Results 21 to 30 of about 2,852,150 (255)
Applied Sciences, 2021 Since the development of renewable power generation, Sub/Super-Synchronous Control Interac-tion (SSCI), has attracted wide attention. Sub/super-synchronous oscillation (SSO) belongs to the category of small signal stability, and its characteristics are ...
Song Ke +7 more
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Control Performance Characterization and Monitoring Scheme for Power Converters in Weak Grids
IEEE Open Journal of Power Electronics, 2023 In weak grids, control performance of power converters is negatively affected by the significantly varied grid impedance, which can easily lead to degradation of anti-harmonic performance, resonances or even system instability.
Jiachen Wang +4 more
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Adaptive Deadbeat Predictive Current Control for PMSM With Feed Forward Method
IEEE Access, 2021 The steady-state error and torque ripple caused by the mismatch or variation of parameters in the deadbeat predictive current control of permanent magnet synchronous motor are presented in this paper.
Kaixuan Yin +4 more
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Influence Research on Stability Margin for Flying Wing Configuration
Hangkong gongcheng jinzhan, 2022 Reduction of trim loss is essential to raise lift-to-drag ratio and enhance flight control performance for flying wing configuration,so the influence on aerodynamic optimization of transonic flying wing configuration is studied based on discrete adjoint ...
CHEN Lili +5 more
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IEEE Access, 2023 The digital controller of the grid-connected converter achieves closed-loop control by sampling key voltage and current signals. High-frequency switching of power electronic switches introduces high-frequency ripples into the signals, which may cause ...
Ma Chunyan +4 more
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Biotropia: The Southeast Asian Journal of Tropical Biology, 2011 Net Primary Production, NPP, is one of the most important variables characterizing the performance of an ecosystem. It is the difference between the total carbon uptake from the air through photosynthesis and the carbon loss due to respiration by living ...
TANIA JUNE, ANDREAS IBROM, GRAVENHORsr
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Nihon Kikai Gakkai ronbunshu, 2016 This paper describes 5-axis centralized feedback control system for a single-rotor helicopter. Optimal control theory is directly applied to 25-state Multiple-Input Multiple-Output (MIMO) analytical linear model of a small-scale unmanned helicopter ...
Naomichi ISOMURA +2 more
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Dynamics Analysis and Chaotic Control of a Fractional-Order Three-Species Food-Chain System
Mathematics, 2020 Based on Hastings and Powell’s research, this paper extends a three-species food-chain system to fractional-order form, whose dynamics are analyzed and explored. The necessary conditions for generating chaos are confirmed by the stability theory of
Lina Wang, Hui Chang, Yuxia Li
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Evidence for Marginal Stability in Emulsions
Physical Review Letters, 2016 We report the first measurements of the effect of pressure on vibrational modes in emulsions, which serve as a model for soft frictionless spheres at zero temperature. As a function of the applied pressure, we find that the density of states D(omega) exhibits a low-frequency cutoff omega*, which scales linearly with the number of extra contacts per ...
Lin, Jie +4 more
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Structural Mechanics of Engineering Constructions and Buildings, 2019 Aims of research. The research is aimed at determining the critical buckling load at which the shell interacting with the soil loses equilibrium stability, and finding the buckling mode of the shell in the linear and nonlinear formulations of the task ...
Sergey B. Kosytsyn, Vladimir Yu. Akulich
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