IEEE Latin America Transactions最新文献_第3页

An Alternative Design of a Compact and Portable Six-Port Reflectometer for 2.4 GHz Reflection Coefficient Measurements

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-02-10 DOI: 10.1109/TLA.2025.10879194

Gerardo Hernandez Veliz;Felipe Alejandro Uribe Campos;Carlos Alberto Bonilla Barragán

引用次数: 0

Optimal Integration of EV Charging Stations and Capacitors for Net Present Value Maximization in Distribution Network

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-02-10 DOI: 10.1109/TLA.2025.10879176

B. Vinod Kumar;Aneesa Farhan M A

{"title":"Optimal Integration of EV Charging Stations and Capacitors for Net Present Value Maximization in Distribution Network","authors":"B. Vinod Kumar;Aneesa Farhan M A","doi":"10.1109/TLA.2025.10879176","DOIUrl":"https://doi.org/10.1109/TLA.2025.10879176","url":null,"abstract":"The widespread adoption of electric vehicles (EVs) is crucial for reducing greenhouse gas emissions from traditional vehicles. Central to this adoption is the strategic deployment of electric vehicle charging stations (EVCS), whose improper positioning can pose challenges to electrical networks and utility operators. This paper introduces a novel hybrid approach for optimizing the placement of EVCS and capacitors (CAP) in the distribution network (DN) to mitigate active power loss (APL) and enhance operational efficiency. The methodology includes the optimal placement of CAP banks and EVCS across the network, which is evaluated using the Net Present Value (NPV) criterion. Additionally, the study comprehensively considers the integration of vehicle-to-grid (V2G) capabilities, enhancing network reliability. The proposed hybrid algorithm combines the genetic algorithm (GA) and particle swarm optimization (PSO), i.e., HGAPSO, which leverages their respective strengths in exploration and exploitation. A comprehensive sensitivity analysis is conducted for the IEEE 33, 69, 85, 118, and Brazil 136- bus systems, focusing on cost variables such as energy prices, maintenance costs, and system parameters. This analysis further validates the robustness of the proposed approach, demonstrating significant reductions in APL and maximization of net profit. Comparative results verify the superiority of the hybrid approach over conventional GA and PSO in optimizing the locations of charging stations and reactive power sources within networks.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 3","pages":"239-250"},"PeriodicalIF":1.3,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10879176","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Smart Grid Insulator Detection Network Improved based on YOLOv8

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-01-23 DOI: 10.1109/TLA.2025.10851364

Tao wang;Nan Zhang;Wancai Zhang;Wenqing Yang;Wei Zhang

引用次数: 0

Towards MEC-Servers Deployment for Multimedia Streaming over 5G CRAN-Architecture Networks

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-01-23 DOI: 10.1109/TLA.2025.10851363

Carlo Kleber da Silva Rodrigues;Vladimir Rocha;Rodrigo A. C. da Silva

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Implementation of a Reliability-Centered Maintenance Plan for Fire-Tube Boilers: A Case Study in the Textile Industry

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-01-23 DOI: 10.1109/TLA.2025.10851396

Erick Mejia-Portillo;Sofia Guevara-Barrera;Juan Aguilar-Rosa;Yakdiel Rodriguez-Gallo

{"title":"Implementation of a Reliability-Centered Maintenance Plan for Fire-Tube Boilers: A Case Study in the Textile Industry","authors":"Erick Mejia-Portillo;Sofia Guevara-Barrera;Juan Aguilar-Rosa;Yakdiel Rodriguez-Gallo","doi":"10.1109/TLA.2025.10851396","DOIUrl":"https://doi.org/10.1109/TLA.2025.10851396","url":null,"abstract":"Reliability-Centered Maintenance (RCM) application in steam systems aims to prevent potential failures by understanding their causes and consequences and determining necessary actions to preserve physical assets. The textile company frequently experiences unplanned stoppages due to steam boiler failures. This study proposes implementing an RCM plan to optimize the maintenance program for fire-tube boilers. A criticality analysis of boiler area equipment was conducted using the Analytical Hierarchy Process (AHP). Failure modes and effects were assessed, and the Risk Weighting Number (RWN) was calculated. Maintenance tasks were assigned using the RCM diagram based on the RWN value. The reliability block diagram of the boiler system was designed, and optimal time intervals were determined using the Weibull distribution for critical components. The literature review found no prior studies applying RCM to fire-tube boilers in the textile industry. The proposed maintenance plan's reliability, availability, and economic viability were assessed in a case study, showing a 16.15% increase in reliability and a 0.004% increase in availability. Additionally, annual maintenance cost savings of up to 27.54% could be achieved. This novel RCM methodology optimizes fire-tube boiler maintenance plans, overcomes classical model limitations, and underscores the importance of reliability analysis for effective preventive maintenance, with potential applications to other systems in the textile industry.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 2","pages":"104-113"},"PeriodicalIF":1.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10851396","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-Machine Power System Simulation via Differential Transformation

