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Applied Power Electronics Conference and Exposition

作者： Louelson A. Costa Montiê A. Vitorino Maurício B. R. Corrêa Post-Graduate Program in Electrical Engineering - PPgEE - COPELE Federal University of Campina Grande (UECG) Campina Grande - PB - Brazil Department of Electrical Engineering Federal University of Campina Grande (UECG) Campina Grande - PB - Brazil

ISBN: (纸本)9781509053674

In this work it is presented an AC-DC-AC synchronization technique that aims to reduce the DC-link current oscillation. The technique is applied to a reduced component count single-phase back-to-back Currente Source Converters (CSC). The deduction of how the DC-link oscillation is influenced by both input and output angles is presented. Experimental and simulation results are provided to validate the theoretical approach and to illustrate the synchronization phenomenon.

关键词： CSC illustrate synchronization phenomenon

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System identification of a pilot scale heat exchanger: A state-space realization approach 42

System identification of a pilot scale heat exchanger: A sta...

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42nd Conference of the Industrial Electronics Society, IECON 2016

作者： Lima, Rafael B. C. Barros, Péricles R. Acioli, George Post-graduate Program in Electrical Engineering PPgEE COPELE UFCG Brazil Electrical Engineering Department Fed. University of Campina Grande Brazil

It is presented a state-space realization approach for identification of a pilot scale heat exchanger plant. The proposed methodology is a computational efficient way to estimate state-space models from experimental d...

ISBN: (纸本)9781509034741

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Bio-inspired antenna for UWB systems 1

Bio-inspired antenna for UWB systems

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1st International Symposium on Instrumentation Systems, Circuits and Transducers, INSCIT 2016

作者： Da Silva, Paulo Fernandes Freire, Raimundo Carlos Silverio Serres, Alexandre Jean Rene Da Fonseca Silva, Paulo Henrique Costa E Silva, Jefferson Post-Graduate Program in Electrical Engineering -COPELE Federal University of Campina Grande UFCG Campina Grande Brazil Post-Graduate in Electrical Engineering PPGEE Federal Institute of Paraiba João Pessoa Brazil

ISBN: (纸本)9781509033027

In this paper is presented a new printed monopole antenna, bio-inspired by jasmine flower, that meets the Federal Communications Commission parameters for ultra-wideband systems. The design of the printed monopole antenna in jasmine flower has developed from a printed monopole antenna with circular geometry, with comparison results. The measured results of bio-inspired antenna in the jasmine flower showed compatibility with the parameters required by the FCC for ultra-wideband technology. It obtained bandwidth of 9.75 GHz, half-power beamwidth of 148 degrees, omnidirectional radiation pattern, gain of 5.99 dBi, power spectral density below -41.3 dBm across the bandwidth of ultra-wideband technology, small pulse distortion, and constant group delay, with variations of less than 2ns. © 2016 IEEE.

关键词： Bandwidth

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Asymmetrical cascaded three-phase AC-DC converters with injection transformers

Asymmetrical cascaded three-phase AC-DC converters with inje...

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IEEE Energy Conversion Congress and Exposition

作者： Joao Paulo R. A. Mello Cursino B. Jacobina Post-Graduate Program in Electrical Engineering (PPgEE/COPELE) Federal University of Campina Grande (UFCG) Campina Grande Paraíba Brazil Department of Electrical Engineering (DEE) Federal University of Campina Grande (UFCG) Campina Grande Paraíba Brazil

ISBN: (纸本)9781509029990

In this paper, three configurations of three-phase ac-dc cascaded converters are presented. They are referred as basic configurations, and are composed by two three-phase bridges, where the second bridge is cascaded to the first by means of a three-phase injection transformer. Basic configurations have one bidirectional option (composed only by IGBT switches), and two unidirectional ones (composed by IGBT and diodes). Their generalizations, which are composed by an indefinite number of cascaded three-phase bridges, are also proposed. Each additional cascaded bridge is a three-phase IGBT bridge and requires one additional three-phase injection transformer. Transformers turns ratios are calculated in order to maximize the number of levels produced in the ac side of each rectifier, enhancing power quality. Basic configurations are compared by means of simulations between themselves and with the conventional three-phase IGBT bridge, to show that proposed multilevel rectifiers present better performance in terms of ac power quality drew from the ac source, with lower semiconductor losses. Experimental results are also exposed for the basic configurations to validate them and show their feasibility.

