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DING Runchu，SHI Shuhuai，ZHUO Fang，WANG Feng
Abstract: The application of DC transmission and distribution network faces a variety of complex designscenarios，among which there are DC/DC conversion requirements with unipolar input and really bipolar output. The bipolar output of this application scenario can easily lead to unbalanced output voltage when the loa...
更多Number of views：2361 Amount of downloads：1194
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TIAN Kai，YUAN Yuan，YU Zhibin，JIANG Yida，LI Nan，SONG Peng
Abstract: Three-level neutral-point balance method based on PWM pulse width dynamic regulation wasproposed to realize optimized PWM high-performance closed-loop control and three-level neutral-point balancecontrol of the inverter at low switching frequency. The fundamental current component was extracted from thecur...
更多Number of views：2320 Amount of downloads：1293
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SONG Mingxuan，FENG Yuan，ZHANG Tian，HE Fengyou，GAO Jie
Abstract: Aiming at the lack of realtime detection methods of operation status for NPC three-level inverter，anindirect detection method was studied. In this method，the commutation process of NPC three-level inverter wasanalyzed. And according to Kirchhoff's law，the current and voltage models of three-level circu...
更多Number of views：2305 Amount of downloads：1216
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WANG Peng，LI Zhongzhao，GONG Zhaowei，ZHANG Ningchao
Abstract: In order to solve the problem of coupling mechanism offset in wireless power transfer system，theS-S and LCC-LCC dual topological wireless power transfer system based on parameter optimization was proposed.Firstly，the output characteristics of S-S and LCC-LCC topological energy transmission channels were an...
更多Number of views：2455 Amount of downloads：1250
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GAO Xiaozhi，QIAO Yu，CAO Xin，LI Zheng，SUN Huiqin，SUN Hexu
Abstract: DC active power filter（DC-APF）can effectively suppress the bus voltage ripple of DC microgrid. Inorder to solve the problem that DC-APF can not work normally due to the failure of switching devices，a fault-tolerant DC-APF topology based on H-bridge converter was proposed，which could ensure the power qualit...
更多Number of views：2432 Amount of downloads：1343
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YE Hai
Abstract: Flexible DC power grid is an important way for efficient transmission of various types of renewableenergy. How to design an efficient reclosing strategy to make it have the ability of rapid recovery after fault is a keyproblem to improve the stability of the whole AC/DC power grid. According to the working...
更多Number of views：2230 Amount of downloads：1054
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WANG Chun，WU Pengtao，GUO Bin，LÜ Jing，HUANG Hongwei，MAO Wenzhao
Abstract: In order to improve the efficiency of power grid equipment maintenance，an evaluation index ofequipment maintenance value based on Markov model was proposed，and an optimization decision method of power grid maintenance based on maintenance value evaluation was constructed. The value evaluation index of powe...
更多Number of views：2272 Amount of downloads：1165
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LU Shengzhi，CAO Junjie，ZHOU Feng，JIN Cheng，CHEN Zhenghua
Abstract: With the global energy and environmental problems becoming increasingly prominent，the regionalintegrated energy system（RIES）with multi-energy complementary characteristics is an effective solution. In orderto realize the comprehensive and reasonable evaluation of energy efficiency of the RIES，a detailed ev...
更多Number of views：2267 Amount of downloads：1140
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ZHUANG Gewei，GU Zhen ，FENG Xiuqing ，DUANYan
Abstract: Automatic verification system of smart meter may be abnormal in the long-term operation process，but the regular manual detection method can not timely learn the risk information，shortening the period of manual inspection will reduce the work efficiency of automatic verification. In most cases，the sample da...
更多Number of views：2212 Amount of downloads：1047
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LU Wu，ZHENG Renjie，ZHAO Wenbin，TANG Jiayuan
Abstract: Efficient and accurate short-term load forecasting is essential to the safe and stable operation of thepower system. A combined prediction model based on empirical mode decomposition（EMD）and gated recurrentunit（GRU）was proposed. First，the date factors ，meteorological factors and historical load factor were...
更多Number of views：2228 Amount of downloads：1220
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WANG Xiaoyang，ZHAO Jinbin，ZHU Yuxin
Abstract: With more and more renewable energy devices and loads connected to the traditional power grid bypower electronic equipment，the negative resistance characteristics of power electronic equipment lead to the weakinertia characteristics of high power electronic power systems. Therefore，the stability of the mul...
更多Number of views：2938 Amount of downloads：1806
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ZHANG Fangyuan，JING Yun，WANG Dan
Abstract: A vector control method based on the modified super-twisting observer and non-singular terminalsliding mode was proposed for stand-alone doubly-fed wind power generation systems under unbalanced loads. The fundamental frequency and double frequency components of the rotor current were observed by the modif...
更多Number of views：5023 Amount of downloads：3716
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ZHANG Cheng，HAN Cun，REN Wei，ZHAO Jinlei，ZHANG Xiao，ZHANG Xudong
Abstract: Based on the AC-DC-AC variable frequency speed control system of synchronous motor，theparameters of PI regulator were optimized by chaos particle swarm optimization algorithm. A pseudo-randomsequence generation method was constructed using a chaotic map dynamic integer tent map，and an objective function of...
更多Number of views：2607 Amount of downloads：1581
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LIU Siyan
Abstract: In order to realize the speed estimation and speed regulation of the permanent magnet synchronousmotor（PMSM）controller，a new type of fractional-order model reference adaptive speed observer was designed.Compared with integer-order observers，this strategy enhanced the adjustable degrees of freedom of the co...
更多Number of views：2602 Amount of downloads：1385
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LIU Wenqi，DING Wenfang
Abstract: In order to overcome the shortcomings of the classic Boost converter，such as low boost ratio，largeinput current ripple，and high voltage stress of power devices，a new type of zero input current ripple high gain nonisolated DC/DC converter was proposed. The combination of isolation type Sepic converter，coupl...
更多Number of views：2456 Amount of downloads：1181
