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Contemporary Trends in Power Electronics Converters for Charging Solutions of Electric Vehicles

CSEE Journal of Power and Energy Systems 2020年第4期6卷 911-929页

作者： salman habib Muhammad Mansoor Khan Farukh Abbas Abdar Ali Muhammad Talib Faiz Farheen Ehsan Houjun Tang School of Electronic Information and Electrical Engineeringand Key Laboratory of Control of Power Transmission and ConversionShanghai Jiao Tong UniversityShanghai 200240China Department of Electrical Engineering University of Engineering and TechnologyLahore 54890Pakistan School of International and Public Affairs Shanghai Jiao Tong UniversityShanghai 200240China

Electrifying the transport sector requires new possibilities for power electronics converters to attain reliable and efficient charging solutions for electric vehicles(EVs).With the continuous development in power electronics converters,the desire to reduce gasoline consumption and to increase the battery capacity for more electric range is achievable for EVs in the near *** main interface between the power network and EV battery system is a power electronics converter,therefore,there is a considerable need of new power converters with low cost and high reliability for the advance charging mechanism of *** rapid growth in power converter topologies brings substantial opportunities in EV charging *** view of this fact,this paper investigates the significant aspects,current progress,and challenges associated with several power converters to suggest further improvements in charging systems of *** particular,an extensive analysis of front-end as well as back-end converter configurations is ***,the comparative properties of resonant converter topologies along with other DCDC converters are discussed in ***,isolated,and non-isolated topologies with soft switching techniques are classified and rigorously analyzed with a view to their respective issues and *** is foreseen that this paper would be a valuable addition and a worthy source of information for researchers exploring the area of power converter topologies for charging solutions of EVs.

关键词： Batteries chargers converter topologies electric vehicles(EVs) power electronics plug-in hybrid electric vehicles(PHEVs)

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A framework for stochastic estimation of electric vehicle charging behavior for risk assessment of distribution networks

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Frontiers in Energy 2020年第2期14卷 298-317页

作者： salman habib Muhammad Mansoor KHAN Farukh ABBAS Muhammad NUMAN Yaqoob ALI Houjun TANG Xuhui YAN Key Laboratory of Control of Power Transmission and Transformation of the Ministry of Education School of ElectronicInformation and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Department of Electrical Engineering University of Engineering and TechnologyLahore 54890Pakistan State Grid Liyang Power Supply Company Liyang 213300China

Power systems are being transformed to enhance the *** paper contributes to the knowledge regarding the operational process of future power networks by developing a realistic and stochastic charging model of electric vehicles(EVs).Large-scale integration of EVs into residential distribution networks(RDNs)is an evolving issue of paramount significance for utility *** voltages prevent effective and reliable operation of *** EV loads require a stochastic approach to predict EVs charging demand,consequently,a probabilistic model is developed to account several realistic aspects comprising charging time,battery capacity,driving mileage,state-of-charge,traveling frequency,charging power,and time-of-use mechanism under peak and off-peak charging *** attempt is made to examine risks associated with RDNs by applying a stochastic model of EVs charging *** output of EV stochastic model obtained from Monte-Carlo simulations is utilized to evaluate the power quality parameters of *** equipment capability of RDNs must be evaluated to determine the potential *** specifications of RDNs including voltage unbalance factor,voltage behavior,domestic transformer limits and feeder losses are assessed in context to EV charging scenarios with various charging power levels at different penetration ***,the impact assessment of EVs on RDNs is found to majorly rely on the type and location of a power network.