关键词： Bridge circuits Insulated gate bipolar transistors Topology Semiconductor diodes Legged locomotion Integrated circuit modeling Mathematical model

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The use of classroom assessment based on multi-representation ability in Mechanics concept

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Journal of Physics: Conference Series 2019年第3期1157卷

作者： R Ekawati A Setiawan A R Wulan D Rusdiana Science Education Program School of Post Graduate Studies Universitas Pendidikan Indonesia Jl. Setiabudhi No. 229 Bandung 40154 Indonesia Department of Electrical Engineering Education Universitas Sultan Ageng Tirtayasa Jl. Raya Jakarta Km. 4 Serang 42124 Indonesia

This study aimed to describe the use of classroom assessment based on multi-representation ability. This research used descriptive research method. Research participants were 20 prospective physics teacher at one university in Indonesia, who attended basic physics course. Research instruments used questionnaires and essays test based on multi-representations. The results showed that the learning process only use summative assessment which focuses at the end of material and learning units. Learning process and assessment in Basic Physics Course used one or two representational modes, so those did not facilitate simultaneous representation modes. The result described that only 42% prospective physics teachers representation ability was good category (75-84 attainment) on mathematical representation. The recommendation of this study is to develope learning program, formative, and diagnostic assessment based multi-representation in Basics Physics Course.

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Analysis of the influence of the window used in the Short-Time Fourier Transform for High Impedance Fault detection 17

Analysis of the influence of the window used in the Short-Ti...

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17th International Conference on Harmonics and Quality of Power, ICHQP 2016

作者： Lima, Érica Mangueira Brito, Núbia Silva Dantas De Souza, Benemar Alencar Dos Santos, Wellinsílvio Costa De Andrade Fortunato, Laís Martins Post-Graduate Program in Electrical Engineering - PPgEE - COPELE Federal University of Campina Grande - UFCG Campina Grande Brazil Federal University of Campina Grande - UFCG Campina Grande Brazil

ISBN: (纸本)9781509037926

A study on the length and type of the window function used in the Short-Time Fourier Transform (STFT), along with its suitability to extract the harmonic content from a High Impedance Fault (HIF) current is presented on this paper. Additionally, a method to detect HIF based on the phase angle of the third harmonic current is developed. The proposed algorithm performance is evaluated by two database: one containing HIF simulated signals and other containing actual HIF oscillographic records. This paper presents the current state of this research, and, so far, the method is able to detect HIF occurring in different types of surfaces (wet and dry), as well as it is insusceptible to typical noises present in the real oscillograms. © 2016 IEEE.

关键词： Oscillographs

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Conceptual Design of Mobile Application for post-disaster Rapid Assessment of Damaged Houses

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IOP Conference Series: Earth and Environmental Science 2019年第1期273卷

作者： I Setyawati K Munadi Y Idris Syamsidik S Muchallil Post Graduate of Disaster Science Program Syiah Kuala University Banda Aceh Indonesia Tsunami and Disaster Mitigation Research Center (TDMRC) Syiah Kuala University Banda Aceh Indonesia Electrical and Computer Engineering Department Syiah Kuala University Banda Aceh Indonesia Civil Engineering Department Syiah Kuala University Banda Aceh Indonesia

The current rapid assessment of post-earthquake damaged houses has been done manually. The determination of the damage level is also very subjective. Moreover, the available time during a rapid assessment and limited number of enumerators lead to ineffective decisions for responses and assistances. There are several application had appeared trying to answer the problems, but still they have many types of data that need to be input and even need a lot of time to process. The system design to be simple, more user-friendly and time efficient to be operated during the assessment. This study is aimed to develop a conceptual design of a system to collect data of houses damaged by earthquake using mobile application which propose to work both online and offline. The system will consists of five components: mobile device, user, data center (web server and database), internet, and data processing center (administrator and manager to verify and analyze the data). The application design to be integrated with Google Maps containing concise data entry to facilitate users (trained users and common users) and to shorten the time of data collection. Final collected data will be presented through the website and perform descriptive and spatial analysis.

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Proposal for a Brazilian regulation of electromagnetic compatibility applied to automotive vehicles

Proposal for a Brazilian regulation of electromagnetic compa...

