Results 11 to 20 of about 475,923 (291)
Numerical Analysis of Nonlinear Eigenvalue Problems [PDF]
Journal of Scientific Computing, 2010 We provide a priori error estimates for variational approximations of the ground state eigenvalue and eigenvector of nonlinear elliptic eigenvalue problems of the form $-{div} (A\nabla u) + Vu + f(u^2) u = u$, $\|u\|_{L^2}=1$. We focus in particular on the Fourier spectral approximation (for periodic problems) and on the $ _1$ and $ _2$ finite ...
Cancès, Eric +2 more
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Energies, 2020 In recent years, ultralow-frequency oscillation has repeatedly occurred in asynchronously connected regional power systems and brought serious threats to the operation of power grids.
Sijia Wang +3 more
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Dynamic Interactions between Parallel Grid-Forming Inverters in a Microgrid
Applied Sciences, 2023 The potential instability issues caused by the dynamic interactions between parallel grid-forming inverters are examined. The approach adopted for analysis is s-domain admittance-based eigenvalue and mode shape analysis.
Sulaiman Z. Almutairi
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Applied Sciences, 2020 This paper discusses the numerical solution of the generalized non-Hermitian eigenvalue problem. It provides a comprehensive comparison of existing algorithms, as well as of available free and open-source software tools, which are suitable for the ...
Georgios Tzounas +3 more
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International Journal of Mechanical System Dynamics, 2023 The linear multibody system transfer matrix method (LMSTMM) provides a powerful tool for analyzing the vibration characteristics of a mechanical system.
Jinghong Wang +5 more
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Small signal model and DC side low frequency oscillation analysis of AC/DC distribution network
电力工程技术, 2022 With the rapid development and wide range application of AC/DC distribution network,its stability has also become the focus. The low-frequency oscillation at the DC side in the commissioning stage of an AC/DC distribution network project is analyzed ...
CHEN Qing +5 more
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IEEE Photonics Journal, 2017 One mechanism to generate optical rogue waves is the soliton fusion phenomenon. The impact of initial parameters such as pulse spacing, frequency separation, and phase difference between adjacent soliton shape pulses for soliton fusion phenomenon has ...
Gihan Weerasekara, Akihiro Maruta
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Conditioning analysis of block incomplete factorization and its application to elliptic equations [PDF]
, 1997 The paper deals with eigenvalue estimates for block incomplete fac- torization methods for symmetric matrices. First, some previous results on upper bounds for the maximum eigenvalue of preconditioned matrices are generalized to each eigenvalue.
Axelsson, Owe, Lu, Hao
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Research on Eigenvalue Analysis Method in Multi-Surface Metal Shell Vibratory Gyro
IEEE Access, 2019 The metal shell vibratory gyro is a branch of Coriolis vibratory gyro, which has the advantage of overload resistance, simplify structure, low cost, wide range and long life. This paper focuses on multi-surface metal resonator.
Ning Liu, Zhong Su
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A Comprehensive Investigation on High-Frequency Oscillation in DC Microgrid
IEEE Access, 2021 This paper presents the small-signal stability performance of a dc microgrid (MG) and investigates the interactions between the converter controllers by studying the critical modes.
Mohammad Habibullah +3 more
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