关键词： electric vehicles(EVs) residential distribution networks(RDNs) voltage unbalance factor(VUF) state-of charge(SOC) time-of-use(TOU)

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Optimal Resource Allocation in Fog Computing for Healthcare Applications

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Computers, Materials & Continua 2022年第6期71卷 6147-6163页

作者： salman Khan Ibrar Ali Shah Nasser Tairan habib Shah Muhammad Faisal Nadeem Department of Computer Software Engineering University of Engineering and TechnologyMardan23200Pakistan Department of Computer Science College of Computer ScienceKing Khalid UniversityAbhaK.S.A Informatics Complex H-8Islamabad44000Pakistan

In recent years,the significant growth in the Internet of Things(IoT)technology has brought a lot of attention to information and communication *** IoT paradigms like the Internet of Vehicle Things(IoVT)and the Internet of Health Things(IoHT)create massive volumes of data every day which consume a lot of bandwidth and ***,to process such large volumes of data,the existing cloud computing platforms offer limited resources due to their distance from IoT ***,cloudcomputing systems produce intolerable latency problems for latency-sensitive real-time ***,a newparadigm called fog computingmakes use of computing nodes in the form of mobile devices,which utilize and process the real-time IoT devices data in orders of *** paper proposes workload-aware efficient resource allocation and load balancing in the fog-computing environment for the *** proposed algorithmic framework consists of the following components:task sequencing,dynamic resource allocation,and load *** consider electrocardiography(ECG)sensors for patient’s critical tasks to achieve maximum load balancing among fog nodes and to measure the performance of end-to-end delay,energy,network consumption and average *** proposed algorithm has been evaluated using the iFogSim tool,and results with the existing approach have been *** experimental results exhibit that the proposed technique achieves a 45%decrease in delay,37%reduction in energy consumption,and 25%decrease in network bandwidth consumption compared to the existing studies.

关键词： Fog computing internet of health things resource management

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Computational modeling and analysis for the effect of magnetic field on rotating stretched disk flow with heat transfer

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Propulsion and Power Research 2021年第1期10卷 48-57页

作者： salman Ahmad T.Hayat A.Alsaedi habib Ullah Faisal Shah Department of Mathematics Quaid-I-Azam University45320Islamabad44000Pakistan Nonlinear Analysis and Applied Mathematics(NAAM)Research Group Department of MathematicsFaculty of ScienceKing Abdulaziz UniversityP.O.Box 80257Jeddah21589Saudi Arabia

Time-dependent viscous fluid flow due to a stretchable rotating disk is *** field is applied in vertical direction to the *** equation is assisted with Joule heating *** system of PDE's is transformed to dimensionless form by suitable *** of the numerical techniques known as finite difference scheme is adopted to tackle the given dimensionless partial differential *** method results in a system of simple algebraic *** unknown function is analyzed inside domain of *** this technique of solution,a system is subdivided into many smaller parts called finite *** obtained simpler algebraic equations are then assembled to form a system of equations which governs the original *** method is used to get approximate solution by reducing the error *** of pertinent variables on surface drag force,temperature,velocity and heat transfer rate are shown *** obtained outcomes guarantee that velocity decreases for Hartmann number while it enhances with Reynolds *** increases for higher Prandtl,Eckert and Hartmann *** friction boosts for larger values of Hartmann *** number enhances with Hartmann number.

关键词： Finite difference scheme Magnetic field System of partial differential equations Joule heating Rotating stretchable disk

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Serious games in science education:a systematic literature review

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Virtual Reality & Intelligent Hardware 2022年第3期4卷 189-209页

作者： Mohib ULLAH Sareer Ul AMIN Muhammad MUNSIF Muhammad Mudassar YAMIN Utkurbek SAFAEV habib KHAN salman KHAN habib ULLAH Department of Computer Science Norwegian University of Science and Technology2815 GjøvikNorway Department of Computer Science Islamia College University Peshawar25000 Pakistan Department of Information Security and Communication Norwegian University of Science and Technology2815 GjøvikNorway Faculty of Science and Technology Norwegian University of Life Sciences1430ÅsNorway

Teaching science through computer games,simulations,and artificial intelligence(AI)is an increasingly active research *** this end,we conducted a systematic literature review on serious games for science education to reveal research trends and *** discussed the role of virtual reality(VR),AI,and augmented reality(AR)games in teaching science subjects like ***,we covered the research spanning between 2011 and 2021,investigated country-wise concentration and most common evaluation methods,and discussed the positive and negative aspects of serious games in science education in particular and attitudes towards the use of serious games in education in general.

