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622 results on '"Meng, FanCheng"'

6. The Impact of Large-Scale New Energy Generation Integration into the Power System on Real-Time Electricity Spot Market Clearing and Electricity Market Pricing

Author

Shi, Jianguo, Li, Wenze, Guo, Qi, Hao, Qianpeng, Li, Hongbo, Meng, Fancheng, Li, Qiang, Yao, Shun, Du, Zhijie, Li, Rongli, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Tan, Kay Chen, Series Editor, Wen, Fushuan, editor, and Aris, Ishak Bin, editor

Published
2024
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25. Improved sliding mode control strategy for flexible multi-state switch based on feedback accurate linearization decoupling

Author

MA Wenzhong, YU Huan, LI Weiguo, MENG Fancheng, LIU Xingyu, and YAO Minrui

Subjects
smart distribution network, flexible multi-state switch(fmss), modular multi-level converter, feedback accurate linearization, improved sliding mode control, full decoupling, Applications of electric power, TK4001-4102
Abstract

Flexible multi-state switch (FMSS) has the characteristics of nonlinearity and strong coupling. It is difficult to achieve complete decoupling of output power through traditional proportional integral (PI)control. There are some problems in PI control such as difficulty in adjusting PI parameters, slow system dynamic response speed, and poor robustness. Firstly, feedback accurate linearization is uesd to transform the FMSS from a high-order nonlinear system into two completely independent first-order linear systems, realizing the complete decoupling of active and reactive currents. Then, aiming at the problems of slow approach speed, poor system convergence performance and large motion chattering of traditional sliding mode control, an improved sliding mode control based on adaptive approach rate is designed to optimize the voltage outer loop and the current inner loop, and the stability of the proposed algorithm is verified by Lyapunov function. Finally, the simulation analysis of the three-port FMSS are carried out in the Simulink software under the conditions of output power disturbance, AC voltage sag and system parameter perturbation. The results show that the proposed control enhances the robustness and anti-interference ability of the system, and it can effectively increase the dynamic response speed of the system.

Published
2023
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40. Pluronic F127-modified Ba[TiO.sub.3] for ceramic/polymer nanocomposite dielectric capacitor with enhanced energy storage performance

Author

Chen, Jian, Zhou, Chuang, Cai, Wei, Huang, Fuxiang, Zhang, Chunyan, Cao, Liangliang, and Meng, Fancheng

Subjects
Electrical conductivity -- Analysis, Energy storage -- Methods, Dielectrics -- Usage, Capacitors -- Design and construction -- Materials, Engineering and manufacturing industries, Science and technology
Abstract

Ceramic/polymer nanocomposites have been extensively explored for dielectric capacitor application due to their high energy storage performance and ease of processing, flexibility, and low cost. However, improving compatibility between inorganic and organic materials is of great significance and has been a long-standing challenge. In this work, the polymer surfactant Pluronic[TM] F127 was employed to perform surface modification of Ba[TiO.sub.3] through a facile solution process. The compatibility between Ba[TiO.sub.3] nanoparticles and P (VDF-HFP) can be remarkably strengthened by the affinity between F127 polymer chains and the organic matrix. Structural defects such as pores, cracks, and agglomeration of inorganic particles were obviously reduced, and interfacial polarization has been significantly enhanced. The discharged energy density [U.sub.d] and charge-discharge efficiency [eta] reach up to 5.0J/[cm.sup.3] and 58.1% under the breakdown strength of 3740 kV/cm for the nanocomposite containing 1 vol% BT@F127. These dielectric properties are clearly better than the nanocomposite using unmodified BT, as well as similar hybrids reported previously. KEYWORDS ceramic/polymer nanocomposite, dielectric property, energy density, surface modification, 1 | INTRODUCTION Dielectric capacitors are the basic components of energy storage in modem electronic and electrical systems. They have been widely used in the fields of power transmission, hybrid [...]

Published
2022
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