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2023 International Conference on Next-Generation Computing, IoT and Machine Learning, NCIM 2023

作者： Chowdhury, Apurba Ray Hannan, Saif Uddin, Md Kutub Bhuiyan, Md. Emdadul Hoque Hoque, Md Inzamul Islam, Mohammad Tariqul Department of Electronic and Telecommunication Engineering Chattogram Bangladesh Universiti Kebangsaan Malaysia Department of Electrical Electronic and Systems Engineering Bangi Malaysia

ISBN: (纸本)9798350316001

This paper presents a multiband metamaterial (MM) absorber that displays the metamaterial characteristics at each resonance frequency. Broadband absorption is achieved in the X band at the range of 10.373 GHz to 10.825 GHz. Four resonances gain in C and X band frequency with single negative (SNG) MM properties at the frequencies of 4. 12, 5.776, 10.472, and 10.696 GHz, where the maximum absorptions are 99.4%, 99.9%, 95%, and 90.4% respectively. At last, compared with recent work on MM concerning the highest angle insensitive in Transverse Electromagnetic (TEM) mode, broadband absorption, compact size identifies it as a more useful ideal absorber. © 2023 IEEE.

关键词： Metamaterials

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A Nonlinear Adaptive H∞ Control with Finite-Time Stability and Exact Parameter Estimation∗

A Nonlinear Adaptive H∞ Control with Finite-Time Stability ...

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63rd IEEE Conference on Decision and Control, CDC 2024

作者： Campos, Jonatan M. Cardoso, Daniel N. Raffo, Guilherme V. Graduate Program in Electrical Engineering MG Belo Horizonte31270-901 Brazil Ufmg Department of Electrical Engineering MG Belo Horizonte Brazil Ufmg Department of Electronic Engineering MG Belo Horizonte Brazil

ISBN: (纸本)9798350316339

This work addresses the problem of adaptive control of Euler-Lagrange systems considering unknown parameters without the hypothesis that the persistence of excitation (PE) condition holds. A systematic framework to obtain linear regression equations in accordance with the dynamic regressor extension and mixing (DREM) technique is proposed involving the notion of the Euler-Lagrange first integral. Then, we develop a novel robust nonlinear adaptive H∞ controller capable of ensuring both convergence of the estimated unknown parameters and trajectory tracking in finite-time under a more relaxed condition than the PE assumption. The effectiveness of the proposed robust nonlinear adaptive H∞ controller is corroborated through numerical experiments with a simplified CRS-A465 robot manipulator. © 2024 IEEE.

关键词： Lagrange multipliers

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Utilizing HVDC Links for Cross-Border Grids Interconnection: System Level Assessment

Utilizing HVDC Links for Cross-Border Grids Interconnection:...

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2024 IEEE Energy Conversion Congress and Exposition, ECCE 2024

作者： Saadeh, Osama Sba, Baher Abu Alqbai, Bushra Dalala, Zakariya German Jordanian University Energy Engineering Department Amman Jordan University of Arkansas Department of Electrical Engineering FayettevilleAR United States Abdullah Al Salem University Energy Systems Engineering Department Khaldiya Kuwait

ISBN: (纸本)9798350376067

The increasing need for reliable and efficient electrical interconnections between neighboring countries necessitates the adoption of advanced transmission technologies. This study examines cross-border grid interconnection between Jordan and its neighboring countries, focusing on system-level power system performance indicators. Through detailed modeling and simulation, the technical advancements and control challenges associated with HVDC transmission are evaluated. This research aims to improve energy connections and address stability issues in power grids. This study provides a robust framework for decision-makers to prioritize HVDC investments, guiding the development of more resilient and efficient power grids. Jordan and its neighboring countries serve as a case study to validate the proposed methodology, demonstrating the transformative potential of HVDC systems for international grid interconnections. © 2024 IEEE.

