Results 91 to 100 of about 3,598,668 (295)

Dynamic Voltage Restorer Against Balanced and Unbalanced Voltage Sags: Modelling and Simulation

, 2004
This paper presents modelling aspects of several types of Dynamic Voltage Restorer (DVR) working against various voltage sags by simulation in PSCAD/EMTDC.
Saha, Tapan K., Nguyen, P. T.
core  

Novel DSOGI-Based SRF Controller for Power Quality Enhancement in Three-Phase-Grid-Connected Dynamic Voltage Restorer Integrated With Photovoltaic System

Electrica
: This paper presents a DSOGI-based SRF control methodology that regulates load voltages using a dynamic voltage restorer (DVR) with the integration of photovoltaic (PV) systems under severe grid voltage disturbances.
Ravikanth Mallajoshula, I. E. S. Naidu
doaj   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

FEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass, Dana Reichmann, Gábor Erdős   +2 more
wiley   +1 more source

A detection algorithm of voltage sag used in dynamic voltage restorer

Gong-kuang zidonghua, 2013
In view of contradiction between compensation rapidity and anti-interference performance existed in traditional detection algorithm of voltage sag of d-q detection algortihom and Hilbert detection algorithm, a new detection algorithm of voltage sag ...
TIAN Ming, WANG Chang-nan, HE Cheng
doaj  

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Dynamic voltage restorer based on voltage-space-vector PWM control

, 2001
A dynamic voltage restorer (DVR) based on the voltage-space-vector pulsewidth-modulation algorithm is presented. Phase-jump compensation is achieved using a software phase-locked loop and a lead-acid battery energy store.
Zhan, C., Ramachandaramurthy, V. K., Kromlidis, S., Arulampalam, A., Barnes, M., Jenkins, N., Fitzer, C.   +6 more
core   +1 more source

Enhanced Power Quality in Photovoltaic-Fed Dynamic Voltage Restorer Using an Adaptive Grey Wolf Optimization Algorithm for Multilevel Inverter Control [PDF]

E3S Web of Conferences
In this paper, we investigate the power quality improvement in a photovoltaic-fed dynamic voltage restorer (DVR) system by utilizing a multilevel inverter controlled through the Adaptive Grey Wolf Optimization (GWO) algorithm.
Mundher Adnan Myasar, S Srisathirapathy, Bhardwaj Diwakar, Sivasubramanian S., Waikar R.A., Jain Naveen, Senthil Kumar R.   +6 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

RNA‐related functions of BRCA2 in transcription, replication, and genome stability

FEBS Letters, EarlyView.
Beyond its role in homologous recombination, BRCA2 regulates R‐loop homeostasis, DNA–RNA hybrid resolution, RNA polymerase II dynamics, and transcriptional activation. Disruption of any of these functions can contribute to genome instability, inflammatory signaling, and tumorigenesis. BRCA2 is a central tumor suppressor protein best known for its roles
Lucia Alvaro‐Aranda, Sreerama Chaitanya Sridhara, Aura Carreira   +2 more
wiley   +1 more source

Dynamic Voltage Restorer (DVR) for Voltage Sag Mitigation

International Journal on Electrical Engineering and Informatics, 2011
The Dynamic Voltage Restorer (DVR) is fast, flexible and efficient solution to voltage sag problem. The DVR is a power electronic based device that provides three-phase controllable voltage source, whose voltage vector (magnitude and angle) adds to the source voltage during sag event, to restore the load voltage to pre-sag conditions.
Mahmoud A. El-Gammal, Amr Y Abou-Ghazala, Tarek I. El-Shennawy   +2 more
openaire   +1 more source