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MA Xiaoliang
Abstract: Several problems and their solutions of high-performance inverter-fed motor drive systems wereintroduced: the features and some matters needing attention of two- closed-loop systems; how to improve speedfollowing performance during starting and breaking and to improve anti-disturb ability by means of predicti...
更多Number of views：11057 Amount of downloads：11139
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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：24 Amount of downloads：45
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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：26 Amount of downloads：46
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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：24 Amount of downloads：42
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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：24 Amount of downloads：45
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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：23 Amount of downloads：40
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ZHANG Yuanbo，JI Wei，ZHANG Yun，DAI Zhihui，HE Jingyuan
Abstract：The traditional fault calculation method in the case of distribution network with multi-point Tconnected inverter interfaced distributed generator（IIDG）has the problems of complicated calculation process and large calculation amount. Therefore，a fault calculation method for new distribution systems with T-c...
更多Number of views：23 Amount of downloads：32
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SHANG Liqun，WANG Shuo
Abstract：As the proportion of installed photovoltaic（PV）capacity increases year by year，accurate predictionof PV output and the realization of group control and management of PV clusters become crucial. A multi-site PVoutput prediction method that integrates deep fusion of graph convolutional neural network（GCN），lon...
更多Number of views：22 Amount of downloads：39
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LAI Jiayuan，YAO Ruotian，LIU Dishen，BAI Hao，XIA Zipeng，LIU Yipeng
Abstract：In order to further improve the power density and output performance of the transformerlessmedium-voltage power quality control device，a partial submodule multiplexing modular multilevel converter（PSM-MMC）topology and its control strategy were proposed. The PSM-MMC was composed of four groups ofarm submodul...
更多Number of views：7 Amount of downloads：4
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LIU Yuqing，ZHANG Shijie，SHI Deyong
Abstract：Under the planned system，the fixed price makes it difficult to encourage hydropower to participatein regulation，and the complex hydraulic constraints lead to difficulties in hydropower spot market clearing. Toencourage hydropower to participate in regulation through spot-price incentives and enrich its reve...
更多Number of views：6 Amount of downloads：6
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LEI Qiang，WU Pengrong，LI Zhenwen
Abstract：In response to the intermittency and uncertainty of wind power generation，which result in low windpower utilization and high electricity purchase costs in microgrids，an intelligent dispatch strategy based on aresidual-like soft actor-critic（R-SAC）algorithm was proposed. The scheduling problem was formulated...
更多Number of views：7 Amount of downloads：10
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HE Long，MA Jincai，ZHU Yongming
Abstract：The contact electrical contact fault of gas insulated switchgear（GIS）will affect its electricalperformance. A multi-physics coupling model of GIS contact vibration was first established to address the difficultyin diagnosing contact faults. An experimental platform for high-current detection of GIS was buil...
更多Number of views：3 Amount of downloads：5
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LIANG Hong，QIAN Renjun，CHENG Yongjun，HU Jiangyu，ZHANG Man
Abstract：As a kind of winch driven by motor，electric winch has more excellent performance of cable control.However，in the process of retracting and releasing the cable，the drum inertia of the electric winch will change with the change of the cable stock. This unknown inertia change will lead to mismatching of motor ...
更多Number of views：518 Amount of downloads：2712
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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：706 Amount of downloads：2725
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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：847 Amount of downloads：2690