关键词： Power grids

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Traffic Density Estimation by Distributed Proxy Model Learning for Internet-of-Vehicle

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IEEE Internet of Things Journal 2025年第12期12卷 19972-19980页

作者： Li, Qilei Cheng, Jing-An Gao, Mingliang Chen, Jinyong Jeon, Gwanggil Shandong University of Technology School of Electrical and Electronic Engineering Zibo255000 China Queen Mary University of London School of Electronic Engineering and Computer Science LondonE1 4NS United Kingdom Incheon National University Department of Embedded Systems Engineering Incheon22012 Korea Republic of

Autonomous driving has been significantly advanced in todays society, which revolutionized daily routines and facilitated the development of the Internet of Vehicles (IoV). A crucial aspect of this system is understanding traffic density to enable intelligent traffic management. With the rapid improvement in deep neural networks (DNNs), the accuracy of density estimation has markedly improved. However, there are two main issues that remain unsolved. Firstly, current DNN-based models are excessively heavy, characterized by an overwhelming number of training parameters (millions or even billions) and substantial computational complexity, indicated by a high number of FLOPs. These requirements for storage and computation severely limit the practical application of these models, especially on edge devices with limited capacity and computational power. Secondly, despite the superior performance of DNN models, their effectiveness largely depends on the availability of large-scale data for training. Growing privacy concerns have made individuals increasingly hesitant to allow their data to be publicly used for model training, particularly in vehicle-related applications that might reveal personal movements, which leads to data isolation issues. In this paper, we address these two problems at once with a systematic framework. Specifically, we introduce the Proxy Model Distributed Learning (PMDL) model for traffic density estimation. PMDL model is composed of two main components. First, we introduce a proxy model learning strategy that transfers fine-grained knowledge from a larger master model to a lightweight proxy model, i.e., a proxy model. Second, we design a distributed learning strategy that trains multiple proxy models with privacy-aware local data and seamlessly aggregates these models via a global parameter server. This ensures privacy protection while significantly improving estimation performance compared to training models with limited, isolated data. We tested

关键词： Differential privacy

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Black-hole optimisation algorithm with FOPID-based automation intelligence photovoltaic system for voltage and power issues

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Australian Journal of electrical and Electronics engineering 2024年第2期21卷 115-127页

作者： Basil, Noorulden Marhoon, Hamzah M. Hayal, Mohammed R. Elsayed, Ebrahim E. Nurhidayat, Irfan Shah, Mohd Asif Department of Electrical Engineering College of Engineering Mustansiriyah University Baghdad Iraq Department of Systems Engineering College of Information Engineering Al-Nahrain University Baghdad Iraq Faculty of Engineering Mansoura University Mansoura Egypt Peneliti Matematika Terapan Jawa Barat Majalengka Indonesia Department of Economics Kabridahar University Kabridahar Ethiopia Centre of Research Impact and Outcome Chitkara University Institute of Engineering and Technology Chitkara University Punjab Rajpura India Division of Research and Development Lovely Professional University Punjab Phagwara India

The article discusses the challenges related to voltage and power management in automated intelligent photovoltaic (PV) systems. It suggests that Fractional Order Proportional Integral Derivative (FOPID) controllers can help address these challenges effectively. The research aims to create a highly adaptable and precise automated intelligent PV system that focuses on managing voltage and power issues. It introduces a novel approach using the Black Hole Optimization (BHO) algorithm and leverages the advantages of FOPID controllers for automation. The study also considers thermal models for batteries within the automated intelligent PV system and explores different options to handle voltage and power issues stemming from PV panels. It involves fine-tuning 15 parameters using the BHO algorithm and concludes that one configuration (Instance 1) is preferable due to its superior accuracy and scalability. This choice is supported by objective validation. In essence, your abstract is about improving the performance and automation of PV systems, particularly in dealing with voltage and power challenges, through the application of FOPID controllers and the innovative BHO algorithm. ©, Engineers Australia.

