Results 21 to 30 of about 55,013 (262)

Impedance analysis of current return networks in composite aircraft based on partial element equivalent circuit

open access: yesElectronics Letters, 2021
In order to calculate the impedance of metal return network connected with composite skin, the volume based partial element equivalent circuit method is used to model the return network, and the impedance between the nodes of the return network at ...
Zhangang Yang   +3 more
doaj   +1 more source

Data-Driven Seismic Impedance Inversion Based on Multi-Scale Strategy

open access: yesRemote Sensing, 2022
Seismic impedance inversion is one of the most commonly used techniques for reservoir characterization. High accuracy and high resolution seismic impedance is a prerequisite for subsequent reservoir interpretation.
Guang Zhu   +3 more
doaj   +1 more source

Date-Driven Distribution Network Topology Identification and Line Impedance Estimation

open access: yesZhejiang dianli, 2022
The topological structure and line impedance parameters of low-and medium-voltage distribution networks are the foundation of realizing various functions of the future intelligent distribution networks.
TONG Li   +3 more
doaj   +1 more source

Evaluation of Medium Voltage Network for Propagation of Supraharmonics Resonance

open access: yesEnergies, 2021
Power converters with high switching frequency used to integrate renewable power sources to medium and low voltage networks are sources of emission in the supraharmonic range (2 to 150 kHz).
Shimi Sudha Letha   +3 more
doaj   +1 more source

Direct Matching Antennas in RF Energy Harvesting Systems: A Review

open access: yesMajlesi Journal of Electrical Engineering, 2022
A historical review of Radio Frequency Energy Harvesting (RFEH) Rectenna (Rectifier Antenna) Systems without a matching network is performed, with emphasis on the antenna part.
Vahid Honarvar, Farzad Mohajeri
doaj   +1 more source

Impedance Estimation with an Enhanced Particle Swarm Optimization for Low-Voltage Distribution Networks

open access: yesEnergies, 2019
Many researchers in recent years have studied voltage deviation issues in distribution networks. Characterizing the impedance between consuming nodes in a network is the key to controlling the network voltage.
Daisuke Kodaira   +4 more
doaj   +1 more source

High impedance fault detection and isolation in power distribution networks using support vector machines

open access: yesJournal of King Saud University: Engineering Sciences, 2020
This paper proposes an accurate High Impedance Fault (HIF) detection and isolation scheme in a power distribution network. The proposed scheme utilizes the data available from voltage and current sensors.
Muhammad Sarwar   +5 more
doaj   +1 more source

Feature extraction of arc high impedance grounding fault of low‐voltage distribution lines based on Bayesian network optimisation algorithm

open access: yesIET Cyber-Physical Systems, 2023
In order to accurately extract the fault features of arc high impedance grounding of low‐voltage distribution lines and judge the fault feature types of arc high impedance grounding of low‐voltage distribution lines, a fault feature extraction method for
Jing Sun
doaj   +1 more source

Theory of impedance networks: the two-point impedance andLCresonances [PDF]

open access: yesJournal of Physics A: Mathematical and General, 2006
We present a formulation of the determination of the impedance between any two nodes in an impedance network. An impedance network is described by its Laplacian matrix L which has generally complex matrix elements. We show that by solving the equation L u_a = lambda_a u_a^* with orthonormal vectors u_a, the effective impedance between nodes p and q of ...
Tzeng, W. J., Wu, F. Y.
openaire   +2 more sources

Home - About - Disclaimer - Privacy