Results 151 to 160 of about 1,100,817 (204)

Adaptive FRT Improvement of DC-Link Voltage-based VSGs in Weak Power Grids

open access: yesMuthanna Journal of Engineering and Technology
The integration of renewable energy sources (RESs) in modern power systems (MPSs) has been increased. This integration has led to a quick shift in the control approaches of grid connected power converters (GCPCs). Traditionally, Grid-Following Inverters
ahmed abdulrahman   +2 more
doaj  

Grid Integration of Renewable Energy Sources into Weak Grids

open access: yes, 2022
This dissertation investigates the grid integration of converter-based renewable energy sources (RESs) into weak grids. For this purpose, a grid-following inverter (GFLI) is chosen as the RES, and its stability is analyzed. Additionally, the thesis proposes a method for the stability enhancement of the GFLI.
Milad Zarif Mansour (13016099)
openaire   +2 more sources

Stability Control for Wind in Weak Grids

IEEE Transactions on Sustainable Energy, 2019
4 Hz oscillations and 30 Hz oscillations have been observed in real-world wind farms with weak grid interconnections. Such stability issues limit wind power delivery. This paper proposes mechanism-based feedback control strategies suitable for vector control based voltage source converters employed in Type-3 and Type-4 wind to enhance the overall ...
Zhixin Miao, Yin Li, Lingling Fan
exaly   +2 more sources

Grid Impedance Impact Analysis of the Weak Grid-Tied VSC

2021 IEEE Green Technologies Conference (GreenTech), 2021
The grid impedance is widely recognized as the key factor to the stability of the grid-tied power electronic devices. However, the influence of the grid impedance ratio is always neglected due to the assumption that grid reactance is much large than grid resistance.
Hong Hu   +9 more
openaire   +1 more source

Connection of inverters to a weak grid

2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018), 2002
Connection of an inverter to export power to the mains for a stiff supply is well understood. This paper examines the dynamics of power export to a weak grid. In this case the local bus angle changes for changes in export power which interferes with the process of synthesizing the inverter voltage.
G. Ledwich, H. Sharma
openaire   +1 more source

Structural Weaknesses in the Open Smart Grid Protocol

2015 10th International Conference on Availability, Reliability and Security, 2015
The Open Smart Grid Protocol (OSGP) is currently deployed in various countries in large-scale Smart Metering projects. The protocol was developed by the OSGP Alliance and published as a standard by the European Telecommunications Standards Institute (ETSI).
Klaus Kursawe, Christiane Peters
openaire   +3 more sources

The Resonance Suppression for Parallel Photovoltaic Grid-connected Inverters in Weak Grid

International Journal of Automation and Computing, 2017
Obvious resonance peak will be generated when parallel photovoltaic grid-connected inverters are connected to the weak grid with high grid impedance, which seriously affects the stability of grid-connected operation of the photovoltaic system.To overcome the problems mentioned above, the mathematical model of the parallel photovoltaic inverters is ...
Qiu-Xia Yang   +3 more
openaire   +1 more source

Control of a grid connected converter during weak grid conditions

2016 IEEE 7th International Symposium on Power Electronics for Distributed Generation Systems (PEDG), 2016
The focus on renewable energy sources have been increasing since the late 80s in Denmark. Especially focus on wind power has been increasing, with implementation of big on- and offshore wind farms. However, when installing the wind farms, these are often placed distant from the utility grid, like the case for offshore wind turbines.
Lorenzen, Søren Lund   +2 more
openaire   +1 more source

Model Predictive Control of Grid Side Converter in The Weak Grid

2019 IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics (PRECEDE), 2019
The grid side converter (GSC) needs proper controller design when connected to the weak grid, otherwise it becomes unstable due to the overlook of grid impedance dynamic. Although the phase locked loop (PLL) will cause the instability of the interconnected system that consists of GSC and inductive grid due to its negative damping characteristic, the ...
Liang Chen   +4 more
openaire   +1 more source

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