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21st International Learning and Technology Conference, L and T 2024

作者： Junaid, Muhammad Waqar, Asad Qaisar, Saeed Mian Bahria University Department of Electrical Engineering Islamabad Pakistan Effat University Electrical and Computer Engineering Department Jeddah21478 Saudi Arabia

ISBN: (纸本)9798350393569

The present investigation utilizes the Forward-Backward Sweep (FBS) technique in combination with the Sea Horse Optimization (SHO) algorithm to maximize the distribution network's capacity and arrange Distributed Generators (DGs) according to their intended use case. Through the use of Torrit software and the integration of MATPOWER toolbox in MATLAB, the network is methodically assessed under four scenarios (Case A to Case D), featuring four DG types (type 1, type 2, type 3, and type 4). The most promising of them is Case C, which uses type 3 DGs and shows impressive reductions in reactive and active power loss along with a significant increase in power factor and voltage profile. The conclusions provide utility operators looking for the best DG deployment tactics with insightful information. © 2024 IEEE.

关键词： Distributed power generation

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Analysis of Reciprocity Based Downlink Channel Estimation with Uneven Uplink Channel 1st

Analysis of Reciprocity Based Downlink Channel Estimation wi...

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1st International Symposium on Intelligent Computing and Networking, ISICN 2024

作者： Kumar, Venkataramani Ye, Feng Department of Electrical and Computer Engineering University of Dayton DaytonOH United States Department of Electrical and Computer Engineering University of Wisconsin-Madison MadisonWI United States

ISBN: (纸本)9783031674464

Multiple input multiple output (MIMO) plays an important role in realizing the present fifth-generation (5G) as well as the next-generation wireless networks. The channel estimation process in the majority of the existing works in MIMO focuses on equal uplink and downlink channels. However, certain applications such as satellite internet utilize narrow uplink to estimate wider downlink channels. In this work, we intend to analyze the performance of channel estimations in systems with unequal uplink and downlink channels using some of the existing approaches in the literature that focus on channel reciprocity. The proposed idea is validated on an open-source dataset comprising uplink In-phase and Quadrature (I/Q) components collected at 2.4 GHz. The preliminary evaluation results are discussed within the scope of this work. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： 5G mobile communication systems

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Development of a Smart Shoe for Blind and Visual Impaired People

Development of a Smart Shoe for Blind and Visual Impaired Pe...

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2024 International Conference on engineering and Computing, ICECT 2024

作者： Ramzan, Aneeqa Mustafa, Rafay Kamran, Yashfa NUTECH Department of Electrical Engineering Islamabad Pakistan GIKI Faculty of Computer Science and Engg. Swabi Topi Pakistan IIUI Department of Electrical and Computer Engineering Pakistan

ISBN: (纸本)9798350349719

Providing adequate clinical and technical aid to blinds and visually impaired persons can be very challenging as it put financial strain on families due to the medical examination, treatment, surgical procedures and assistive devices expenses. The specialists to the mentioned individuals' ratio is low and exposure to ophthalmologists is limited. Either requirement of smartphone applications with need of internet connection or only direction oriented solutions but unable to avoid obstacles are the issues in existing market solutions. This paper proposes a novel technology of smart assistant aid for blind and visually impaired people (SSVIP) by developing a smart shoe prototype with sensors to detect obstacles, wet surfaces and ground vibrations, providing real-Time feedback to the user. If any of these are detected, the controller activates the buzzer and vibration motor, providing both audible alerts based on the detected sensor signal in order to alarm the wearer and tactile feedback respectively. SSVIP is then tested on 20 iterations after configuring and calibrating sensors and getting the optimized 20 units for ultrasonic sensor, 650 threshold for water sensor. Output accuracies of 87%, 80% and 83% for ultrasonic sensor, water sensor and vibration sensor resnectively and resulting overall 83% accuracy was acheived. © 2024 IEEE.

关键词： Ultrasonic sensors

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STABILITY AND INTERACTION ANALYSIS OF GRID-FORMING TYPE IV WIND TURBINES 23

STABILITY AND INTERACTION ANALYSIS OF GRID-FORMING TYPE IV W...

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23rd Wind and Solar Integration Workshop, WIW 2024

作者： Udawatte, Harith E. Ravanji, Mohammad H. Bahrani, Behrooz Department of Electrical & Computer Systems Engineering Monash University Melbourne Australia Department of Electrical Engineering Sharif University of Technology Tehran Iran

ISBN: (纸本)9781837242689

The global shift to renewable energy, especially wind power, is critical for achieving carbon-neutral power systems but poses challenges to grid stability due to reduced system inertia from inverter-based resources. Grid-forming (GFM) control modes are emerging as key solutions to these stability issues. Given the vast potential of wind energy, ensuring that wind turbine generators (WTGs) comply with GFM control standards is essential. This paper explores GFM capabilities in Type IV WTGs, focusing on the interactions between grid-side and machine-side control dynamics. A simplified small-signal model is developed to efficiently analyse the direct coupling between active power and DC-link control, highlighting how GFM parameters like droop and inertia, along with the DC controller bandwidth, affect system stability. Time-domain simulations validate the proposed tuning guidelines and reveal distinct WTG response characteristics at different wind speeds during grid contingencies. These insights lay the groundwork for robust GFM control designs, essential for a stable integration of wind turbines into high-renewable power systems. © Energynautics GmbH.

