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2024 International Conference on Computer, Electronics, electrical engineering and their Applications, IC2E3 2024

作者： Gutierrez-Torres, Diego Armando Ramirez, Juan M. Garcia, Jose M. Lozano Sundriyal, Nitin Bhatt, Ankit Power Systems CINVESTAV del IPN Guadalajara Mexico Universidad de Guanajuato DICIS Electrical Engineering Department Salamanca Mexico University Electrical Engineering Department Dehradun India

ISBN: (纸本)9798350388534

This paper presents the implementation of a wind energy conversion system (WECS) type IV. The WECS type IV consists of the wind turbine, electric generator, alternating current-ac alternating current (AC-AC) electronic converter and the electric grid. A wind turbine emulator, a permanent magnet synchronous generator (PMSG), and a direct matrix converter (DMC) are used for the implementation. The DMC is used to manage the power flow between the generator and the grid. On the generator side a maximum power point tracking (MPPT) control, a field oriented control (FOC) and a proportional integral compensator (PI) are implemented;while on the grid side it is intended to transfer the maximum power and regulate the reactive power. Finally, the results of the WECS and its controls are shown. © 2024 IEEE.

关键词： Windmill

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Observer-based stabilization for discrete nonlinear semi-Markov jump singularly perturbed models with mode-switching delay

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Science China(Information Sciences) 2025年第4期68卷 389-390页

作者： Wenhai QI Runkun LI Ju H.PARK Zheng-Guang WU Huaicheng YAN School of Engineering Qufu Normal University Department of Electrical Engineering Yeungnam University Institute of Cyber-Systems and Control Zhejiang University Key Laboratory of Smart Manufacturing in Energy Chemical Process of Ministry of Education East China University of Science and Technology

Semi-Markov jump systems(S-MJMs) not only characterize hybrid systems but also address the limitations of Markov jump systems(MJMs) [1–3]. Due to their ability to exhibit multi-time-scale features, singularly perturbed models(SPMs) effectively model practical systems influenced by multiple time-scale phenomena [4]. In this study, the observer-based output feedback controller is asynchronous with the original system due to the time delay in the controller mode switching. A nonlinear plant with singularly perturbed parameters(SPPs) is represented using an interval type-2(IT2) fuzzy model [5].

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Greedy Shapley Client Selection for Communication-Efficient Federated Learning

IEEE Networking Letters

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IEEE Networking Letters 2024年第2期6卷 134-138页

作者： Singhal, Pranava Pandey, Shashi Raj Popovski, Petar Indian Institute of Technology Bombay Electrical Engineering Department Mumbai400076 India Aalborg University Connectivity Section Department of Electronic Systems Aalborg9220 Denmark

The standard client selection algorithms for Federated Learning (FL) are often unbiased and involve uniform random sampling of clients. This has been proven sub-optimal for fast convergence under practical settings characterized by significant heterogeneity in data distribution, computing, and communication resources across clients. For applications having timing constraints due to limited communication opportunities with the parameter server (PS), the client selection strategy is critical to complete model training within the fixed budget of communication rounds. To address this, we develop a biased client selection strategy, GreedyFed, that identifies and greedily selects the most contributing clients in each communication round. This method builds on a fast approximation algorithm for the Shapley Value at the PS, making the computation tractable for real-world applications with many clients. Compared to various client selection strategies on several real-world datasets, GreedyFed demonstrates fast and stable convergence with high accuracy under timing constraints and when imposing a higher degree of heterogeneity in data distribution, systems constraints, and privacy requirements. © 2019 IEEE.

关键词： Approximation algorithms

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Explicit Information-Debt-Optimal Streaming Codes With Small Memory

Explicit Information-Debt-Optimal Streaming Codes With Small...

