检索结果-内蒙古大学图书馆

IEEE Energy Conversion Congress and Exposition, ECCE

作者： Amanda P. Monteiro Cursino B. Jacobina Bahia Filipe A. C. Sousa Reuben P. R. Post-Graduate Program in Electrical Engineering - PPgEE/COPELE Federal University of Campina Grande (UFCG) Campina Grande Paraíba Brazil Federal University of Bahia (UFBA) Salvador Brazil

This paper proposes two three-phase five-level power conversion systems. They can be employed in a wind energy converter system (WECS) application as the machine side rectifier, connected to the permanent magnet synchronous machine (PMSM) by an open-end winding (OEW) arrangement. Compared to the conventional topology, proposed ones lack the use of six clamping diodes in their structures. Even though, they also achieve the same power quality as the conventional one. Besides, proposed configurations may have fewer semiconductor devices in the current path, providing slightly lower power losses. Furthermore, the control system used ensures the synchronization between voltage and current, providing a high power factor operation. The converter equations, pulse-width modulation technique, and control strategy are detailed. Simulation and experimental results are provided in order to confirm their performance and feasibility.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Scalable modeling and synthesis of on-chip spiral inductors 4

Scalable modeling and synthesis of on-chip spiral inductors

引用

4th International Symposium on Instrumentation Systems, Circuits and Transducers, INSCIT 2019

作者： Bernardo, Marcos Gomes Freire, Raimundo Carlos S. De Souza, Antonio Augusto Lisboa Melo, Erico Castro A. Post-Graduation Program in Electrical Engineering PPgEE/UFCG Federal University of Campina Grande UFCG Campina Grande PB Brazil Federal University of Paraiba UFPB João Pessoa PB Brazil

ISBN: (纸本)9781728121093

In this paper, an efficient synthesis for integrated spiral inductors based on particle swarm optimization is presented. The synthesis/optimization process aims to determine the inductor layout parameters that maximize the quality factor while considering the imposed restrictions (project specifications). The spiral inductors are modeled using a double-π scalable model, in which the design parameters of inductor are taken as input. All the elements of the scalable model are calculated from the scalable expressions and process parameters. Particle swarm optimization is used to explore the design space and resolution of the optimization problem. Three design examples of inductors with inductance values of 3 nH, 5.5 nH and 8 nH, and with operating frequency of 2 GHz, 3.5 GHz and 5 GHz are used to evaluate the synthesis process. The obtained results confirm the validity of the adopted methodology and the PSO efficiency in determining the most adequate inductor structure to the project specifications. © 2019 IEEE.

关键词： Particle swarm optimization (PSO)

来源：评论

学校读者我要写书评

暂无评论

A Single-Phase Five-Level Grid-Connected Inverter for Photovoltaic Applications

A Single-Phase Five-Level Grid-Connected Inverter for Photov...

引用

IEEE Energy Conversion Congress and Exposition, ECCE

作者： Jadyson J. Silva A. C. Bahia Filipe P. N. Tahim Andre Darlan A. Fernandes Fabiano F. Costa Post-graduate Program in Electrical Engineering PPGEE- UFBA Salvador Bahia Brazil Federal University of Bahia- UFBA Salvador Bahia Brazil Federal University Federal University of Paraíba - UFPB João Pessoa Paraíba Brazi

With the increasing energy demands and environmental impacts from conventional energy sources, especially fossil fuels, renewable energy sources are increasingly popular. Among which, photovoltaic (PV) energy generation systems stands out due to their ease of installation, maintenance and low acquisition cost. Single-phase PV systems connected to the grid are commonly used in small and medium-sized residential and commercial installations. This paper proposes a single-phase five-level inverter for grid-connected PV systems. A PWM technique is applied to balance the voltages across the dc-link capacitors. Moreover, the technique has a suitable performance in terms of conducting and switching losses. The results shows the effectiveness of the technique for injecting suitable low distorted currents into the grid. Moreover, the system operates correctly to balance the voltages across the dc-link capacitors and under abrupt changes of the available power from the PV panels.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Three-Phase Integrated PFC AC-AC Half-Bridge Boost Rectifier and Class D Resonant Inverter with Weak Coupled Coils for IH Application

Three-Phase Integrated PFC AC-AC Half-Bridge Boost Rectifier...

