Results 91 to 100 of about 21,213 (304)

Investigating the effects of current thresholds on phase jump limits and withstand capabilities in grid‐forming converters

open access: yesIET Generation, Transmission & Distribution
The inherent constraints of grid‐forming converters affect their ability to maintain voltage source characteristics within a specific operational range.
Ziqian Zhang   +3 more
doaj   +1 more source

Automatic power sharing modification of P/V droop controllers in low-voltage resistive microgrids [PDF]

open access: yes, 2012
Microgrids are receiving an increasing interest to integrate the growing share of distributed generation (DG) units in the electrical network. For the islanded operation of the microgrid, several control strategies for the primary control have been ...
De Kooning, Jeroen   +4 more
core   +2 more sources

SI‐bioATRP in Mesoporous Silica for Size‐Exclusion Driven Local Polymer Placement

open access: yesAdvanced Functional Materials, EarlyView.
An enzyme‐catalyzed surface‐initiated atom transfer radical polymerization (SI‐bioATRP) of an anionic monomer within mesoporous silica particles, using hemoglobin as a catalyst, allows for controlling the location of the formed polymer via size‐exclusion effects between the nanopores and the biomacromolecules, thereby opening routes to functional ...
Oleksandr Wondra   +8 more
wiley   +1 more source

Megawatt-level converter grid-forming control technology by adopting MPC for medium voltage distribution network

open access: yesFrontiers in Energy Research
The grid-forming control (GFM) is treated as controlled voltage sources, which can enhance synchronize stability in weak grid case. However, the dynamic response of existing GFM method is limited, and the transient overcurrent in fault is still not ...
Shangke Liu   +4 more
doaj   +1 more source

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

open access: yesAdvanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park   +3 more
wiley   +1 more source

Grid-Forming Controller for Multi DC/AC Converter Topology Supplying 25 kVAC Single-Phase Railway Catenary From 3 kVDC

open access: yesIEEE Open Journal of the Industrial Electronics Society
One of the primary challenges associated with single-phase AC railway electrification is the unbalance created within the three-phase supply grid. This problem does not arise in DC electrification systems.
Roberto Martin Lopez   +4 more
doaj   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

open access: yesAdvanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado   +6 more
wiley   +1 more source

Adaptive hybrid synchronization control of grid-connected converters in renewable power plants and its small-signal stability analysis

open access: yesZhejiang dianli
As the capacity of renewable power plants connected to the grid increases year by year, optimizing the control strategies for their converters becomes crucial for enhancing system stability.
GONG Kai   +5 more
doaj   +1 more source

Resistive anode image converter [PDF]

open access: yes, 1976
The invention of an apparatus for imaging soft X-ray and ultraviolet electromagnetic radiation and charged particles was described. The apparatus includes a pair of microchannel electron multiplier plates connected in a cascaded chevron configuration ...
Lampton, M. L., Paresce, F.
core   +1 more source

Joint CFO and Channel Estimation in Millimeter Wave Systems with One-Bit ADCs

open access: yes, 2017
We develop a method to jointly estimate the carrier frequency offset (CFO) and the narrowband channel in millimeter wave (mmWave) MIMO systems operating with one-bit analog-to-digital converters (ADCs).
Heath Jr, Robert W.   +1 more
core   +2 more sources

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