Qatar University Institutional Repository: Recent submissions
Now showing items 1081-1100 of 31303
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Optimization of wire electrical discharge turning process: trade-off between production rate and fatigue life
( Springer Science and Business Media Deutschland GmbH , 2021 , Article)Turning by wire electrical discharge machining (WEDT) has been proven as a successful cutting process for producing complex geometries in difficult-to-cut round bars. However, effects of the process factors on fatigue life ... -
A Cross Connected Asymmetrical Switched-Capacitor Multilevel Inverter
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)A Switched-Capacitor Multilevel Inverter (SCMLI) topology is proposed here, which can generate up to fifteen levels with one unit and can be extended further for getting higher levels. The proposed SCMLI has a lesser number ... -
Implementation and Analysis of a 15-Level Inverter Topology with Reduced Switch Count
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)Multilevel inverters remain an area of research interest due to the superior performance against a two-level counterpart. Reducing the switch count and stress on the power electronic switches while maintaining a sinusoidal ... -
Overview and Partial Discharge Analysis of Power Transformers: A Literature Review
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article Review)The high voltage power transformer is the critical element of the power system, which requires continuous monitoring to prevent sudden catastrophic failures and to ensure an uninterrupted power supply. The most common ... -
A Noise-Tolerant Audio Encryption Framework Designed by the Application of S8Symmetric Group and Chaotic Systems
( Hindawi Limited , 2021 , Article)The recent decade has witnessed an exponential surge of digital content, especially multimedia and its applications. The security requirements of these innovative platforms necessitate the significance of enhancing advanced ... -
A Secure and Decentralized Blockchain Based EV Energy Trading Model Using Smart Contract in V2G Network
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)In this work, a secure and decentralized Blockchain based energy trading model for electric vehicles (EVs) using Smart contract that achieves Peer-to-Peer (P2P) transactions between EVs in Vehicle to Grid networks is ... -
Resilience-Oriented Behind-the-Meter Energy Storage System Evaluation for Mission-Critical Facilities
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)Immunization of mission-critical facilities such as hospitals and first responders against power outages is crucial for the operators due to their significant value of the lost load, affecting citizens' lives. This paper ... -
Split Duty Super Boost Converter for High Voltage Applications in a DC Microgrid
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)In order to establish an appropriate interaction of a renewable DC generating source such as Photovoltaic or Fuel cells with a DC microgrid, there is need of some DC-DC converter with suitable attributes and features. ... -
Robust Synthetic Control Charting
( Faculty of Engineering, Universitas Indonesia , 2021 , Article)The proposal of synthetic charting is based on the normality assumption. This assumption, however, is hard to attain in practice. Therefore, it is important to examine how the chart would response under some types of ... -
New Asymmetrical Modular Multilevel Inverter Topology with Reduced Number of Switches
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)In this article, a new single-phase multilevel inverter is introduced with a reduced number of power switches and reduced voltage stress on power switches. The proposed topology consists of four input dc sources and nine ... -
Cryptanalysis of Novel Image Encryption Scheme Based on Multiple Chaotic Substitution Boxes
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)In current years many chaos-based Substitution boxes (S-boxes) have been proposed. Recently, an image encryption technique based on multiple chaotic S-box was offered. This encryption method was based on the concept of ... -
Influence of nanotechnology to combat against COVID-19 for global health emergency: A review
( Elsevier , 2021 , Article Review)Covid 2019 is spreading and emerging rapidly all over the world as a new social disaster. This virus is accountable for the continuous epidemic that causes severe respiratory problems and pneumonia related to contamination ... -
Thermodynamic modeling and comparative analysis of a compressed air energy storage system boosted with thermoelectric unit
( Elsevier , 2021 , Article)Current study represents the thermodynamic modeling and exergy analysis of a compressed air energy storage system boosted with thermoelectric generator (CAES/TEG). To evaluate the studied system, a comparative analysis ... -
Prediction of neural space narrowing and soft tissue injury of the cervical spine concerning head restraint arrangements in traffic collisions
( MDPI AG , 2021 , Article)Common quantitative assessments of neck injury criteria do not predict anatomical neck injuries and lack direct relations to design parameters of whiplash-protection systems. This study aims to provide insights into potential ... -
Cryptanalysis of Internet of Health Things Encryption Scheme Based on Chaotic Maps
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)Many encryption algorithms are designed to decrease the probability of cyberattacks by assuring data security as well as system and participant authentication. However, in the development of computer resources cryptanalytical ... -
Peak Loads Shaving in a Team of Cooperating Smart Buildings Powered Solar PV-Based Microgrids
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)This paper presents a scheduling framework based algorithm for reducing/shaving the peak loads in a team of cooperating microgrids (TCM) powered smart buildings taking advantages of vehicle-to-building (V2B) concept and ... -
A Simple Guide for Plotting a Proper Bifurcation Diagram
( World Scientific , 2021 , Article)In this paper, we propose a guideline for plotting the bifurcation diagrams of chaotic systems. We discuss numerical and mathematical facts in order to obtain more accurate and more elegant bifurcation diagrams. The ... -
Step-by-Step Design and Simulation of Boost Controller for L- and LCL-Filters for EV Fast Charging Systems
( Springer Science and Business Media Deutschland GmbH , 2021 , Conference)Adoption of electric vehicles (EVs) is an important measure for greenhouse gas reduction in many countries worldwide. The increased production of EV in the market will be associated with continuous demand of installing and ... -
Harmonics minimization in multilevel inverter by continuous mode aco technique
( Springer Science and Business Media Deutschland GmbH , 2021 , Conference)Low switching frequency operation of multilevel inverter enables it for applications in high power processing needs. The stepped waveform synthesized from multilevel inverter after Fourier series analysis will result in ... -
Comparison of Direct Torque Control and Indirect Field-Oriented Control for Three-Phase Induction Machine
( Springer Science and Business Media Deutschland GmbH , 2021 , Conference)Induction motors turn out to be the economical workhorses in the industry for the AC motor drive application. To satisfy the steady-state and transient performance specification of AC drives, control techniques are required ...
