Results 111 to 120 of about 2,029 (306)

DC Link Voltage Balancing for Enhanced Performance in Multilevel Inverter-based Distribution Static Synchronous Compensator

Majlesi Journal of Electrical Engineering
This article describes the use of a sliding mode controller (SMC) in conjunction with an integral (PI) controller for a MLI based DSTATCOM to balance dc side voltage, control a cascaded H-bridge inverter, and compensate for power quality issues related ...
Kalagotla Chenchireddy, Mulla Gouse Basha, Vislavath Kumar, Shabbier Ahmed Sydu   +3 more
doaj   +1 more source

Balancing asymmetrical load using a static var compensator [PDF]

, 2015
Power electronic controllers are employed in the transmission and distribution levels of the power systems. In transmission level applications, Flexible AC Transmission System (FACTS) controllers, consist of shunt and series static compensators, are ...
Reza, M.,, Bongiorno, Massimo,, Srivastava, K., Alsulami, A., Bongiorno, Massimo, Srivastava, K.,, Alsulami, A.,, Reza, M.   +7 more
core   +1 more source

Role of Intrinsic Electron Trapping in Negative Charging of Amorphous Alumina

Advanced Functional Materials, EarlyView.
Intrinsic electron trapping in amorphous Al2O3 is examined using hybrid‐DFT models spanning a wide density range. Both spontaneous and thermally activated trapping are identified, with pronounced spontaneous localization in dense, partly crystallized structures.
Jack W. Strand, Kaja H. Hiorth, David Gao, Valeri Afanas'ev, Jaakko Akola, Alexander L. Shluger   +5 more
wiley   +1 more source

Improving the power quality of low-voltage AC-DC residential-industrial microgrids using a DSTATCOM based on improved three-level coupled-inductor ZSIs

International Journal of Electrical Power & Energy Systems
This paper introduces a novel approach to enhance power quality in distribution networks connected to low-voltage AC-DC residential-industrial microgrids.
Shirin Besati, Mahyar Abasi, Ali Mosallanejad, Madhav Manjrekar   +3 more
doaj   +1 more source

An 'active' passive-filter topology for low power DC/AC inverters [PDF]

, 2011
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis presents a new output passive filter for voltage source inverter applications which is based on a shunt connected single tuned filter topology ...
Arman, Mahmoud Fayez
core  

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source

Improving Power Quality of a Hybrid Grid-Connected Photovoltaic–Wind Microgrid Using Shunt Active Power Filter and Distribution Static Synchronous Compensator

International Transactions on Electrical Energy Systems
Unbalanced voltage and harmonics are major challenges in a microgrid. Single- and two-phase loads and short circuit can make unbalanced voltage. Besides, nonlinear loads create harmonic components in the grid.
Ehsan Akbari, Abbas Zare Ghaleh Seyyedi
doaj   +1 more source

Five-Level Flying Capacitor Converter used as a Static Compensator for Current Unbalances in Three-Phase Distribution Systems [PDF]

, 2019
This thesis presents and evaluates a solution for unbalanced current loading in three-phase distribution systems. The proposed solution uses the flying capacitor multilevel converter as its main topology for an application known as Unbalanced Current ...
Franceschi, Rafael
core   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

Swelling‐Programmed Topographical Guidance for Dynamic Spheroid Self‐Assembly via a Mechanochemical Hydrogel Niche

Advanced Functional Materials, EarlyView.
A swelling‐programmed micropatterned hydrogel guides adherent cells through a controlled transition from cell–matrix anchoring to cadherin‐mediated cell–cell compaction, enabling rapid assembly of high‐viability spheroids with defined size and morphology.
Han Gyeol Nam, Seon Yeong Chae, Young Woo Kwon, Hye Jin Heo, Hye Rin Lee, Ji Hyeok Lee, Dong‐Wook Han, Yun Hak Kim, Suck Won Hong   +8 more
wiley   +1 more source