关键词： Serious games Simulations,Artificial intelligence,Virtual reality,Augmented reality Games in education

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The Effect of Oral Nifedipine versus Parenteral Magnesium Sulfate and Ritodrine for Tocolysis in Patients with Threatened Preterm Labor: A Randomized Controlled Trial

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Open Journal of Obstetrics and Gynecology 2019年第8期9卷 1142-1150页

作者： Safwat A. salman Dina habib Mohamed Atef Ahmed M. Abbas Department of Obstetrics & Gynecology Faculty of Medicine Assiut University Assiut Egypt Department of Obstetrics & Gynecology Sohag Teaching Hospital Sohag Egypt

Background: Preterm labor is a serious cause of neonatal morbidity and mortality. This study aims to compare the effects of nifedipine, Magnesium sulfate and ritodrine as tocolytic drugs in patients presented with threatened preterm labor. Patients and Methods: The current study was randomized controlled trial conducted in Sohag Teaching Hospital between November 2015 and September 2016. Patients were divided into: Group A: 101 patients received intravenous ritodrine infusion;Group B: 101 patients received intravenous magnesium sulfate;Group C: 101 patients received oral nifedipine. Different maternal and neonatal outcomes were assessed. Results: The baseline criteria were homogenous among the study groups with no statistically significant differences. There is no difference between each other group regarding the need for additional tocolysis or the rate of recurrence of labour pains. Nifedipine was associated with the least length of hospital stay. There is no difference between all groups regarding the rate of preterm delivery before full steroid dose (p > 0.05). However, nifedipine group was the least one in the rate of occurrence of preterm delivery within 7 days from initiation of tocolytic therapy. Similarly, nifedipine group was associated with higher gestational age at delivery and significant prolongation of pregnancy than the other groups. Conclusion: Oral nifedipine use was associated with less recurrence of labor pains, less need for additional tocolysis, less duration of hospital stay, and more patient satisfaction in patients with threatened preterm labour.

关键词： Tocolysis Preterm Labour Nifedipine Ritodrine

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SER estimation method for 56 GBaud PAM-4 transmission system

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Chinese Optics Letters 2018年第4期16卷 30-34页

作者： Aadil Raza Kangping Zhong salman Ghafoor Saeed Iqbal Muhammad Adeel Shahid habib Muhammad Fasih Uddin Butt Chao Lu COMSATS Institute of Information Technology (CIIT) Islamabad Pakistan Department of Electronic and Information Engineering The Hong Kong Polytechnic University Hong Kong China National University of Sciences and Technology (NUST) Islamabad Pakistan

In this Letter, we have proposed a generalized Gaussian probability density function（GGPDF）-based method to estimate the symbol error ratio（SER） for pulse amplitude modulation（PAM-4） in an intensity modulation/direct detection（IM/DD） system. Furthermore, a closed form expression of SERGGDfor PAM-4 has been derived. The performance of the proposed method is evaluated through simulation as well as experimental *** fitting of probability density functions of the received signal is applied via GGPDF and shape parameters P1 and P2 associated with different PAM-4 levels are determined. The optimum single value of shape parameter P is then calculated to estimate the SER. The mathematical relationship of P with different received optical powers and receiver bandwidths has been determined and verified. The proposed method is a fast and accurate method to estimate SER of a PAM-4 system, which is more reliable and in agreement with the error counting method.

