Results 31 to 40 of about 13,412,516 (344)

Multi-terminal HVDC grids with inertia mimicry capability [PDF]

open access: yes, 2016
The high-voltage multi-terminal dc (MTDC) systems are foreseen to experience an important development in the next years. Currently, they have appeared to be a prevailing technical and economical solution for harvesting offshore wind energy. In this study,
Gharehpetian, Gevorg B.   +4 more
core   +2 more sources

Grid-Forming Inverters: A Comparative Study of Different Control Strategies in Frequency and Time Domains

open access: yesIEEE Open Journal of the Industrial Electronics Society
Grid-forming inverters (GFMIs) are anticipated to play a leading role in future power systems. In contrast to their counterpart grid-following inverters, which employ phase-locked loops for synchronization with the grid voltage and rely on stable grid ...
Nabil Mohammed   +4 more
semanticscholar   +1 more source

Reduced-Order Modeling and Stability Analysis of Grid-Following and Grid-Forming Hybrid Renewable Energy Plants

open access: yesEnergies
The control methods of energy systems can be categorized into grid-following and grid-forming types. The grid-following control method relies on grid synchronization and is prone to stability issues in weak grid conditions.
Yue Ma, Ning Chen, Luming Ge
doaj   +1 more source

Validation Aspects for Grid-Forming Converters Based on System Characteristics and Inertia Impact

open access: yesEnergies, 2023
Grid-forming converters are considered a key technology for electrical grids with a high share of renewable energy. However, there is a lack of a general, robust and verifiable definition of what constitutes this behaviour. Therefore, this paper presents
Julian Struwe   +2 more
doaj   +1 more source

Wire grid forming apparatus Patent [PDF]

open access: yes, 1961
Apparatus for forming wire grids for electric strain ...
Bonn, J. L., Gardner, D. E.
core   +1 more source

Risk-Averse Model Predictive Operation Control of Islanded Microgrids

open access: yes, 2019
In this paper we present a risk-averse model predictive control (MPC) scheme for the operation of islanded microgrids with very high share of renewable energy sources.
Hans, Christian A.   +4 more
core   +1 more source

Design and control of parallel three phase voltage source Inverters in low voltage AC microgrid [PDF]

open access: yes, 2017
Design and hierarchical control of three phase parallel Voltage Source Inverters are developed in this paper. The control scheme is based on synchronous reference frame and consists of primary and secondary control levels. The primary control consists of
Krami, Nissrine   +4 more
core   +3 more sources

A Review of Current-Limiting Control of Grid-Forming Inverters Under Symmetrical Disturbances

open access: yesIEEE Open Journal of Power Electronics, 2022
Grid-forming (GFM) inverters are recognized as a viable solution to increase the penetration of renewable energy in bulk power systems. However, they are physically different from synchronous generators in terms of overcurrent capability.
Bo Fan   +4 more
semanticscholar   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Characterization of Grid Lines Formed by Laser-Induced Forward Transfer and Effect of Laser Fluence on the Silver Paste Transformation

open access: yesPhotonics, 2023
The investigation of novel approaches for forming solar cell grid lines has gained importance with the rapid development of the photovoltaic industry. Laser-induced forward transfer (LIFT) is a very promising approach for microstructure fabrication.
Yucui Yu   +5 more
doaj   +1 more source

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