Results 1 to 10 of about 36 (35)
Energies, 2022 This paper proposes a rational approximation-based approach to find positive real parameters for the extended Debye model (EDM), aimed at condition assessment of insulation systems of power transformers.
Giovanni Hernandez, Abner Ramirez
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Macromodeling High-Speed Circuit Data Using Rational Krylov Fitting Method
Energies, 2021 This paper presents the modeling of high speed distributed networks characterized by S-parameters frequency data using the rational Krylov fitting (RKFIT) algorithm. Numerical examples illustrate the effectiveness of the method to compute stable rational
Mohamed Sahouli, Anestis Dounavis
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Mathematics, 2022 Rational function approximation is commonly used to fit the transmission line impedance over a wide frequency range. Nevertheless, it is computationally costly and challenging to implement in practical applications due to the high number of ...
Hosam Alharbi +2 more
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Field data-based mathematical modeling by Bode equations and vector fitting algorithm for renewable energy applications. [PDF]
PLoS ONE, 2018 The power system always has several variations in its profile due to random load changes or environmental effects such as device switching effects when generating further transients.
A H Sabry +4 more
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A Modified Vector Fitting Technique to Extract Coupling Matrix from S-parameters [PDF]
Radioengineering, 2023 In this paper, a modified vector fitting technique to extract coupling matrix from S-parameters is introduced. This work allows designers to extract the coupling matrix of different or any pre-defined topologies from the simulated or measured S-parameter
C. L. Ng +3 more
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IEEE Access, 2022 Several approaches to calculate the ground-return impedance and admittance matrices are proposed in the literature. Carson’s approach assumes a lossy ground modeled by frequency-independent conductivity where displacement currents and non ...
Jaimis Sajid Leon Colqui +4 more
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Analysis of Very Fast Transients Using Black Box Macromodels in ATP-EMTP
Energies, 2020 Modelling for very fast transients (VFTs) requires good knowledge of the behaviour of gas insulated substation (GIS) components when subjected to high frequencies. Modelling usually takes the form of circuit-based insulation coordination type studies, in
Jonathan James +4 more
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The Journal of Engineering, 2019 Considering the electromagnetic transient (EMT) simulation for a large power system is complicated and impractical, a feasible solution is to model the area not of interest (external system) as a frequency-dependent network equivalent circuit by vector ...
Chenxuan Wang, Zhen Wang
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Advances in Electrical and Computer Engineering, 2011 Transfer function (TF) is an acknowledged method for power transformer mechanical faults detection. However the past published works mostly discovered how to specify the faults levels and paid less attention to detection of the type of faults using ...
RAHIMPOUR, E., VAKILIAN, M., BIGDELI, M.
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International Journal of Antennas and Propagation, 2017 Diffraction nonlocal boundary condition (BC) is one kind of the transparent boundary condition which is used in the finite-difference (FD) parabolic equation (PE).
Ruidong Wang +3 more
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