Results 51 to 60 of about 53,814 (292)

Suppression of Second-Order Harmonic Current for Droop-Controlled Distributed Energy Resource Converters in DC Microgrids [PDF]

open access: yes, 2020
Droop-controlled distributed energy resource converters in dc microgrids usually show low output impedances. When coupled with ac systems, second-order harmonics typically appear on the dc-bus voltage, causing significant harmonic currents at the ...
Caldognetto, Tommaso   +3 more
core   +1 more source

Synchronization Stability Enhancement of Grid-Following Converter Under Inductive Power Grid

open access: yesIEEE Transactions on Energy Conversion, 2023
The loss of synchronization (LOS) is a main issue for dynamic behavior of grid-following converter (GFC) under inductive power grid. This letter reveals the underlying mechanism of insufficient damping or even negative damping during grid disturbance, and analyzes how the initial speed of angle-difference between PLL output and grid voltage affects the
Bin Hu   +6 more
openaire   +2 more sources

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Analysis of inertia damping characteristics of GFM wind turbines

open access: yesZhejiang dianli
Grid-forming (GFM) converters, known for their superior inertia damping characteristics, have emerged as a center research focus in the renewable energy sector. As a result, the damping characteristics of GFM wind power converters are first examined. The
WU Shuangxi   +6 more
doaj   +1 more source

Using High-Bandwidth Voltage Amplifier to Emulate Grid-Following Inverter for AC Microgrid Dynamics Studies

open access: yesEnergies, 2019
AC microgrid is an attractive way to energize local loads due to remotely located renewable generation. The AC microgrid can conceptually comprise several grid-forming and grid-following power converters, renewable energy sources, energy storage and ...
Tuomas Messo   +8 more
doaj   +1 more source

New Fault Detection Algorithm for an Improved Dual VSM Control Structure With FRT Capability

open access: yesIEEE Access, 2021
Grid forming converters are a promising solution to enhance the stability of electrical networks with a high penetration of renewable generation. Virtual Synchronous Machines (VSM) are a particular type of grid forming converter, which can be implemented
Ahmed Abdelrahim   +4 more
doaj   +1 more source

Large‐scale bidirectional arrayed genetic screens identify OXR1 and EMC4 as modifiers of αSynuclein aggregation

open access: yesFEBS Open Bio, EarlyView.
Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane   +11 more
wiley   +1 more source

Transient Synchronization Stability Analysis of Parallel-Connected Grid-Forming Converters and Grid-Following Stations

open access: yesIEEE Access
In novel power systems, complex coupling among stations and devices with diverse synchronization mechanisms profoundly impacts system stability.
Xinyu Guo   +4 more
doaj   +1 more source

Review on grid-forming converter control methods in high-proportion renewable energy power systems

open access: yesGlobal Energy Interconnection, 2022
Grid-forming (GFM) converters can provide inertia support for power grids through control technology, stabilize voltage and frequency, and improve system stability, unlike traditional grid-following (GFL) converters.
Yuting Teng   +5 more
doaj   +1 more source

Symmetrical angle switched single-phase and three-phase rectifiers: application to micro hydro power plants [PDF]

open access: yes, 2019
Micro-size hydro power plants are commonly used at remote areas to supply islanded AC microgrids. A typical way to control grid frequency is to manipulate active power dissipated in ballast loads by AC/AC converters.
Bory Prevez, Henry   +3 more
core  

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