引用

Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC)

作者： Ruan C. M. Gomes Montiê A. Vitorino Maurício B. R. Corrêa Post-Graduate Program in Electrical Engineering (PPgEE–COPELE) Federal University of Campina Grande (UFCG) Campina Grande PB Brazil

ISBN: (数字)9781728148298

ISBN: (纸本)9781728148304

This paper presents a three-phase integrated PFC AC-AC resonant inverter with boost effect for Induction Heating (IH) Application. This converter is composed by three independent half-bridge boost rectifier and class D resonant inverters with non-smoothed DC link that achieve high power factor operation. The magnetic coupling of the three coils was measured for characterizing the resonant behavior of the arrangement. Experimental results validate the modes of operation with ZVS and the converter performance in the entire power input range (PF and THD).

关键词：

来源：评论

学校读者我要写书评

暂无评论

Reinforcement Learning-Based Edge Caching for IoT in Compute-First Networks

引用

IEEE Transactions on Consumer Electronics 2025年

作者： Asmat, Hamid Din, Ikram Ud Almogren, Ahmad Rodrigues, Joel J. P. C. Department of Information Technology University of Haripur Haripur22620 Pakistan King Saud University College of Computer and Information Sciences Chair of Cyber Security Department of Computer Science Riyadh11633 Saudi Arabia Post-graduation Program in Electrical Engineering Teresina Brazil

6G networks require ultra-low latency and intelligent resource management in IoT environments. Compute-First Networking (CFN), integrating distributed computing and edge caching, addresses backhaul congestion. This paper proposes CaRL, a DRL-based caching framework using TD3 algorithm. CaRL optimizes cache placement at edge nodes by incorporating real-time network state, content popularity, and resource utilization. Simulations show CaRL improves cache hit ratio, reduces latency, and enhances bandwidth efficiency, and ensures secure caching decisions under dynamic network conditions. Unlike existing methods, CaRL adapts to dynamic network conditions by integrating latency, CPU, and memory metrics, demonstrating scalability and adaptability in CFN-driven 6G environments. © 1975-2011 IEEE.

关键词： Edge computing

来源：评论

学校读者我要写书评

暂无评论

Estimation of channel delay in analog-to-information converters

Estimation of channel delay in analog-to-information convert...

引用

2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019

作者： Arruda, Bruno W.S. Gurjao, Edmar C. Torres, Luis F.N.M. Reist, Vanderson L. Freire, Raimundo C.S. Post-Graduation Program in Electrical Engineering COPELE Federal University of Campina Grande Campina Grande PB Brazil CDMI - IFAM Manaus AM Brazil

ISBN: (纸本)9781728103976

Analog-to-Information Converter (AIC) is the physical implementation of Compressed Sensing (CS) systems to digitize signals directly from the analog domain. Due to non-idealities of components AIC hardware needs a calibration step to adjust parameters before its utilization. In this paper, we consider a theoretical linear model of an AIC architecture composed by parallel channels that suffers from synchronization problems between the input signal and the internal signals used to perform the measurement. Using a radar inspired technique we propose a method to estimate the delay between these signals. Obtained results show the accuracy of the proposed method and its potential to be used in AIC calibration techniques. © 2019 IEEE

关键词： Compressed sensing

来源：评论

学校读者我要写书评

暂无评论

Flexible UHF RFID tag gain enhancement using metamaterial structure 4

Flexible UHF RFID tag gain enhancement using metamaterial st...

引用

4th International Symposium on Instrumentation Systems, Circuits and Transducers, INSCIT 2019

作者： Araujo, Jessyca Iasmyn Lucena Morais, Samuel Medeiros Araujo Serres, Alexandre Jean Rene De Albuquerque, Camila Caroline Rodrigues De Freitas Serres, Georgina Karla De Souza Santos, Danilo Freire E Silva, Carolina Cavalcanti Pedrosa De Oliveira, Alexandre M. Post-Graduation Program in Electrical Engineering Federal University of Campina Grande Campina Grande Brazil Graduation Program in Electrical Engineering Federal University of Campina Grande Campina Grande Brazil Maxwell Laboratory of Microwaves and Applied Electromagnetism Federal Institute of São Paulo Cubatão Brazil

ISBN: (纸本)9781728121093

In this paper, we propose a flexible passive RFID tag using a Complementary Split Ring Resonator (CSRR) structure for antenna gain enhancement. The tag is based on a folded dipole antenna and 8 CSRR cells in the same layer, on a polyamide substrate. Simulation results performed in the ANSYS Electronics Desktop software are presented. It has been shown that with the insertion of the metamaterial structure there is a considerable improvement in some parameters of the antenna, such as directivity, efficiency and, consequently, gain. The gain of the antenna increased, approximately, from -6.8 dB to 5.3 dB. In addition, a read range of approximately 24.21 m was obtained at the operating frequency (915 MHz) with the metamaterial-based antenna. © 2019 IEEE.

