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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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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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Appropriateness of Water Hyacint and Rice Husk as Filler Materials for Resin Polymer Insulation

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Journal of Physics: Conference Series 2018年第1期1090卷

作者： Trisna Amelia Fitriah Salama Manjang Ikhlas Kitta Electrical Engineering Department Jl. Perintis Kemerdekaan KM. 10 Makassar Sulawesi Selatan 90245Indonesia Post Graduate Program Of Hasanuddin University Jl. Perintis Kemerdekaan KM. 10 Makassar Sulawesi Selatan 90245Indonesia

The use of natural fibers as a filler in the industry still continue to be developed, given its eco-friendly and contains material which is great. This research was conducted to find out the influence of boiled water and rice husk as filler material in epoxy resins. The making of the specimen using the method of hand lay-up with each variation of filler 10%-40% of the total weight of material test and the specimen without filler 0% for contrast. Polymer materials used i.e. epoxy resins. Testing is done namely pull-test, test volume resistivity and surface resistivity. Pull-test is performed using standard ASTM D-638 and resistivity test using standard ASTM D 257. The test results showed that the maximum volume resistivity values reached in the levels of water hyacinth 20% whereas on rice husk volume resistivity increase continues to occur until levels of 40% of the epoxy resins. Surface resistivity continues to increase in the levels of water hyacinth reaches 20% on epoxy resins as well as the addition of a filler rice husk. The tensile strength of the epoxy resins materials has decreased with the addition of water hyacinth and rice husk. The value of the maximum attainable tensile strength on the composition of the filler is 20%. With increasing levels of water hyacinth and rice husk in epoxy resins, the nature of the material brittle epoxy resins increase or an increase in the hardness of epoxy resin resulting in fragility.

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The Effect of Grounding Resistance About Back Flashover on 150 KV Tranmission Network in Main Station of Sungguminasa - Tallasa (Makassar)

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Journal of Physics: Conference Series 2018年第1期1090卷

作者： Naomi Lembang Salama Manjang Ikhlas Kitta Electrical Engineering Department Jl. Perintis Kemerdekaan KM. 10 Makassar Sulawesi Selatan 90245 Indonesia Post Graduate Program Of Hasanuddin University Jl. Perintis Kemerdekaan KM. 10 Makassar Sulawesi Selatan 90245 Indonesia

Lightningsurge on transmission network is a natural problem that affecting electricity voltage. This impact on the occurrence of equipment damages as result of back flashover. Back flashover causes an impulse wave due to the increase of voltage on the transmission and has a large grounding resistance value. There has been a disturbance in the transmission system SULSELRABAR causing black out on Tuesday, January 19th, 2016 at 14:13 pm. The disturbance occurred along with the rain and strong winds accompanied by lightning which caused the load loss of 746 MW. The research was conducted to determine the occurrence of direct lightning strikes on each tower, the effect of grounding resistance to back flashover on150 kV transmission network in main station of Sungguminasa - Tallasa, using modeling simulation of peak menara transmission network 150 kV in main station of Sungguminasa - Tallasa with software ATPDraw (Alternative Transient program). The simulation results depicting one of the phase wire reach the peak current of 359.89 MA. In this condition occurs disruption that causing the impulse voltage and back flashover with disturbance current 22.65 kA. The large of grounding resistance has an average voltage exceeding the capacity limit from 1001.54 kV to 1042.31 kV. Based on the calculation, the impulse voltage obtained is 5.271 MV close to simulation result of ATPDraw(Alternative Transient program) by 4.530 MV. The calculation of the current wave when there is lightning disturbance in the transmission line with a peak current of 60 kA and the wave front time of 1 set, obtained the highest value that is on the tower 39 the grounding value of 5.4 Ω, the grounding value obtained reflection coefficient of -0.937 and insulator voltage at 957.036 kV, the results of this research held the measurement of tower 39 using Megger Det4tcr and obtained the grounding value on the tower feet of 12.22 and 9.97 ohm. What makes this case interesting is that the installation is located

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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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A stochastic method for characterization of soft magnetic material with a damped LC circuit 17

A stochastic method for characterization of soft magnetic ma...

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17th Biennial IEEE Conference on Electromagnetic Field Computation, IEEE CEFC 2016

作者： Eckert, Paulo R. Righi, Luiz A. Filho, Aly F. Flores Kanieski, Joao M. Federal University of Rio Grande do Sul Post-Graduate Program in Electrical Engineering RS Brazil Federal University of Santa Maria Department of Electromechanical and Power Systems RS Brazil

ISBN: (纸本)9781509010325

This paper presents a method to determine hysteresis parameters of an inductor's core with a closed magnetic circuit based on electric current and voltage curves of a damped LC circuit. The proposed procedure makes use of the concept of hysteresis modeling by separating the magnetic field into four components, which can be linearized in terms of its parameters. Thus, curves can be adjusted with a stochastic method in order to match experimental ones, allowing for determination of hysteresis parameters. © 2016 IEEE.

关键词： Hysteresis

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

Proposal for a Brazilian regulation of electromagnetic compa...

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IEEE International Symposium on Electromagnetic Compatibility (EMC)

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

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.

关键词： Electromagnetic compatibility Automotive engineering Standards Automobiles Industries Government

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Bio-inspired antenna for UWB systems

Bio-inspired antenna for UWB systems

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International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)

作者： Paulo Fernandes da Silva Raimundo Carlos Silvério Freire Alexandre Jean René Serres Paulo Henrique Da Fonseca Silva Jefferson Costa e Silva Post-Graduate Program in Electrical Engineering - COPELE Federal University of Campina Grande UFCG Brazil Post-Graduate Program in Electrical Engineering - COPELE Federal University of Campina Grande UFCG Campina Grande Brazil Universidade Federal de Campina Grande Campina Grande PB BR Post-Graduate in Electrical Engineering PPGEE Federal Institute of Paraiba IFPB Brazil Post-Graduate in Electrical Engineering PPGEE Federal Institute of Paraiba IFPB Joao Pessoa Brazil

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.

关键词： FCC Ultra wideband antennas Antenna measurements Bandwidth Geometry Distortion Frequency measurement

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Shunt active power filter based on cascaded transformers coupled with three-phase bridge converters 31

Shunt active power filter based on cascaded transformers cou...

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31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016

作者： De Almeida Carlos, Gregory A. Jacobina, Cursino B. Méllo, João Paulo R. A. Dos Santos, Euzeli C. Post-Graduate Program in Electrical Engineering - PPgEE - Copele Campina Grande PB58429-900 Brazil Campina Grande PB58429-900 Brazil Palmeira dos Índios AL57601-220 Brazil IndianapolisIN46202 United States

ISBN: (纸本)9781467383936

This paper proposes a multilevel shunt active power filter (SAPF) to deal with either harmonic currents compensation or reactive power compensation. Such a device can reduce the harmonic distortion at the grid currents provided by non-linear loads located in stiff systems. The proposed SAPF is based on three-phase bridge (TPB) converters connected to cascaded single-phase transformers. The transformers arrangement permits the compensator to use a single dc-link unit which simplifies the control strategy and number of sensors. The multilevel waveforms are generated by using a suitable PWM strategy associated with the transformers turns ratio. Modularity and simple maintenance make the proposed SAPF an attractive solution compared to some conventional configurations. The model, PWM technique and control strategy, are presented as well as studies considering harmonic distortion and semiconductor losses estimation. Simulation and experimental results are presented in order to validate theoretical approaches. © 2016 IEEE.

关键词： Harmonic distortion

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