SYMMETRICAL

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ON ALMOST AXISYMMETRIC INCOMPRESSIBLE MAGNETOHYDRODYNAMICS IN THREE DIMENSIONS
《Acta Mathematica Scientia》2025年第2期446-472,共27页Qunyi BIE Hao CHEN 
supported by the National Natural Science Foundation of China(11871305).
In this paper,we study the Cauchy problem of three-dimensional incompressible magnetohydrodynamics with almost symmetrical initial values in the cylindrical coordinates.Here the almost axisymmetric means that(■θu_(0...
关键词：MAGNETOHYDRODYNAMICS almost symmetrical cylindrical coordinates 
Transient Stability Analysis and Improved Control Strategy of PMSG-based Grid-forming Wind Energy Conversion System Under Symmetrical Grid Fault
《Journal of Modern Power Systems and Clean Energy》2025年第1期128-141,共14页Hai Xie Jun Yao Wenwen He Dong Yang Sheng Gong Linsheng Zhao 
supported by the National Natural Science Foundation of China(No.51977019)。
The transient synchronization characteristics and instability mechanism of the permanent magnet synchronous generator(PMSG)-based grid-forming wind energy conversion system(GFM-WECS)under symmetrical grid fault have r...
关键词：Grid-forming(GFM) permanent magnet synchronous generator(PMSG) wind energy conversion system(WECS) DC-link voltage transient stability 
Rapid Fabrication of Electrodes for Symmetrical Solid Oxide Cells by Extreme Heat Treatment
《Energy & Environmental Materials》2024年第5期349-356,共8页Weiwei Fan Zhu Sun Manxi Wang Manxian Li Yuming Chen 
the funding from the Natural Science Foundation of Shaanxi Province(No.2020JQ-065);China Postdoctoral Science Foundation(No.2020 M683459);Start-up Research Fund of Southeast University(4003002330);Chen Xing Plan of Shanghai Jiao Tong University
Symmetrical solid oxide cells(SSOCs)are very useful for energy generation and conversion.To fabricate the electrode of SSOC,it is very time-consuming to use the conventional approach.In this work,we design and develop...
关键词：electrochemical performance extreme heat treatment perovskite electrode symmetrical solid oxide cells 
Dynamic Couplingand Cooperative Control for Multi-paralleled Doubly Fed Induction Generator Wind Farms during Symmetrical Low Voltage Ride-through in a Weak Grid
《Protection and Control of Modern Power Systems》2024年第3期112-125,共14页Lei Guan Jun Yao 
the National Natural Science Foundation of China(NSFC)(No.51977019);in part by the Joint Research Fund in Smart Grid under Cooperative Agreement between the National Natural Science Foundation of China(NSFC)(No.U1966208);State Grid Corporation of China(SGCC).
In multi-fed grid-connected systems,there are complex dynamic interactions between different pieces of equipment.Particularly in situations of weak-grid faults,the dynamic coupling between equipment becomes more prono...
关键词：Doubly fed induction generator(DFIG) wind farms(WFs) dynamic stability low voltage ride through(LVRT) weak grid dynamic coupling 
A review of ultra-high temperature heat-resistant energetic materials
《Defence Technology（防务技术）》2024年第8期33-57,共25页Rongzheng Zhang Yuangang Xu Feng Yang Pengcheng Wang Qiuhan Lin Hui Huang Ming Lu 
supported by the National Natural Science Foundation of China(Grant Nos.21975127,22105102,and 22135003);Young Elite Scientist Sponsorship Program by CAST(Grant No.YESS20210074);the Fundamental Research Funds for the Central Universities(Grant No.30921011204)。
Heat-resistant energetic materials refer to a type of energetic materials that possess a high melting point,high stability and operational safety. By studying the structures of these energetic materials has showed tha...
关键词：Heat-resistant energetic materials Organic synthesis CONJUGATED Hydrogen bond Symmetrical structure STABILIZATION 
Comparative Study of the Reliability and Complexity of Symmetrical and Asymmetrical Cryptosystems for the Protection of Academic Data in the Democratic Republic of Congo
《Journal of Information Security》2024年第3期299-307,共9页Mugaruka Buduge Gulain Jeremie Ndikumagenge Buhendwa Nyenyezi Justin Bulonza Masumbuko Alexis Katho Seba Jacques 
In the digital age, the data exchanged within a company is a wealth of knowledge. The survival, growth and influence of a company in the short, medium and long term depend on it. Indeed, it is the lifeblood of any mod...
关键词：Comparative Study CRYPTOSYSTEMS Symmetric Encryption Asymmetric Encryption 
Wavelet Synchro-squeezing Transform and Dynamic Threshold Supported Symmetrical Power Swing Technique for Modern Transmission Network被引量：1
《Chinese Journal of Electrical Engineering》2024年第2期30-43,共14页Monalisa Biswal Kumar Raja Andanapalli Papia Ray 
Distance relays are prone to symmetrical power swing phenomenon.To mitigate this issue,a dynamic threshold-supported algorithm is proposed.A single logic is not supposed to be secure for all cases.Thus,a supervisory a...
关键词：Distance relays symmetrical power swing wind farm wavelet synchro-squeezing transform(WSST) Euclidean distance 
An isolated symmetrical 2T2R cell enabling high precision and high density for RRAM-based in-memory computing
《Science China(Information Sciences)》2024年第5期283-290,共8页Yaotian LING Zongwei WANG Yuhang YANG Lin BAO Shengyu BAO Qishen WANG Yimao CAI Ru HUANG 
supported by National Key Research and Development Program of China(Grant No.2019YFB2205401);National Natural Science Foundation of China(Grant Nos.61834001,62025401,61927901);Beijing Natural Science Foundation(Grant No.L223004);Beijing Nova Program(Grant No.20220484113);“111”Project(Grant No.B18001).
In-memory computing(IMC),leveraging emerging memories,holds significant promise in overcoming memory limitations and improving energy efficiency.However,the prevailing IMC array structure based on serially connected t...
关键词：RRAM 2T2R multi-level storage weight asymmetry in-memory computing 
Influence of Anteroposterior Symmetrical Aero-Wings on the Aerodynamic Performance of High-Speed Train
《Computer Modeling in Engineering & Sciences》2024年第4期937-953,共17页Peiheng He Jiye Zhang Lan Zhang Jiaqi Wang Yuzhe Ma 
supported by National Key Research and Development Program of China (2020YFA0710902);National Natural Science Foundation of China (12172308);Project of State Key Laboratory of Traction Power (2023TPL-T05).
The running stability of high-speed train is largely constrained by the wheel-rail coupling relationship,and the continuous wear between the wheel and rail surfaces will profoundly affect the dynamic performance of th...
关键词：Anteroposterior symmetrical aero-wing wheel-rail wear aerodynamic lift force ground effect numerical simulation 
Equivalent Impedance Parameter Calculation of Three-phase Symmetrical Loads for Harmonic Source Location
《Journal of Modern Power Systems and Clean Energy》2024年第1期251-260,共10页Yi Zhang Bijie Liu Caihua Lin Zhenguo Shao Yuncong Xu 
supported by the National Natural Science Foundation of China(No.51777035).
The equivalent impedance parameters of loads have been widely used to identify and locate the harmonic sources.However,the existing calculation methods suffer from outliers caused by the zero-crossing of the denominat...
关键词：abc-αβtransformation equivalent impedance parameters of load harmonic source location nonlinear load power quality 
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