关键词： PAM SER estimation method for 56 GBaud PAM-4 transmission system

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Electric Energy Management Modeling for Kingdom of Bahrain

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Journal of Energy and Power Engineering 2015年第10期9卷 872-885页

作者： Isa salman Qamber Mohammed Yusuf Al-Hamad Abdul Majeed habib Abdul Karim Department of Electrical & Electronics Engineering University of Bahrain lsa Town 33831 Kingdom of Bahrain Client Interface Executive Operations Directorate-Trade Section GCC Interconnection Authority Dammam 31481 Kingdom ofSaudi Arabia Office of Minister of Energy Electricity & Water Authority Manama 2 Kingdom of Bahrain

In the deregulated economy, the maximum load forecasting is important for the electric industry. Many applications are included such as the energy generation and purchasing. The aim of the present study is to find the most suitable models for the peak load of the Kingdom of Bahrain. Many mathematical methods have been developing for maximum load forecasting. In the present paper, the modeling of the maximum load, population and GDP （gross domestic product） versus years obtained. The curve fitting technique used to find that models, where Graph 4.4.2 as a tool used to find the models. As well, Neuro-Fuzzy used to find the three models. Therefore, three techniques are used. These three are exponential, linear modeling and Neuro-Fuzzy. It is found that, the Neuro-Fuzzy is the most suitable and realistic one. Then, the linear modeling is the next suitable one.

关键词： Neuro-Fuzzy peak loads population GDP Graph 4.4.2 curve fitting.

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Is Tuberculosis Treatment Truly Free? A Study to Identify Key Factors Contributing to the Catastrophic Cost of TB Care in Pakistan

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Journal of Tuberculosis Research 2020年第4期8卷 181-198页

作者： Aamer Ikram Amna Ali Sana habib Abbasi Nosheen Ashraf Sidra Wali Mohammad salman Mumtaz A. Khan Naveed Syed Jamil A. Ansari National Institute of Health Islamabad Pakistan Public Health England London UK

Background: The interplay between financial deprivation and tuberculosis (TB) is considered one of the vital socio-economic determinants of disease. This is the first study of its kind to be carried in Pakistan, which aims to identify leading factors contributing towards catastrophic costs of TB diagnosis and management in order to help policy makers. Methodology: From four tertiary care hospitals (TCH) in Islamabad and Rawalpindi, 400 TB patients were interviewed through a cross-sectional survey. The patient’s pre and post-TB income and direct and indirect costs for treatment were analysed following WHO recommendations. Multivariable logistic regression model was used to identify the determinants of catastrophic total cost. Results: For TB management expenditures, the median (interquartile range) of total costs by households was Rs. 58,175 Rs (32,050 - 97,500). At 20% threshold, 67% of TB patient’s households were affected by catastrophic

关键词： Tuberculosis Financial Deprivation Catastrophic Cost

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Bifurcation Analysis of a Coupled Acetylcholinesterase/Choline Acetyltransferase Enzymes Neurocycle

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Advances in Chemical Engineering and Science 2013年第1期3卷 16-35页

作者： Hamza M. habib G. Ibrahim Osama Noman Saleh Department of Basic Engineering Science Faculty of Engineering Menoufia University Shebin El-Kom Egypt Department of Mathematics College of Science Salman Bin Abdualziz University Al-Kharj KSA

A diffusion-reaction, two-compartment model was used to explore the bifurcation and chaotic behavior of acetylcholinesterase (AChE) and cholineacetyltransferase (ChAT) coupled enzymes system. The effects of hydrogen ion feed concentrations, choline (Ch) and acetylcholine (ACh) feed concentrations, as bifurcation parameters on the system performance are studied. It is found that hydrogen ions play an important role in creating potential differences through the plasma membranes. Detailed bifurcation analysis over a wide range of parameters is carried out in order to uncover some of the qualitative changes of the system such as hysteresis, multiplicity, Hopf bifurcation, boundary crises bifurcation, periodic transient, and other complex dynamics. Some of the obtained results relate to the phenomena occurring in the physiological experiments like periodic stimulation of neural cells and irregular functioning of acetylcholine receptors. The model depends on real kinetics expressions and parameters obtained from the literature, so the results can be used to direct more systematic research on cholinergic disorder.

关键词： Neurocycle Modelling Acetylcholinesterase/Choline Acetyltransferase Bifurcation Enzyme Nonlinear Dynamics

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