Browsing College of Engineering by Title
Now showing items 7377-7396 of 8222
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Switched Inductor Quazi Switched boost Converter for Nano - Grid Applications
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)Each commercial and residential buildings energy management system can be efficiently/ economically realized by integration of the solar photovoltaics (acting as the renewable power generator), battery energy storage system ... -
Switched mode power supplies for charge-up, discharge and balancing dc-link capacitors of diode-clamped five-level inverter
( IET , 2010 , Article)Inductor switch mode power supplies (SMPS) operated in a discontinuous inductor current mode are used to balance the dc-link capacitor voltages of a diode-clamped five-level inverter. The SMPS concept is extended to charge ... -
Switching angles computations using pso in selective harmonics minimization pwm
( Springer Science and Business Media Deutschland GmbH , 2021 , Book chapter)The preprogrammed pulse width modulation (PWM) method for operating power converters ensures minimum switching loss and at the same time better quality waveform at the output. The Fourier series analysis of the predefined ... -
Switchless power decoupling and switchless leakage current elimination in grid-tied inverters
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)This paper presents a grid-tied single-phase transformerless inverter that eliminates simultaneously the leakage current issue and the double grid frequency power pulsation without additional active circuitry. The control ... -
The Symbolic Realm of Italian Migrants’ Post-WWII Houses in Australia
( Routledge , 2018 , Article)The Post-WWII period witnessed a large immigration flow of Italians towards Australia. This was facilitated by the assisted passage scheme funded by the Italian and Australian governments. Italian migrants, as well as ... -
Symmetric and Asymmetric Multilevel Inverter Topologies With Reduced Device Count
( Institute of Electrical and Electronics Engineers Inc. , 2023 , Article)In this work, two new topologies of single-phase hybrid multilevel inverters for symmetrical and asymmetrical configurations are presented for use in drives and control of electrical machines and the connection of renewable ... -
Symmetric encryption relying on chaotic henon system for secure hardware-friendly wireless communication of implantable medical systems
( MDPI AG , 2018 , Article)Healthcare remote devices are recognized as a promising technology for treating health related issues. Among them are the wireless Implantable Medical Devices (IMDs): These electronic devices are manufactured to treat, ... -
Symmetrical Nine-Phase Drives with a Single Neutral-Point: Common-Mode Voltage Analysis and Reduction
( MDPI , 2022 , Article)Power converters generate switching common mode voltage (CMV) through the pulse width modulation (PWM). Several problems occur in the drive systems due to the generated CMV. These problems can be dangerous to the insulation ... -
Synchrophasor-based backup distance protection of multi-terminal transmission lines
( Institution of Engineering and Technology , 2016 , Article)The distance protection of multi-terminal transmission lines need to be redesigned due to possible changes in the backup protection emanating from probable infeed currents produced from tapped transmission lines. Furthermore, ... -
Synergetic effects of dodecylamine-functionalized graphene oxide nanoparticles on antifouling and antibacterial properties of polysulfone ultrafiltration membranes
( Elsevier , 2021 , Article)The potential use of dodecylamine-functionalized graphene oxide (rGO-DDA) nanoparticles as an antifoulant and antibacterial nanofiller was investigated. GO and rGO-DDA were analyzed using Raman spectroscopy, FTIR, SEM, ... -
Synergistic Behavior of Polyethyleneimine and Epoxy Monomers Loaded in Mesoporous Silica as a Corrosion-Resistant Self-Healing Epoxy Coating
( American Chemical Society , 2022 , Article)Corrosion is a significant problem and is, to a large extent, responsible for the degradation of metallic parts. In this direction, mesoporous silica particles (MSPs) were synthesized by a sol–gel technique and had an ... -
Synergistic effect of concentration and annealing on structural, mechanical, and room-temperature thermoelectric properties of n-type Ga-doped ZnO films
( Elsevier , 2024 , Article)The development of Ga-doped Zinc Oxide (GZO) films from nontoxic, abundant elements using a cost-effective and scalable approach is crucial for the profitability and sustainability of thermoelectric applications. Challenges ... -
Synergistic effect of vanadium pentoxide and graphene oxide in polyvinyl alcohol for energy storage application
( Elsevier Ltd , 2016 , Article)A novel ultra-high-k composite material comprising of polyvinyl alcohol (PVA) as a polymer matrix and vanadium pentoxide (V2O5) and graphene oxide (GO) as fillers have been developed successfully using colloidal processing ... -
Synergistic effects and optimization of nitrogen and phosphorus concentrations on the growth and nutrient uptake of a freshwater Chlorella vulgaris
( Taylor and Francis Ltd. , 2017 , Article)The synergistic effects and optimization of nitrogen (N) and phosphorus (P) concentrations on the growth of Chlorella vulgaris (CCAP 211/11B, CS-42) and nutrient removal have been investigated under different concentrations ... -
Synergistic effects of catalytic co-pyrolysis Chlorella vulgaris and polyethylene mixtures using artificial neuron network: Thermodynamic and empirical kinetic analyses
( Elsevier , 2022 , Article)The catalytic pyrolysis of Chlorella vulgaris, high-density polyethylene (Pure HDPE) and, their binary mixtures were conducted to analyse the kinetic and thermodynamic performances from 10 to 100 K/min. The kinetic parameters ... -
Synoptic analysis of direct contact membrane distillation performance in Qatar: A case study
( Elsevier B.V. , 2015 , Article)The aim of this study is to evaluate a bench scale direct contact membrane distillation (DCMD) performance using flat sheet polytetrafluoroethylene (PTFE) membrane at different inlet flow rates, temperatures, and salinity ... -
The syntax of the Qatari traditional house: privacy, gender segregation and hospitality constructing Qatar architectural identity
( Taylor and Francis Group , 2022 , Article)Socio-cultural factors are amongst the most prominent forces that reshape the development of housing in Qatar when considering its vernacular architectural history. The research study uses space syntax analysis supported ... -
Synthesis & Performance Evaluation of Hybrid Cathode Materials for Energy Storage
( Qatar University Press , 2021 , Poster)Research into the development of novel cathode materials for energy storage applications is progressing at a rapid rate to meet the ever-growing demands of modern society. Amongst various options, batteries are playing a ... -
Synthesis and characterisation of Ni–B/Ni–P–CeO2 duplex composite coatings
( Springer Netherlands , 2018 , Article)Abstract: Binary (Ni–B, Ni–P) and duplex coatings (Ni–B/Ni–P, Ni–B/Ni–P–CeO2) with an inner Ni–B layer were electrodeposited on mild steel substrates. A comparison of the structural, surface, mechanical, and electrochemical ... -
Synthesis and characterization of cobalt hydroxide carbonate nanostructures
( Royal Society of Chemistry , 2017 , Article)Battery-type electrodes of three-dimensional (3D) hierarchical cobalt hydroxide carbonate arrays on Ni foam were fabricated using a hydrothermal method for use in supercapacitors. X-ray diffraction analysis, scanning ...