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2023 IEEE International Symposium on Information Theory, ISIT 2023

作者： Krishnan, M. Nikhil Vajha, Myna Ramkumar, Vinayak Kumar, P. Vijay Iit Palakkad Department of Electrical Engineering India Qualcomm Bengaluru India Tel Aviv University Department of Electrical Engineering-Systems Israel IISc Bangalore Department of Electrical Communication Engineering India

ISBN: (纸本)9781665475549

For a convolutional code in the presence of a symbol erasure channel, the information debt I(t) at time t provides a measure of the number of additional code symbols required to recover all message symbols up to time t. Information-debt-optimal streaming (iDOS) codes are convolutional codes which allow for the recovery of all message symbols up to t whenever I(t) turns zero under the following conditions;(i) information debt can be non-zero for at most t consecutive time slots and (ii) information debt never increases beyond a particular threshold. The existence of periodically-time-varying iDOS codes are known for all parameters. In this paper, we address the problem of constructing explicit, time-invariant iDOS codes. We present an explicit time-invariant construction of iDOS codes for the unit memory (m = 1) case. It is also shown that a construction method for convolutional codes due to Almeida et al. leads to explicit time-invariant iDOS codes for all parameters. However, this general construction requires a larger field size than the first construction for the m = 1 case. © 2023 IEEE.

关键词： Convolutional codes

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Comparative Analysis of Photoplethysmogram (PPG) Waveform Characteristics Across Various Body Sites Under Normal and Apneic Conditions 46

Comparative Analysis of Photoplethysmogram (PPG) Waveform Ch...

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46th Annual International Conference of the IEEE engineering in Medicine and Biology Society, EMBC 2024

作者： Rahme, Joe Saleh, Sahera Al-Sadek, Tamara Amatoury, Jason Khraiche, Massoud American University of Beirut Biomedical Engineering Program Beirut Lebanon American University of Beirut Department of Electrical Engineering Beirut Lebanon

ISBN: (纸本)9798350371499

Detecting sleep apnea through wearable devices poses challenges due to the condition's variability across populations and the inconsistencies in measurements attributed to current wearable technologies. This study aims at comparing photoplethysmogram (PPG) waveform characteristics in healthy subjects, including the change in amplitude, width, and time to peak (Tp) of the signal. PPG signals were recorded at six different body sites (wrist upper, wrist lower, ring finger, thumb, neck, and head) under both simulated normal and apneic conditions. A key objective of this work was to identify optimal LED intensities for detecting these waveform features at each site, providing valuable insights for future development of PPG hardware by pinpointing the most effective intensities. Additionally, the research aims for a better understanding of the variation of the PPG waveform between different body sites. © 2024 IEEE.

关键词： Photoplethysmography

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Deep Learning-Based Secrecy Performance of UAV-IRS NOMA systems with Friendly Jamming

IEEE Open Journal of the Communications Society

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IEEE Open Journal of the Communications Society 2025年 6卷 4533-4548页

作者： Yadav, Kajal Upadhyay, Prabhat K. Moualeu, Jules M. Osman, Amani A. F. Nardelli, Pedro H. J. Indian Institute of Technology Indore Department of Electrical Engineering Madhya Pradesh 453552 India University of the Witwatersrand School of Electrical and Information Engineering Johannesburg2000 South Africa Lappeenranta-Lahti University of Technology School of Energy Systems Lappeenranta Finland

The Internet of Things (IoT) landscape is rapidly evolving driven by recent advances in key emerging technologies. In this paper, we explore the integration of the intelligent reflecting surface (IRS), non-orthogonal multiple access (NOMA), and unmanned aerial vehicle (UAV) to enhance spectral and energy efficiencies, as well as wireless connectivity in IoT applications. However, such applications are vulnerable to eavesdropping threats that can compromise both their integrity and privacy. To circumvent this, we incorporate a friendly jamming technique into the proposed UAV-borne IRS NOMA system. Moreover, we analyze the secrecy performance of the underlying system with friendly jamming by deriving analytical expressions of the and the secrecy outage probability (SOP) and the probability of strictly positive secrecy capacity. In addition, we obtain explicit and simplified expressions to approximate the SOP at high signal-to-noise ratio values and to highlight useful insights of various parameters into the system design. Subsequently, the accuracy of the proposed theoretical framework is validated through comprehensive Monte Carlo simulations. We also propose an algorithm that determines an optimal power allocation. Finally, a fully optimized deep neural network model is developed to predict the SOP under dynamic conditions. Numerical results demonstrate the efficacy of the proposed jamming-enabled system over its non-jamming counterpart. Specifically, it shows that the proposed system outperforms its non-jamming counterpart in terms of SOP by about 72%, and the runtime of the deep neural network model is 5.7 times faster than Monte Carlo simulations while maintaining a good accuracy. © 2020 IEEE.