关键词： Two term control systems

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Change of electrical and Transport Properties of Nickel Oxide by Carrier Concentration and Temperature through First‑Principle Calculations

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Nanomanufacturing and Metrology 2023年第4期6卷 109-118页

作者： Nayem Md.Reza Shah Chang‑Dong Yeo Minyeong Choi Yang‑Ki Hong Jeong H.You Department of Mechanical Engineering Texas Tech UniversityLubbockTX 79409USA Department of Electrical and Computer Engineering and Material Science Ph.D.Program The University of AlabamaTuscaloosaAL 35487USA Department of Mechanical Engineering School of EngineeringUniversity of St.ThomasSt.PaulMN 55105USA

Nickel is typically used as one of the main components in electrical contact devices or *** oxide(NiO)is usually formed on the surfaces of electrodes and can negatively impact system performance by introducing electrical contact *** thermal,electrical,and transport properties of NiO,as a Mott insulator or a p-type semiconductor,can be altered by operating and environmental conditions such as temperature and stress/strain by *** this study,we inves-tigate the fundamental material properties of NiO through the first-principle ***,we obtain and compare the lattice parameter,magnetic moment,and electronic structure for NiO via the WIEN2K simulations with four different poten-tials(i.e.,GGA,GGA+U,LSDA,and LSDA+U).Then,using the WIEN2K simulation results with LSDA+U potential that produces a highly accurate bandgap for NiO,we calculate the electrical conductivity and electrical part of the thermal conductivity of nickel and NiO as a function of temperature and carrier concentration through the BoltzTraP *** simulation results revealed that the electrical conductivity relative to the relaxation time for NiO increases with the carrier concentration,while it shows a slightly decreasing trend with temperature under a fixed carrier *** contrast,the electrical part of the thermal conductivity shows an increasing trend considering carrier concentration and temperature.

关键词： Nickel oxide Magnetic moments Density of states Seebeck coefcient electrical conductivity

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Sampling and Quantization-Aware Control Barrier Functions for Safety-Critical Control of Cyber-Physical systems 63

Sampling and Quantization-Aware Control Barrier Functions fo...

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63rd IEEE Conference on Decision and Control, CDC 2024

作者： Niu, Luyao Ramasubramanian, Bhaskar Clark, Andrew Poovendran, Radha University of Washington Department of Electrical and Computer Engineering SeattleWA United States Western Washington University Electrical and Computer Engineering BellinghamWA United States Washington University in St. Louis Department of Electrical and Systems Engineering St. LouisMO United States

ISBN: (纸本)9798350316339

Safety is critical to a wide range of cyber-physical systems (CPS). Safety violations may damage CPS and cause harm to humans that co-exist in the operating environment. However, it is nontrivial to guarantee safety of complex CPS whose computation and control workload are shifted to the cloud. The reason is that the system states which evolve continuously are sampled periodically and quantized before being sent to the controller to compute control inputs. Moreover, the controller may operate with finite precision, making the coefficients involved in computation different from those of the actual system. Consequently, the synthesized control inputs to the system may lead to safety violations. In this paper, we study the co-design of quantizer and control inputs for such CPS. We construct a control barrier function (CBF) constraint for the digital controller and analyze how it differs from the CBF constraint formulated using the actual system states and dynamics. We observe that this difference is dependent on the sampling error, quantization error, and error induced by finite precision of the controller. We derive upper bounds of these errors and use the bounds to design a state quantizer. We show that the problem of designing a quantizer can be converted to a facility location problem. We prove the submodularity of the quantizer design problem, and leverage the submodularity property to develop an efficient greedy algorithm to construct the quantizer. Given the quantized states calculated by the quantizer, we modify the CBF constraint used by the controller to synthesize control inputs for the system at each sampling interval. We show that the synthesized inputs guarantee the system safety. We demonstrate the proposed approach using a numerical case study on a batch reactor system. © 2024 IEEE.

关键词： Control system synthesis

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SPD Miscoordination in PV systems Due to Lightning Strikes 16

SPD Miscoordination in PV Systems Due to Lightning Strikes

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16th International Conference on Applied and Theoretical Electricity, ICATE 2024

作者： Baluja, Osmel Perez Leon Avila, Bernardo Yaser Garcia Vazquez, Carlos A. Cotfas, Daniel Tudor Cotfas, Petru Adrian Breffe, Orlys E. Torres Transilvania University of Braşov Faculty of Electrical Engineering and Computer Science Department of Electronics and Computers Brasov Romania Technological University of Havana Department of Electric Power Systems Faculty of Electrical Engineering Havana Cuba

ISBN: (纸本)9798350388107

This study deals with the coordination of surge protection devices (SPD) in photovoltaic systems (PV). A PV farm model was developed in MATLAB Simulink with all the main components, solar panels, converter, grounding system, power transformer, cables in the DC and AC branches with their capacitances, and surge protection device throughout the installation. It was found that when lightning strikes the grounding system or in the vicinity of the PV installation, the coordination among SPD types 1, 2, and 3 is lost. Miscoordination can cause damage to several elements of the PV system, mainly the inverters. Finally, solutions were proposed to avoid SPD miscoordination during lightning strikes. © 2024 IEEE.

