Results 41 to 50 of about 277,373 (307)

Coordinated voltage control for improved power system voltage stability by incorporating the reactive power reserve from wind farms

Frontiers in Energy Research, 2023
The absorption and output characteristics of reactive power of the doubly-fed induction generator (DFIG) greatly influence the voltage stability of PCC (Point of Common Coupling) where the wind farms are integrated into the bulk power grid.
Qunying Liu, Yingxing Song, Yazhou Jiang, Yin Xu, Shuheng Chen   +4 more
doaj   +1 more source

Model predictive control for reactive power management in transmission connected distribution grids

, 2022
S.419-423In this work a multi-objective model predictive control for reactive power management in transmission connected distribution grids with high share of wind power is presented.
Venzke, A., Hennig, T., Hofmann, L., Stock, D.S.   +3 more
core   +1 more source

Pliant active and reactive power control for grid-interactive converters under unbalanced voltage dips [PDF]

, 2010
During voltage dips continuous power delivery from distributed generation systems to the grid is desirable for the purpose of grid support. In order to facilitate the control of inverter-based distributed power generation adapted to the expected change ...
Hendrix, M.A.M.; id_orcid, Duarte, JL Jorge, Hendrix, MAM Marcel, Duarte, J.L., Duarte, J.L.; id_orcid, Wang, F., Hendrix, M.A.M., Wang, F Fei   +7 more
core   +1 more source

Research on Reactive Power Coordination Control of Urban Rail Transit Power Monitoring System

Chengshi guidao jiaotong yanjiu
[Objective] The power supply system of urban rail transit mainly relies on the SVG (static var generator) or reactors in the 110 kV main substation for centralized reactive power compensation. The current control mode does not fully consider the reactive
ZOU Dayun, ZHAO Jiawei, XUE Zhong, WEI Zhixing, ZHANG Changkai, XIE Kai   +5 more
doaj   +1 more source

Comparative Review of Reactive Power Estimation Techniques for Voltage Restoration

Energies
With the focus on the growing concern of voltage instability and its inherent risks connected to blackouts, this study addresses the importance of Volt/VAR control (VVC) in maintaining voltage stability, optimizing power factor, and reducing losses.
Natanael Faleiro, Raul Monteiro, André Fonseca, Lina Negrete, Rogério Lima, Jakson Bonaldo   +5 more
doaj   +1 more source

Security constrained reactive power dispatch in electrical power systems [PDF]

, 1990
With the increased loading and exploitation of the power transmission system and also due to improved optimised operation, the problem of voltage stability and voltage collapse attracts more and more attention .
Chebbo, Ahmad Mustapha
core  

Power Quality Improvement Wind Energy System Using Cascaded Multilevel Inverter [PDF]

, 2013
In this paper, a wind energy conversion system based on a cascaded H-bridge multilevel inverter (CHBMLI) topology has been proposed to be used for the grid interface of large split winding alternators (SWAs).
Kumar, A. S. (A), J.S., Sathiyanarayanan, Sathiyanarayanan, J. S. (J), A. S. Kumar, J.S. Sathiyanarayanan, A. S., Kumar   +5 more
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Control of the Reactive Power Supplied by a Matrix Converter

IEEE Transactions on Energy Conversion, 2009
In this paper, the control of the reactive power supplied by a matrix converter to a grid is presented. A matrix converter is used to feed an induction generator using a space vector modulation algorithm. An input current observer, implemented using an estimation of the modulation matrix, is used in a nonlinear controller that regulates the reactive ...
Cardenas, Roberto, Pena, Ruben, Clare, Jon, Wheeler, Patrick   +3 more
openaire   +5 more sources

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source