关键词： Windmill

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Designed harmonic step filter automatic control system to improve power quality and electric efficiency

Designed harmonic step filter automatic control system to im...

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2024 International Conference on Power Electronics and Energy System, ICPEES 2024

作者： Pasaribu, Faisal Irsan Sara, Ira Devi Tarmizi, Tarmizi Nasaruddin, Nasaruddin Doctoral Program School of Engineering Universitas Syiah Kuala Aceh23111 Indonesia Department Electrical and Computer Engineering Universitas Syiah Kuala Aceh23111 Indonesia

Good power quality and high-power efficiency are important aspects of power system management. Harmonic, as an unwanted frequency component in electrical signals, can interfere with power quality and reduce electrical efficiency. A passive harmonic filter is a device used to reduce or filter harmonics in electrical power systems. This research proposes technology Internet of Things with an automatic control system that moves the step filter to solve the harmonic problem, with the aim of improving the quality of power and electrical efficiency. The step filter functions to identify and isolate the harmonic, thus enabling appropriate controls to suppress the impact of the harmonic. The proposed system uses sophisticated control algorithms using sensors that can read current, voltage, frequency, and power factor to adjust the step filter parameters dynamically, following changes in load conditions and harmonizing. Simulation of the control network using the proteus software is subsequently undertaken in further research to design the control device. Using an automatic control set in the control simulation results reduced the need for manual intervention and let the system adjust the step filter automatically in response to changing network conditions. This showed that this method worked to lower harmonic distortion, increases the power factor through the filter used, and make the system more energy efficient overall. The study emphasizes the importance of applying sophisticated control strategies to manage harmonics efficiently, which ultimately paves the way to a cleaner and more reliable power grid. © Published under licence by IOP Publishing Ltd.

关键词： Power quality

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Instantaneous Velocity Vector Estimation Using a Single MIMO Radar Via Multi-Bounce Scattering

Instantaneous Velocity Vector Estimation Using a Single MIMO...

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2024 IEEE Conference on Computational Imaging Using Synthetic Apertures, CISA 2024

作者： Mehrotra, Nishant Pandey, Divyanshu Madhow, Upamanyu Mostofi, Yasamin Sabharwal, Ashutosh Rice University Department of Electrical & Computer Engineering HoustonTX United States University of California Department of Electrical & Computer Engineering Santa BarbaraCA United States

ISBN: (纸本)9798350308648

Multiple-input, multiple-output (MIMO) radars can estimate radial velocities of moving objects, but not their tangential velocities. In this paper, we propose to exploit multi-bounce scattering in the environment to form an effective multi-'look' synthetic aperture and enable estimation of a moving object's entire velocity vector - both tangential and radial velocities. The proposed approach enables instantaneous velocity vector estimation with a single MIMO radar, without additional sensors or assumptions about the object size. The only requirement of our approach is the existence of at least one resolvable multi-bounce path to the object from a static landmark in the environment. The approach is validated both in theory and simulation. © 2024 IEEE.

关键词： Radar imaging

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Carrier Frequency Offset Compensation for OSDM in Underwater Acoustic Communications: Theory and Experiments Using a Vector MIMO Modem 59

Carrier Frequency Offset Compensation for OSDM in Underwater...

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59th Annual Conference on Information Sciences and Systems, CISS 2025

作者： Qi, Zhuoran Rashid, Rami Abdi, Ali Pompili, Dario Rutgers University Department of Electrical and Computer Engineering New BrunswickNJ United States New Jersey Institute of Technology Department of Electrical and Computer Engineering NewarkNJ United States

ISBN: (纸本)9798331513269

Underwater acoustic communications suffer from time-varying multipath delay and different Doppler frequency offsets at different paths. To address these issues, a Carrier Frequency Offset Compensated Orthogonal Signal Division Multiplexing (CFO-C-OSDM) is proposed based on the basis expansion model for the time-varying channel. The CFO-C-OSDM method performs CFO compensation and channel estimation jointly, which manages a dynamic Doppler shift range characterized by a nonzero main CFO and residual CFOs caused by multipath propagation effectively. To validate the efficacy of this proposal, several rounds of emulations and experiments were conducted. The results show that the proposed CFO-C-OSDM proves to be more robust against doubly spread channels than existing techniques, such as D-OSDM and OSDM. © 2025 IEEE.

