Results 251 to 260 of about 1,941,585 (293)

Synchronous condenser applications for a weak grid

2023
This panel session discusses the application of synchronous condensers to improve power system performance, particularly systems with a high proportion of inverter based sources. Presentations in this panel session: - Introduction to panel: Update on SynCon Interest Group Activity (23PESGM4014) - SynCon parameter study: Different transient and sub ...
K. Chen, L. Fan. R. Neumann, H. Steins, A. Crosby, N. Modi   +4 more
openaire   +1 more source

Regulator reconstruction strategy of grid-connected inverter in weak grid

2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia), 2016
In order to suppress LCL inherent resonance and grid background harmonic problems, virtual impedance control based on capacitor current feedback and grid voltage feedforward control strategies are typically introduced in grid-connected inverters. However, the inverter control strategy can't make the system operate stably in a weak grid.
null Qinglin Zhao, null Haopu Zhang, null Wenlu Song, null Xiaoyi Li, null Qiuxia Yang   +4 more
openaire   +1 more source

Research on Self-synchronization Strategy of Grid-connected Inverters in Weak Power Grid

IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society, 2020
In order to ensure good power quality, the grid-connected inverter mostly uses phase-locked loop (PLL) to maintain synchronization with large power grid. But the PLL will cause a negative-impact on the stability of grid-connected inverter under weak grids. The paper analyzes the equivalent impedance of the PLL under the weak grid firstly.
Xuemei Zheng, Jiachen Song, Haoyu Li 0001   +2 more
openaire   +1 more source

Control of Grid-Tied Inverter with L Filter in Weak Grid Considering Grid Impedance and Harmonics

IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018
Inductor filter is widely used in grid-tied inverters. If an inverter with inductor filter operates in weak grid condition, voltage measurement error may exist due to the voltage sensor delay and the voltage drop on grid impedance. This can further lead to errors in the phase lock loop (PLL) and even system instability.
Hao Tu, Bei Xu, Siyuan Chen, Xinyu Liang, Yuhua Du, Srdjan M. Lukic   +5 more
openaire   +1 more source

An Improved Grid Voltage Feedforward Compensation Scheme of Grid-Connected Inverter in Weak Grid

2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC), 2018
The grid voltage feedforward control strategy is widely used in the grid-connected inverter, aiming to reduce the disturbance of grid voltage distortion and suppress the impulse current of inverter at startup. However, an extra positive feedback channel will be introduced into the current control loop in weak grid, bringing low harmonics and even ...
Ming Li, Xing Zhang, Haizheng Zhang, Hang Zhang, Weiqi Guan   +4 more
openaire   +1 more source

Synchronization Stability of 3-phase Grid Connected Inverters in Weak Grids

IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society, 2022
Sugoto Maulik, Vinod John
openaire   +2 more sources

COMPARATIVE STABILITY ASSESSMENT OF GRID-FOLLOWING AND GRID-FORMING VSCS IN WEAK GRIDS

IET Conference Proceedings, 2021
L. Yuan, Z. Liu, J. Huang, F. Qiao, H. Yu, T. Wen   +5 more
openaire   +1 more source

Grid-Forming Converters in Weak Grids – The Case of a Mediterranean Island

2019
The existing power network of a Mediterranean island is used as test bed for the study of grid-forming converter dynamics in weak grid conditions. The control scheme adopted for the converter falls in the category of the so called virtual synchronous machines (VSM). Particular attention is committed to the interaction between the converter controls and
R. Musca, G. Zizzo, M. Bongiorno
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The Stability Performance Enhancement of Grid-Connected Inverters in Weak Grid

The thesis presents an integrated estimation and control framework to enhance the stability, synchronisation, and fault ride-through capabilities of grid-following (GFL) inverters in critically weak grids. To overcome conventional Phase-Locked Loop (PLL) instability under high grid impedance, the research proposes a Modified Virtual Impedance-PLL (MVI ...
openaire   +1 more source

Hardware Demonstration of Weak Grid Oscillations in Grid-Following Converters

2021 North American Power Symposium (NAPS), 2021
Li Bao, Lingling Fan, Zhixin Miao, Zhengyu Wang   +3 more
openaire   +1 more source