关键词： Drones

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Exploring Bess Services for Transformer Energization on Offshore Oil and Gas Platforms

Exploring Bess Services for Transformer Energization on Offs...

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2024 IEEE Petroleum and Chemical Industry Conference Brasil, PCIC Brasil 2024

作者： Banda, Joseph K. Araujo, Lucas S. Brandao, Danilo I. Marafao, Fernando P. Tedeschi, Elisabetta Department of Electric Power Engineering Trondheim Norway Graduate Program in Electrical Engineering Belo Horizonte Brazil Department of Control and Automation Engineering Sorocaba Brazil University of Trento Department of Industrial Engineering Trento Italy

ISBN: (纸本)9798350368154

The electrification of offshore oil and gas platforms (OOGPs), using offshore wind turbines, is now a reality, aimed at minimizing carbon emissions. In this scenario, the utilization of battery energy storage systems (BESS) improves both efficiency and power quality. As this integration comes with a high CAPEX, industries demand exploring BESS for multiple ancillary services on OOGPs. Thus, this paper proposes an alternative approach to energizing a power transformer (PT) using the BESS power conversion system (PCS) on the platform, aiming to minimize inrush currents. This avoids the necessity for additional bulky devices, converters, or dc voltage sources specifically designated for this purpose. The strategy consists of manipulating residual core flux using BESS PCS followed by a controlled switching, which reduces inrush currents during PT energization. The results show effective reduction of the inrush current from 2.31 pu to 0.16 pu for the presented case study. © 2024 IEEE.

关键词： Power transformers

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Independent Field Excitation Control of an In-Wheel Wound-Field Flux-Switching Machine for Micro-Hybrid Applications 8

Independent Field Excitation Control of an In-Wheel Wound-Fi...

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8th Southern Power Electronics Conference and the 17th Brazilian Power Electronics Conference, SPEC / COBEP 2023

作者： Vilela Galo, Diogo Pereira Carvalho Maia, Thales Alexandre De Jesus Cardoso Filho, Braz Ufmg Graduate Program in Electrical Engineering Belo Horizonte Brazil Ufmg Department of Electrical Engineering Belo Horizonte Brazil

ISBN: (纸本)9798350321128

The tightening global emission regulations are com-pelling original equipment manufacturers and researchers to prioritize electrified solutions. In developing countries, fossfl fuel-powered vehicles are expected to continue being the primary choice for light-duty passenger vehicles in the medium term. It is crucial to recognize that micro and mild hybrid electric vehicles can make a significant contribution to reducing emissions and mitigating environmental impact. Electric machine designs with fewer or no rare-earth permanent magnets will play an important role in the widespread adoption of hybrid solutions. In this context, doubly salient reluctance machines exhibit a simple structure, robust mechanical strength, excellent fault tolerance, and a wide speed regulation range, making them well-suited for in-wheel applications. Particular emphasis should be placed on flux-switching ma-chines, which offer great operating flexibility, efficient heat dissipation, and power density of up to 4.8 kW/kg. This paper introduces a wound-field flux-switching machine designed for in-wheel applications, featuring individual field current control. Firstly, the machine is reconfigured to enable independent control of field currents, with a dedicated test bench equipped for precise current control. The primary objective of this research is to enhance the machine's operational versatility by facilitating electronic adjustment of the number of poles, promoting balanced operation' and auamentina field-weakenina capabilities. © 2023 IEEE.