关键词： Underwater acoustic communication

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On Wireless Power Transfer Design Rectenna Circuit at 3.45GHz Suitable for Biasing 5G/FR1 Front-End Receivers

On Wireless Power Transfer Design Rectenna Circuit at 3.45GH...

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2024 Advances in Science and engineering Technology International Conferences, ASET 2024

作者： Vasileiadis, Nikolaos Bilal, Asif Iezekiel, Stavros Voudouris, Konstantinos University of West Attica Department of Electrical and Electronics Engineering Athens Greece University of Cyprus Department of Electrical and Computer Engineering Nicosia Cyprus

ISBN: (纸本)9798350344134

This paper presents the results of a wireless power transfer (WPT) rectifier connected to an antenna (rectenna), suitable to bias the front-end of a 5G receiver at FR1 frequency band. A patch antenna has been designed to receive the RF power at 3.45 GHz (Sub 6 GHz band), while the rectification process is based on a full wave voltage doubler rectifier. The matching circuit between the patch antenna and the rectifier is tuned for maximum power transfer with a varying load between 1kOhm to 5kOhm. When the antenna receives a power of - 10dBm, the rectifier produces a corresponding DC voltage of one Volt with an RF to DC power conversion efficiency of 38 The rectenna circuit is studied and designed using the PathWave Advanced Design System (ADS) tool. The proposed design fully covers the power needs of an RF front-end receiver at FR1 and paves the way for other practical implementations in various wireless energy harvesting applications. © 2024 IEEE.

关键词： Rectennas

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DGeC: Dynamically and Globally Enhanced Convolution

IEEE Transactions on Artificial Intelligence

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IEEE Transactions on Artificial Intelligence 2025年第4期6卷 921-933页

作者： Zhang, Zihang Liu, Yuling Zhou, Zhili Yang, Gaobo Liao, Xin Wu, Q. M. Jonathan Hunan University College of Computer Science and Electronic Engineering Changsha410082 China Guangzhou University Institute of Artificial Intelligence and Blockchain Guangzhou510006 China University of Windsor Department of Electrical and Computer Engineering WindsorON250101 Canada

We explore the reasons for the poorer feature extraction ability of vanilla convolution and discover that there mainly exist three key factors that restrict its representation capability, i.e., regular sampling, static aggregation, and limited receptive field. With the cost of extra parameters and computations, existing approaches merely alleviate part of the limitations. It drives us to seek a more lightweight operator to further improve the extracted image features. Through a closer examination of the convolution process, we discover that it is composed of two distinct interactions: spatial-wise interaction and channel-wise interaction. Based on this discovery, we decouple the convolutional blocks into these two interactions which not only reduces the parameters and computations but also enables a richer ensemble of interactions. Then, we propose the dynamically and globally enhanced convolution (DGeC), which includes several components as follows: a dynamic area perceptor block (DAP) that dynamically samples spatial cues, an adaptive global context block (AGC) that introduces the location-aware global image information, and a channel attention perceptor block (CAP) that merges different channel-wise features. The experiments on ImageNet for image classification and on COCO-2017 for object detection validate the effectiveness of DGeC. As a result, our proposed method consistently improves the performance with fewer parameters and computations. In particular, DGeC achieves a 3.1% improvement in top-1 accuracy on ImageNet dataset compared to ResNet50. Moreover, with Faster RCNN and RetinaNet, our DGeC-ResNet50 also consistently outperforms ResNet and ResNeXt. © 2024 IEEE.

关键词： Convolutional neural networks

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A Single Switch Ultra-High Step-Up DC-DC Converter Based on a Coupled Inductor with Two Output Ports for Renewable Energy Applications 9

A Single Switch Ultra-High Step-Up DC-DC Converter Based on ...

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9th International Conference on Technology and Energy Management, ICTEM 2024

作者： Aghakhanlou, Pouneh Falahi, Fatemeh Nadermohammadi, Ali Hashemzadeh, Seyed Majid Hosseini, Seyed Hossein Babaei, Ebrahim University of Tabriz Faculty of Electrical and Computer Engineering Tabriz Iran Qatar University Department of Electrical Engineering Doha Qatar

ISBN: (纸本)9798350329797

This study introduces an innovative design for a dual-output high-voltage DC-DC converter. The advantages of this converter encompass low input current ripple, reduced voltage stress on power switches and diodes, the presence of a common ground, and increased overall efficiency. The incorporation of a coupled inductor (CI) eliminates the need for a high-power switch duty cycle, thereby minimizing conduction losses and enhancing efficiency. Additionally, the lower voltage stresses enable the use of lower-rated semiconductors, resulting in cost and volume savings. The propounded converter is thoroughly examined, and simulation results in PSCAD/EMTDC are provided to validate the theoretical analyses. © 2024 IEEE.

关键词： DC-DC converters

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