关键词： DC transformers

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electrical Tracking,Erosion and Fire Retardancy Performance of Silicone Rubber Insulation Containing Aluminum Trihydrate,Graphene and Glass Fiber Additives

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CSEE Journal of Power and Energy systems 2023年第5期9卷 1918-1925页

作者： M.Tariq Nazir Arslan Khalid B.Toan Phung Arup K.Das Peter Cheetham Ashish Paramane Shakeel Akram Khoi Loon Wong School of Engineering RMIT UniversityMelbourneVIC 3000Australia. the Center for Advanced Power Systems(CAPS) Florida State UniversityFL 32310USA the Flame Security International Pty Limited Australia the School of Electrical Engineering and Telecommunications University of New South Wales SydneyNSW 2052Australia Department of Electrical Engineering National Institute of TechnologySilcharAssam 788010India the College of Electrical Engineering and Control Science Nanjing Tech UniversityNanjingJiangsu 211816China

Silicone rubber composite is a priority electrical insulating material used in high-voltage outdoor insulation *** electrical tracking/erosion and poor flame resistance performance of silicone rubber once ignited,substantially reduce its working *** paper attempts to investigate tracking/erosion performance of room temperature vulcanized(RTV)silicone rubber along with flame retardant parameters using aluminum trihydrate(ATH),graphene nanosheets(GN)and milled glass fiber(GF)*** inclined plane test(IPT)was performed in line with criteria defined in IEC 60587 using step-up tracking voltage method while flame retardancy is evaluated according to ASTM E 1354.0 using a cone *** suggest 30% of ATH assists in improving physical tracking/erosion resistance of pristine silicone elastomer rubber by impeding development of leakage current and a great reduction in maximum average temperatures on the surface of *** improvement in performance of RTV2 is achieved through introduction of 1%of GN and 5% of GF as seen in ***,30% of ATH reduces heat release rate and smoke production rate,and this trend is improved with the introduction of GN/***4 has pop up as the most promising silicone rubber composite with excellent electrical tracking,erosion,and flame resistance performance relative to its counterparts in this study.

关键词： Dry band arcing electrical tracking heat release rate leakage current silicone rubber smoke production rate

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Experimental Study on Characteristics Variation of Permanent Magnets for High-speed Machine Applications

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Chinese Journal of electrical engineering 2022年第1期8卷 16-23页

作者： Yunchong Wang Hongxia Cao Ilhami Colak Youhao Zhang Jianxin Shen College of Electrical Engineering Zhejiang UniversityHangzhou 310027China Zhejiang Provincial Key Laboratory of Electrical Machine Systems Hangzhou 310027China Department of Electrical and Electronics Engineering Nisantasi UniversityIstanbul 34000Turkey

High-speed permanent magnet(PM)electric machines are widely ***,their extreme operating conditions,e.g.,high temperature and high mechanical stress,lead to variations of the PM characteristics and affect the machine *** the present study,an experimental device is designed to test the PM characteristics by simulating the stress and temperature conditions of high-speed *** experimental results indicate that the PM remanence not only varies at high temperatures,which is well known,but also changes under high mechanical *** is shown that the PM remanence increases with the mechanical stress but decreases with the temperature ***,a new demagnetization-curve model of the magnets under multiple stresses is refined to better express the PM *** performance of a high-speed PM machine is then analyzed as an example to indicate the necessity of the model *** effects of the temperature and mechanical stress on the conductivity of the PMs are also *** experimental results indicate that the conductivity of the PM increases with the temperature and pressure.

关键词： High-speed machine permanent magnet mechanical stress remanence variation demagnetization-curve model

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