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-01-23 DOI: 10.1109/TLA.2025.10851365

Ricardo Galarza-Villa;Alejandro Zamora-Mendez;Carlos Perez-Rojas;Mario R. Arrieta Paternina

{"title":"Multi-Machine Power System Simulation via Differential Transformation","authors":"Ricardo Galarza-Villa;Alejandro Zamora-Mendez;Carlos Perez-Rojas;Mario R. Arrieta Paternina","doi":"10.1109/TLA.2025.10851365","DOIUrl":"https://doi.org/10.1109/TLA.2025.10851365","url":null,"abstract":"In this paper, the differential transformation (DT) is applied to the dynamic analysis of multi-machine systems, whose solution is numerically obtained by solving a set of differential-algebraic equations that represent the power system dynamics. This method is an algorithm to calculate the Taylor coefficients in a fast and efficient way, making the Taylor method competitive against traditional numerical integration methods such as the modified Euler (ME) method and trapezoidal rule (TR). Thus, the DT's rules for solving differential-algebraic equations of large multi-machine power systems are applied. To exhibit the DT's performance, the power system toolbox (PST) is adopted and compared against other integration methods for multi-machine power system simulation. Finally, time-domain simulations on the WECC and Mexican systems are performed by means of DT and compared with ME and TR methods to demonstrate the effectiveness of the proposal, showcasing that our proposal improves up to 12 times the traditional methods.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 2","pages":"153-159"},"PeriodicalIF":1.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10851365","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonlinear trajectory tracking with a 6DOF AUV using an MRAFC controller

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-01-23 DOI: 10.1109/TLA.2025.10851362

Lugui Paolo Fenco Bravo;Carlos Gustavo Pérez Zuñiga

{"title":"Nonlinear trajectory tracking with a 6DOF AUV using an MRAFC controller","authors":"Lugui Paolo Fenco Bravo;Carlos Gustavo Pérez Zuñiga","doi":"10.1109/TLA.2025.10851362","DOIUrl":"https://doi.org/10.1109/TLA.2025.10851362","url":null,"abstract":"New technologies such as AUVs are used for marine exploration, considered a widespread solution in ocean monitoring, whose conventional controllers such as PID or LQR present inaccuracy in the path traversal and instability when faced with disturbances. Such that, in order to achieve sufficient precision in the path traversal and to be able to measure seabed parameters, the design of a Reference Model Adaptive Fuzzy Controller (MRAFC) is proposed. Which is a control strategy based on a combination of fuzzy systems theories using the Takagy- Sugeno model and adaptive control laws, respecting Lyapunovs nonlinear control theories to generate a robust control against inherent disturbances of the environment. Thus, the results obtained when comparing the MRAFC controller versus LQR and MRAC test controllers show better performance in different scenarios. Where the first scenario is ideal conditions, whose result is similar when the AUV is close to the origin and unstable in the LQR controller when it moves away from the design convergence point. A second scenario is considered the disturbances, obtaining unstable behaviors from the moment of the disturbance in the LQR and MRAC controllers, observing overstresses in the control variable causing chattering effect. While the last scenario is dedicated to recreate an environment with noise affecting the reading of the vehicle variables where only the MRAFC control law is able to compensate and control in a hostile environment. Therefore, based on the results of this research it is possible to identify the MRAFC controller as suitable for AUV where precision and stability are necessary.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 2","pages":"160-171"},"PeriodicalIF":1.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10851362","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Table of Contents February 2025

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-01-23 DOI: 10.1109/TLA.2025.10851465

引用次数: 0

Controlled Wireless Channel using Multi-Antenna Multi-IRS Assisted Communication System: A Comprehensive Performance Analysis