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2016 IEEE International Symposium on Electromagnetic Compatibility, EMC 2016

作者： De São José, Artur N. Resende, Úrsula C. De Menezes, Magno A. Ferreira, José H. Electrical Engineering Post Graduate Program Federal Center for Technological Education of Minas Gerais Belo Horizonte Brazil Electrical Engineering Post Graduate Program Pontifical Catholic University of Minas Gerais Belo Horizonte Brazil

ISBN: (纸本)9781509014415

For the last two decades, electro-electronic components have become more and more integrated into automotive vehicles, with an increasing importance in essential functions implying the safe overall operation of the car. Although these innovations come as a car performance improvement, it can also have adverse effects (some related to safety) in case of malfunction. These undesirable behaviors can be caused by Electromagnetic Interferences (EMI), and the probability increases when a large number of electro-electronic components act together in the same environment, causing failures that may damage part or the whole system. In Brazil, the Electromagnetic Compatibility (EMC) validation of these systems is currently a relative option and the decision of testing or not (and how deep) is up to each car manufacturer. Moreover, most of these validations are still realized out of Brazil, turning developments more expensive, more time-consuming and underusing Brazilian metrology chain. This paper proposes a study of the Brazilian automotive EMC validation context and a comparison with the worldwide scenario, taking into account its technical, economic and social impacts and bringing arguments to discuss a possible federal regulation. This electronic document is a 'live' template and already defines the components of your paper [title, text, heads, etc.] in its style sheet. © 2016 IEEE.

关键词： Electromagnetic compatibility

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Implementation of Augmented Reality in Pretend Play Therapy for Children with Autism Spectrum Disorder

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Journal of Physics: Conference Series 2019年第1期1235卷

作者： M F Syahputra A P Angkasih S Purnamawati U Andayani D Abdullah S Sriadhi A Iskandar T M Rosida J Fitriany I N Sari M D Utama R F Nanuru Department of Information Technology Faculty of Computer Science and Information Technology Universitas Sumatera Utara Medan Indonesia Department of Informatics Universitas Malikussaleh Aceh Utara Indonesia Department of Electrical Engineering Universitas Negeri Medan Indonesia Informatics Engineering STMIK AKBA Makassar Indonesia Graduate Program in Scientific Psychology Universitas Kristen Maranatha Indonesia Department of Pediatric Universitas Malikussaleh Aceh Utara Indonesia Departement of Social Science Education Program Post Graduate Program Universitas Kanjuruhan Malang Malang Indonesia Faculty of Social and Political Science Universitas Kristen Indonesia Maluku Indonesia Universitas Kristen Indonesia Maluku Ambon Indonesia

Autism Spectrum Disorder is a pervasive developmental disorder that will affect children in terms of interpersonal communication, social interaction, and imaginative levels in play. Many therapies to help the motor neuron performance is one of them Pretend Play. Pretend Play is a therapy that invites children in playing to demonstrate something else and tell how to use objects that are considered in the child's imagination. However, in the era of highly developed technology, many fields have used the Augmented Reality method as a visualization of various aspects. With this method researchers will present the therapeutic visualization of the block to 3D transportation tool that is useful for strengthening motor nerves and visual strength of the child. The system can run well during marker detection, marker movement, and 3D object display with the accuracy of precision angle and distance between virtual world with real world reach 100% with angle 0 at distance 31 cm and the maximum distance from the marker is 46 cm and the maximum angle is 30˚.

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Modeling and control of a XY positioning table 12

Modeling and control of a XY positioning table

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12th IEEE International Conference on Industry Applications, INDUSCON 2016

作者： Moreira, Lucas J. Da S. Dias, Christian C. Lima, Rafael B. C. Barros, Pericles R. Acioli, George Post-Graduate Program in Electrical Engineering-PPgEE COPELE Federal University of Campina Grande-UFCG Campina Grande PB58429-900 Brazil Graduate Program in Electrical Engineering-PGEE Federal University of Campina Grande-UFCG Campina Grande PB58429-900 Brazil Electrical Engineering Department-DEE Federal University of Campina Grande-UFCG Campina Grande PB58429-900 Brazil

ISBN: (纸本)9781509051274

This paper is about modeling and control of a XY positioning table. It is described the construction and instrumentation of a double axis positioning system. It is developed a general electromechanical model, followed by the identification of simplified models for control purposes. At last, it is proposed a PID control strategy, tuned by Internal Model Control (IMC) technique. © 2016 IEEE.

关键词： Three term control systems

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