Results 21 to 30 of about 118,684 (252)

Analysis of the influence of DC optimizers on photovoltaic production

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2020
Energy efficiency is a key element in the Smart Cities (SC), in which integration of renewable sources is a reality. Small-scale integration is usually implemented with photovoltaic (PV) and solar thermal energy.
Luis Hernández-Callejo   +3 more
doaj   +1 more source

Reliability Importance of Renewable Energy Sources to Overall Generating Systems

open access: yesIEEE Access, 2021
Over the years, probabilistic nature of renewable energy sources (RES) and its influence on power system adequacy have been well studied. However, rather less attention has been paid to the impact of RES unit itself's and its power conversion system's ...
Ming Niu   +6 more
doaj   +1 more source

Study on the properties of MgO-Fe-C bricks as the linings of vanadium-extraction converters

open access: yes工程科学学报, 2016
To extend the service life of MgO-C bricks which used as the linings of vanadium-extraction converters, MgO-Fe-C bricks were fabricated in this study. The service properties of this novel refractory were comparatively investigated between traditional MgO-
LIU Lei   +3 more
doaj   +1 more source

Metal-Supported Solid Oxide Fuel Cells with Exceptionally High Power Density for Range Extender Systems

open access: yesCell Reports Physical Science, 2020
Summary: Solid oxide fuel cells (SOFCs) exhibit potential to become a key technology for future clean energy systems. The metal-supported SOFC exhibits decisive strengths like fast start-up capability, mechanical robustness, and acceptable cost, making ...
David Udomsilp   +11 more
doaj   +1 more source

A Novel Method for Diagnosing Power Electronics Devices Using Elastic Wave Emission

open access: yesEnergies, 2023
This work is an introduction of acoustic emission (AE) signals used in order to detect the malfunction of selected semiconductor elements. The authors proposed the use of internally generated signals (elastic waves) of acoustic emission leading to the ...
Maciej Kozak, Radosław Gordon
doaj   +1 more source

An Overview of Dynamic Inductive Charging for Electric Vehicles

open access: yesEnergies, 2022
Inductive power transfer (IPT) technology offers a promising solution for electric vehicle (EV) charging. It permits an EV to charge its energy storage system without any physical connections using magnetic coupling between inductive coils.
Ahmed A. S. Mohamed   +3 more
doaj   +1 more source

A VSC transmission system using flying capacitor multilevel converters and selective harmonic elimination pWM control [PDF]

open access: yes, 2005
A transmission system based on voltage-source three-level flying capacitor (FC) multilevel converters with selective harmonic elimination pulse-width modulation (SHE-PWM) control is presented in this paper.
Lie Xu   +3 more
core   +1 more source

Modelling approaches for DC-DC converters with switched capacitors

open access: yes, 2015
In this paper we review relevant problems in the modelling of DC-DC converters with switched capacitors. We study several approaches that overcome the exposed modelling difficulties, addressing ideal and nonideal cases and using dynamic equations that ...
Rapisarda, P.   +2 more
core   +1 more source

Validation of a Qualification Procedure Applied to the Verification of Partial Discharge Analysers Used for HVDC or HVAC Networks

open access: yesApplied Sciences, 2023
The insulation condition of HVDC grids consisting of cable systems, GIS, and converters should be monitored by partial discharge (PD) analysers using artificial intelligence (AI) tools for efficient insulation diagnosis.
Carlos Vera   +17 more
doaj   +1 more source

Central Nervous System Tumors Among Infants in Canada: A Report From CYP‐C

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) tumors in infants are rare, pose unique clinical challenges, and lack large‐scale evidence‐based data to guide management. This study seeks to describe CNS tumors in Canadian infants and to compare their outcomes with those of older children.
Samuel Sassine   +17 more
wiley   +1 more source

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