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-01-23 DOI: 10.1109/TLA.2025.10851399

Suresh Penchala;Shravan Kumar Bandari;V. Venkata Mani;Anastasios Drosopoulos

{"title":"Controlled Wireless Channel using Multi-Antenna Multi-IRS Assisted Communication System: A Comprehensive Performance Analysis","authors":"Suresh Penchala;Shravan Kumar Bandari;V. Venkata Mani;Anastasios Drosopoulos","doi":"10.1109/TLA.2025.10851399","DOIUrl":"https://doi.org/10.1109/TLA.2025.10851399","url":null,"abstract":"To address societal demands, upcoming communication systems must manage multiple tasks simultaneously, thereby increasing circuit complexity and error rates. These challenges can be mitigated with intelligent reflecting surface (IRS) by utilizing cost-effective reconfigurable metamaterials to manipulate wireless propagation channels. The study investigates the performance analysis of a multi-antenna multi-IRS assisted communication system in a generalized fading channel assuming non-line-of-sight (NLOS) scenario between the base station (BS) and the user equipment (UE) using the moment-generating function (MGF) approach. The theoretical expressions for the bit error rate (BER), and Ergodic capacity (EC) are derived for the system model under consideration. Energy efficiency (EE) was also evaluated for completeness. A mean Monte-Carlo (MC) transceiver simulation test bed is provided to validate the obtained theoretical expressions. The derived theoretical formulae cover Nakagami-m, Nakagami-q, and Rayleigh channels as corner cases to cover the practical indoor and outdoor scenarios. Improved performance is observed with more antennas at the BS and UE, more IRSs, more reflecting elements, IRS placement near BS or UE, high , and low values. It was noticed that the triple-IRS system offers better BER, enhanced EC, more energy efficient than the single-IRS system, and achieves 8 dB gain at BER point of 105, 2.82 (b/s/Hz) improvement in EC, and 3.5 times energy efficient at average achievable rate 25 (b/s/Hz). Moreover, employing multiple antennas achieves 6 dB improvement at BER value of 105, enhanced achievable rate, and in turn improves energy efficiency. Lastly, placing the IRS either near BS or UE is more beneficial than setting it at mid-way where the BER reduces from 102 to 109, EC of 2 (b/s/Hz) gain, and can design a 3 times better energy efficient system.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 2","pages":"114-124"},"PeriodicalIF":1.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10851399","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Economical Assessment of Industrial Motor Replacement from the Perspective of Life Cycle Cost Analysis

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-01-23 DOI: 10.1109/TLA.2025.10851461

Antônio José Nogueira Jr.;Rogério Silva;Victor Aguiar;Ricardo Pontes

{"title":"Economical Assessment of Industrial Motor Replacement from the Perspective of Life Cycle Cost Analysis","authors":"Antônio José Nogueira Jr.;Rogério Silva;Victor Aguiar;Ricardo Pontes","doi":"10.1109/TLA.2025.10851461","DOIUrl":"https://doi.org/10.1109/TLA.2025.10851461","url":null,"abstract":"The increasing concern about climate change has underpinned global efforts toward the reduction of greenhouse gas emissions (GHGs). In this sense, energy efficiency actions (EEAs) are interesting solutions that have been expanding over the years in the industrial sector. Replacing low-efficiency electric motors with high-efficiency counterparts is a ubiquitous action in this sense. However, they still have a high cost, making it necessary to perform a proper technical-economic analysis to determine the feasibility of the action. For this purpose, life cycle cost analysis (LCCA) has proven to be an excellent alternative for economic viability verification of EEAs because this methodology takes into account expenses throughout the entire life cycle of the project or equipment. Considering decision-making involving optimization, this work proposes a methodology to calculate the present residual value at the end of the life cycle, considering the service time of motors and the chosen study period for the project. Two case studies involving predicted theoretical situations are simulated, and the impact of service time on the replacement of a 50-CV, four-pole motor and, 40-CV in a local industry is assessed. It is observed that Net Savings are affected by the study period when replacement occurs in terms of a low-power high-efficiency motor since such action can lead to different service times. Overall, the improved LCC applied to induction motors replacement proves to be a good method for predicting the residual value, whereas the results show that different service times are necessary to maximize net savings and the residual cost in the same case.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 2","pages":"144-152"},"PeriodicalIF":1.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10851461","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0