Results 261 to 270 of about 98,717 (327)

Impact of Grid Faults on Grid-Following Converter Controller Operation and Phase Instability

2024 13th International Conference on Renewable Energy Research and Applications (ICRERA)
Currently, most Inverter-Based Resources (IBRs) connected to power systems use Grid Following Inverter (GFL) models. However, as the penetration of IBRs in power systems increases, concerns about inverter control issues in weak grids are growing ...
Inchan Hong, Yeuntae Yoo, Seungmin Jung
openaire   +2 more sources

Transient Stability Analysis and Enhancement of Grid-Forming and Grid-Following Converters

IEEE Journal of Emerging and Selected Topics in Industrial Electronics
The increasing prevalence of grid-following (GFL) converters in modern power systems raises concerns about transient stability, mainly stemming from loss of synchronization (LOS).
Chenhang Xu, Zhixiang Zou, Jiajun Yang, Zheng Wang, Wu Chen, Giampaolo Buticchi   +5 more
openaire   +2 more sources

Small-Signal Stability Assessment of Heterogeneous Grid-Following Converter Power Systems Based on Grid Strength Analysis

IEEE Transactions on Power Systems, 2023
The increasing penetration of renewable resources into the power network through grid-following converters has increased the risks of small-signal instability resulting from the interaction between the converters and the power network.
Yuhan Zhou, H. Xin, Di Wu, Feng Liu, Zhiyi Li, Guanzhong Wang, Hui Yuan, Ping Ju   +7 more
semanticscholar   +1 more source

Grid-Following and Grid-Forming Converter Control Comparison Under Fault Conditions

2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia), 2021
Traditionally control of grid-connected converters is based on a grid-following structure, where a Phase Locked Loop is responsible for tracking the angle of the AC grid. However, such control structure leads to stability problems for weak and low inertia grids. Then, a grid-forming control structure is presented as a potential solution.
Carlos Collados-Rodriguez, Marc Cheah-Mane, Francisco-Javier Cifuentes-Garcia, Eduardo Prieto-Araujo, Oriol Gomis-Bellmunt   +4 more
openaire   +1 more source

Complex Circuit Modeling Methodology and Its Application to Depict Multifrequency Coupling Effect of Asymmetric Grid-Following Converter

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2023
Due to the multifrequency coupling effect (m-FCE), precise modeling and effective stability assessment of an asymmetric grid-following converter (GFC)-based ac system are complex to achieve. Traditional small-signal modeling methods and recently reported
Yuancan Xu, Yandong Chen, Wenhua Wu, S. Liao, Zili Wang, An Luo, Saddam Aziz, J. Guerrero   +7 more
semanticscholar   +1 more source

Small-Signal Stability Analysis of Grid-Following Converter via Inner/Outer SISO Feedback Loops

Compel, 2022
Multiple-input multiple-output (MIMO) frequency-domain models are often used to analyse the small-signal stability of grid-connected converters. The limitations of standard MIMO analysis tools have spurred the development of methods that reduce systems ...
Luke Woolcock, Robert Schmid
semanticscholar   +1 more source

Modelling and Analysis of Damping Characteristics of Grid Following Converter

IEEE Power & Energy Society General Meeting, 2022
The synchronization instability is one of the main issues for the operation of grid-following converter (GFL). Analogizing to the synchronous generator mechanism, GFL synchronism can be modelled in the form of swing equation.
Q. Shen, Guanqun Li, Hua Ye, Yongsheng Xie, Junru Chen   +4 more
semanticscholar   +1 more source

Real-time Grid Impedance Identification for Synchronization Stability Control in Grid-following Converter

2022 IEEE 5th International Electrical and Energy Conference (CIEEC), 2022
The synchronization instability is one of the serious problems for grid-following converter (GFL). Real-time identification of AC grid impedance enables improves the application of adaptive current injection synchronous stabilization control method in ...
Liangcheng Cheng, Hua Ye, Ting Wang, Xin Dong, Yanran Li   +4 more
semanticscholar   +1 more source

Transient Synchronization Stability Analysis of Grid-Following Converter Considering the Coupling Effect of Current Loop and Phase Locked Loop

IEEE transactions on energy conversion
With the increasing penetration of voltage source converters (VSC) in the modern power grid, the transient stability of grid-following converters has attracted extensive attention.
Chao Wu, Yashi Lyu, Yong Wang, F. Blaabjerg   +3 more
semanticscholar   +1 more source

Optimal VSG BESS Sizing for Improving Grid-Following Converter Stability Under Various Dispatch Scenarios and Grid Strengths

IEEE Transactions on Sustainable Energy
As renewable energy integration increases, ensuring stability of Inverter-Based Resources (IBRs) in weak grids is crucial, as grid-following (GFL) converters often become unstable under such conditions.
Yunda Xu, Ruifeng Yan, T. Saha
semanticscholar   +1 more source