关键词： Metamaterials

来源：评论

学校读者我要写书评

暂无评论

Dual Vienna Rectifiers with a Single Dc-link for Wind Energy Conversion System Applications

Dual Vienna Rectifiers with a Single Dc-link for Wind Energy...

引用

IEEE Energy Conversion Congress and Exposition

作者： Amanda P. Monteiro Cursino B. Jacobina Filipe A. C. Bahia Reuben P. R. Sousa PPgEE/COPELE Post-Graduate Program in Electrical Engineering Federal University of Campina Grande (UFCG) Campina Grande Paraíba Brazil Federal University of Bahia (UFBA) Salvador Bahia Brazil

ISBN: (数字)9781728158266

ISBN: (纸本)9781728158273

In this paper, dual Vienna rectifiers are proposed for Wind Energy Conversion System (WECS) applications with Open-End Winding (OEW) Permanent Magnet Synchronous Generator (PMSG). Due to the reduced number of controlled switches, the proposed topologies have reduced costs and high reliability. Besides, they provide a better power quality using the same number of controlled switches than conventional structures presented in the literature, making them very attractive options for industry applications. The system model, space vector modulation, and control strategy are given. Simulation results are provided in order to validate their performance and feasibility.

关键词： Topology Voltage control Switches Power quality Power electronics

来源：评论

学校读者我要写书评

暂无评论

Multilevel Single-Phase Four-Leg AC-DC-AC Converter

Multilevel Single-Phase Four-Leg AC-DC-AC Converter

引用

IEEE Energy Conversion Congress and Exposition

作者： Phelipe L. S. Rodrigues Cursino B. Jacobina Antonio M. N. Lima Post-Graduate Program in Electrical Engineering - PPgEE – COPELE Federal University of Campina Grande (UFCG) Paraíba Brazil Federal University of Campina Grande (UFCG) Paraíba Brazil

ISBN: (数字)9781728158266

ISBN: (纸本)9781728158273

This paper presents a single-phase four-leg ac-dc-ac converter, with one leg shared by the grid side and the load side. The proposed topology can generate input and output voltages with seven levels, presenting reduced harmonic distortion, in addition to using reduced voltage switches. The space-vector pulsewidth modulation strategy (SV-PWM), the control technique, the system model, and a comparison with a three-leg topology will be presented. As for performance comparison parameters, harmonic distortion in currents and voltages, the average switching frequency, and semiconductor losses will be used. The topology was simulated and assembled in the laboratory to obtain experimental results.

关键词： Topology Legged locomotion Switching frequency Mathematical model Switches Pulse width modulation Load modeling

来源：评论

学校读者我要写书评

暂无评论

A low cost data acquisition system based on wireless sensor networks for environmental monitoring in landfills 4

A low cost data acquisition system based on wireless sensor ...

引用

4th International Symposium on Instrumentation Systems, Circuits and Transducers, INSCIT 2019

作者： Melo, Erico C.A. Freire, Raimundo C.S. Santana, Ewaldo E.C. Gurjao, Edmar C. Bernardo, Marcos G. Post-Graduation Program in Electrical Engineering - COPELE Federal University of Campina Grande Campina Grande PB Brazil State University of Maranhão São Luiz MA Brazil

ISBN: (纸本)9781728121093

This paper proposes a data acquisition system based on wireless sensor networks to measure the methane concentration level in a sanitary landfill, and a sensor node prototype for this application. The sensor node was designed to measure temperature, relative humidity and methane concentration. Based on the IEEE 802.15.4 standard, the proposed system allows a continuous monitoring of the methane emissions and reduces the exposition of workers to the hazardous environmental conditions of the landfill. A sensor node prototype was developed and tested as a demonstration of the feasibility of the system. © 2019 IEEE.

关键词： Land fill

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：