zhenhua，LI Qiang
Abstract：After frequency disturbances occur in the external power grid，grid-forming converters（GFCs）areprone to synchronization instability. Analysis shows that adding a low-pass filter（LPF）to the active loop can causeconflicts between the transient stability and frequency stability of GFC，while adding LPF to the re...
更多Number of views：40 Amount of downloads：59
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TIAN Jiahui，QI Xiaoguang，ZHAO Kailin，XU Tianfeng，CHEN Yueqing，LI Linjing
Abstract：Junction temperature is a key indicator of the health status of SiC MOSFET，and real-timemonitoring of junction temperature is an important foundation for condition monitoring，health management andlifetime prediction. The real-time monitoring of junction temperature was investigated based on the on-resistanc...
更多Number of views：36 Amount of downloads：66
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LI Fei，YU Kongli，XIE Youlin，YIN Xiaoping，LIU Wei
Abstract：Insulated gate bipolar transistor（IGBT）as an important part of wind power converter，through thehigh frequency switch to achieve efficient conversion of electrical energy，its long-term complex operation will leadto IGBT performance decline，increase the risk of failure and affect the stability of the system. ...
更多Number of views：556 Amount of downloads：4016
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HU Yifei，WEI Ran，CHEN Zhihua，LI Wei，SHI Chengliang
Abstract：As the requirements for real-time performance and accuracy in power operation scenarios continueto rise，traditional single-source perception methods face significant challenges in complex environments anddecision making support. To address this issue，the design of an on-board perception device for power ope...
更多Number of views：597 Amount of downloads：4214
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HU Xiangzheng，GAN Pei，LI Ke，WU Wenqi，GUO Hanting，HUANG Xianjin
Abstract：The insulated gate bipolar transistor（IGBT），as the core device of power electronics system，iswidely used in industrial control，transportation and new energy power generation due to its high efficiency andhigh switching frequency. However，the internal bonding wire is vulnerable to thermal stress and current ...
更多Number of views：1178 Amount of downloads：5447
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YANG He，CHEN Zhaoyu，ZHANG Jinhua，XU Jing，WANG Jingpeng，ZHU Shichang
Abstract：In response to the issues of large volume，high cost，and complex control algorithms associated withvoltage regulation equipment in new energy distributed power distribution areas，a two-stage voltage regulationcircuit topology based on a DC-link capacitor-free structure was proposed. Based on this topology，a ...
更多Number of views：1643 Amount of downloads：9106
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YAN Yingshi，QIU Dongyuan
Abstract：Aiming at the interconnections requirements of power frequency（PF），low frequency（LF）anddirect current（DC）brought by the offshore wind power，a hybrid multi-frequency converter was designed basedon the nine-bridge-arm modular multilevel converter（9A-MMC），in which the diode-clamp sub-module wasselected for upp...
更多Number of views：2064 Amount of downloads：10077
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ZHANG Jianwen，MA Haixiao，JIAN Jiahong，LIU Yueneng
Abstract：To eliminate the leakage current of single-phase non-isolated photovoltaic inverter，a six-switchphotovoltaic inverter topology with low leakage current was proposed. The topology consists of a voltage multipliercircuit，a common ground three-level inverter circuit and a LC output filter circuit. The combinat...
更多Number of views：1774 Amount of downloads：10529
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CUI Yulu，ZHANG Zhiguo，YANG Gang，GAO Yipeng，ZHAO Jiantao
Abstract：In response to the "double carbon" strategy，the state has made great efforts to develop new energy.As an important carrier of distributed new energy，the DC building microgrid system has attracted extensiveattention. In the DC building microgrid system，as the core link of voltage and power conversion，DC conv...
更多Number of views：2061 Amount of downloads：8179
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JIN Haotian，LI Haifeng，MA Kai，TAN Lingqi，LI Jia
Abstract：For the half-bridge modular multilevel converter（MMC）bridge arm in a control cycle within theinput and removal of the submodule of the respective capacitance voltage sequence before and after the relationship of the characteristics of the same，based on the last cycle of the submodule switching state and the...
更多Number of views：1895 Amount of downloads：9752
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LI Haifeng，CHEN Bin，CHEN Jin，HU Xiwen，LIU Youbin
Abstract：Line commutated capacitor high-voltage direct current（ LCC-HVDC）is an important technicalform of high-voltage direct current transmission. Since the converter valve was composed of semi-controlled devicethyristors，the commutation failure of the inverter-side converter station has become a key issue affectin...
更多Number of views：2030 Amount of downloads：11597
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HUO Zhen，XIE Jingcheng，WANG Chenyu，LIU Hao，MENG Jianhui，GAO Benfeng
Abstract：Grid-forming（GFM）converter is a voltage source and has good adaptability and frequency-voltagesupport in weak grid，but is prone to oscillation instability in strong grid due to impedance characteristics. To solvethis problem，based on the analysis of the impedance characteristics of the GFM converter，an adap...
更多Number of views：2609 Amount of downloads：11384
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MENG Zhaohe，LU Beibei，YU Zhiqiang，DUAN Yichao，GE Tingting
Abstract：For the application of high-power IGBT，its driving circuit is the core part of the entire powermodule. The reliability of the driving circuit to a certain extent determines the reliability of the entire powerelectronic device，and designing highly reliable driving circuits has practical significance. The int...
更多Number of views：1986 Amount of downloads：9971
