Results 1 to 10 of about 134 (108)
An Online Event-Based Grid Impedance Estimation Technique Using Grid-Connected Inverters [PDF]
IEEE Transactions on Power Electronics, 2021 An increasing intake of grid-connected inverters could change the characteristics of low voltage networks including the equivalent grid impedance seen by each inverter at its point of common coupling. This can impact the overall performance of the inverters, and thus it becomes necessary for grid-connected inverters to estimate the grid impedance ...
Tamás Kerekes +2 more
exaly +2 more sources
Online Parametric Estimation of Grid Impedance Under Unbalanced Grid Conditions [PDF]
Energies, 2019 Whereas power-electronics-based power systems are expected to enable more integration of renewable energy sources, they could pose crucial challenges including stability issues due to the Thévenin impedance seen by inverters. Such problems could be mitigated by enabling the inverters to estimate the grid impedance by including a grid impedance ...
Graham Town +2 more
exaly +2 more sources
IET Power Electronics, 2020 With the continuous increase in distributed energy resources that are being integrated into the utility grid, it becomes necessary for inverters to estimate the grid impedance online to be used for several applications. Despite the fact that online grid impedance estimation techniques using grid‐connected inverters gained more attention recently, no ...
Graham Town +2 more
exaly +2 more sources
Grid impedance estimation using recursive least squares algorithm
TESEA, Transactions on Energy Systems and Engineering ApplicationsFramework impedance assessment is a vital errand in present day power frameworks for keeping up with soundness, unwavering quality, and proficiency. This paper proposes a strategy for estimating the impedance of a grid by making use of a dataset that ...
Palanisamy N, PRAWIN ANGEL MICHAEL
doaj +2 more sources
Enhanced Virtual Synchronous Machine With Online Grid Impedance Estimation
IEEE Open Journal of Industry ApplicationsIn the growing context of integrating renewable sources and storage systems in the electric grid, the virtual synchronous machine (VSM) concept represents a valid solution to embed grid support functionalities in grid-tied converters.
Alessandro Roveri +3 more
doaj +2 more sources
Grid Impedance Estimator for Active Multisource AC Grids
IEEE Transactions on Smart Grid, 2023 Research, Technological Development and Innovation Program Oriented to the Society Challenges of the Spanish Ministry of Economy and Competitiveness [MCIN/AEI/10.13039/501100011033, MCI-20-PID2019-111051RB-I00]; European Union through ERFD Structural Funds (FEDER) through H2020 Research and Innovation programme [864459 (UE-19-TALENT-864459)]
Andrés Suárez +4 more
openaire +2 more sources
IEEE Access, 2022 Grid impedance plays a significant role in the performance and design considerations of nonlinear devices like Variable Frequency Drive (VFD). VFD operates across domestic, industrial, and residential applications under different grid configurations and ...
Ramesh Pandurangan +2 more
doaj +1 more source
Energies, 2021 This paper proposes a deep-learning-based method for frequency-dependent grid impedance estimation. Through measurement of voltages and currents at a specific system bus, the estimate of the grid impedance was obtained by first extracting the sequences ...
Azam Bagheri +3 more
doaj +1 more source
Improving synchronization stability of grid connected converters by virtual impedance
IET Generation, Transmission & Distribution, 2021 With the increasing penetration of inverter based distributed generation, recent grid codes do not permit the disconnection of converters as soon as fault happens.
Omid Abdoli +2 more
doaj +1 more source
A novel fault monitoring method based on impedance estimation of power line communication equipment
Frontiers in Energy Research, 2023 Due to the close relationship between power grid fault and impedance, there is a significant defect in the use of power line communication (PLC) equipment to monitor and locate power grid faults, which is the lack of real-time impedance information ...
Dong Liang +4 more
doaj +1 more source