关键词： Hybrid Electric Vehicles In-wheel drives Independent Field-Current Control Wound-Field Flux-Switching Machine

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A High-Efficiency, Indirectly-Fed, Dual Moon-Shaped Printed Antenna for Measuring Sand Gradation 7

A High-Efficiency, Indirectly-Fed, Dual Moon-Shaped Printed ...

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7th IEEE International Symposium on Telecommunication Technologies, ISTT 2024

作者： Abbas, Mohammed K. Hammed, Raaed T. Salim, Ali J. Sali, Aduwati University of Technology Department of Electrical Engineering Baghdad Iraq University of Technology Department of Communication Engineering Baghdad Iraq Department of Computer and Communication Systems Engineering Selangor Serdang43400 Malaysia

ISBN: (纸本)9798350392074

In this paper, an enhanced bandwidth antenna featuring a dual moon-shaped patch design is presented. The antenna occupies an area of 153 mm by 130 mm and operates within the frequency band of 0.69 to 1.19 GHz. The structure is printed on an FR4 substrate with a dielectric constant of 4.3 and a substrate thickness of 1.5 mm. It achieves a bandwidth of 0.5 GHz (50%) and a minimum return loss of-47 dB at the resonant frequency of 1.00 GHz, with a gain of 4.02 dB. The proposed antenna consists of a dual moon-shaped patch positioned on the top of the dielectric substrate. It utilizes an indirect feeding method via a transmission line with two arms to enhance bandwidth. The ground plane is partially reduced, which allows the antenna to resonate at a lower frequency. Additionally, a triangular slot on the backside improves impedance matching from-15dB to-47dB, thus optimizing the electric size. Experimental results confirm the antenna's performance, showing excellent agreement with the predicted parameters. The antenna demonstrates robust performance with effective gain and high bandwidth, making it suitable for practical applications in infrastructure monitoring. An innovative method for measuring sand gradation on-site is being developed by voltage network analyzer Device, eliminating the need for traditional sieve analysis in the laboratory. © 2024 IEEE.

关键词： Microstrip antennas

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(Invited) Mobility Enhancement Technology of Extremely Thin Body Ge-On-Insulator Channel MOSFETs

(Invited) Mobility Enhancement Technology of Extremely Thin ...

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11th Symposium on SiGe, Ge, and Related Compounds: Materials, Processing, and Devices - In Memory of Qizhi Liu, held at the PRiME 2024 Meeting

作者： Takagi, Shinichi Han, Xueyang Chen, Chia-Tsong Sumita, Kei Toprasertpong, Kasidit Takenaka, Mitsuru Department of Electrical Engineering and Information Systems The University of Tokyo Tokyo Japan

ISBN: (纸本)9781623326630

An extremely thin body (ETB) channel is mandatory for scaled nano-sheet structures to realize continuous miniaturization of CMOS devices. Here, mobility booster technologies to maintain high channel mobility are strongly needed, because surface roughness scattering significantly reduces mobility in such ETB channels. From this viewpoint, Ge-On-Insulator (GOI) or SiGe-On-Insulator (SGOI) channels are promising because of the low electron and hole effective mass along channel directions. It is theoretically shown that (111) GOI n-MOSFETs can hold high electron mobility even in the body thickness down to 2 nm. Thus, (111) GOI structures and n-MOSFETs are fabricated, and the electrical characteristics are studied. For p-MOSFETs, on the other hand, (110) surface orientation and application of compressive strain are still effective in boosting hole mobility in ETB channels. Here, (110) asymmetric compressive strain SGOI p-MOSFETs are experimentally demonstrated, and the body thickness dependencies of the effective mobility are examined. Copyright © 2024 by The Electrochemical Society. All rights reserved.

关键词： MOSFET devices

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