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Single-Phase Transformerless UPS with Interleaved Boost Converters for Battery Discharging

Single-Phase Transformerless UPS with Interleaved Boost Conv...

引用

2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023

作者： Pinto, Alan R. A. Bahia, Filipe A. C. Souza, Reuben P. R. Pinheiro, José R. Costa, Fabiano F. Federal University of Bahia Post-Graduate Program in Electrical Engineering - Ppgee Salvador Brazil Federal University of Bahia Dept. of Electrical and Computer Engineering - Deec Salvador Brazil Federal University of Campina Grande Dept. of Electrical Engineering - Dee Campina Grande Brazil

ISBN: (纸本)9798350316445

This paper proposes a reconfiguration for a single-phase, double conversion uninterruptible power supply (UPS). With the addition of two static switches to the original circuit, the UPS mitigates the ripple in the current, through battery discharge performed by two legs. Other than these switches, the circuit topology is preserved. The preliminary results show a satisfactory level of ripples for the inductor current and suitable power quality for the output voltage. © 2023 IEEE.

关键词： battery mode discharger interleaved boost normal mode

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Identifying irregularity electricity usage of customer behaviors using logistic regression and linear discriminant analysis 3

Identifying irregularity electricity usage of customer behav...

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3rd International Conference on science in Information Technology, ICSITech 2017

作者： Lawi, Armin Wungo, Supriyadi La Manjang, Salama Department of Computer Science Post-graduate Program of Electrical Engineering Dept. Electrical Engineering Universitas Hasanuddin Makassar Indonesia

ISBN: (纸本)9781509058662

This study aims to implement a machine learning technique in identifying the irregularities of customer behavior on the use of prepaid electricity pulses. The methods used are Linear Discriminant Analysis and Logistic Regression. The performance of the classification system will be evaluated using the 10-fold cross-validation technique. Validation results are measured using accuracy, precision and recall values. In this research shows that the use of machine learning technique has a good performance in classification of electrical consumption behavior. Experimental results with the different amount of data testing indicate that Logistic Regression method has high accuracy, precision, and recall value when compared with Linear Discriminant Analysis that is 100%. This is due to Logistic Regression method can predict irregularities accurately because the addition of the amount of data does not affect the performance of the method. © 2017 IEEE.

关键词： Regression analysis

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A SPECTRUM SENSING ALGORITHM BASED ON STATISTIC TESTS FOR COGNITIVE NETWORKS SUBJECT TO FADING

A SPECTRUM SENSING ALGORITHM BASED ON STATISTIC TESTS FOR CO...

引用

European Signal Processing Conference

作者： Fabricio B. S. de Carvalho Jeronimo S. Rocha Waslon T. A. Lopes Marcelo S. Alencar Post-Graduate Program in Electrical Engineering - PPgEE - COPELE DEE - UFCG Iecom - UFCG

ISBN: (纸本)9781479946037

Cognitive radio is a viable technology for the next generation of wireless communications. The ability to sense the electromagnetic spectrum and to enable vacant bands to other users has been investigated in the past years. One important issue is the use of an efficient spectrum sensing algorithm to monitor the frequency band occupancy. Usually, the effects of fading are overseen in the analysis of those algorithms. This paper aims to evaluate the performance of a spectrum sensing algorithm based on Jarque-Bera test. Rayleigh fading is considered in this paper. Preliminary simulation results are provided, to demonstrate the potential of the proposed strategy.

关键词： Cognitive Radio Signal Processing Spectrum Sensing Statistic Tests Jarque-Bera Test Rayleigh Fading Channel

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Three-Phase shunt active power filter based on the interconnection of single-Phase and three-Phase converters

Three-Phase shunt active power filter based on the interconn...

引用

2013 12th Brazilian Power Electronics Conference, COBEP 2013

作者： Maciel, A.M. Jacobina, C.B. Melo, V.B. Dos Santos, E.C. Fabricio, E.L.L. Post-Graduate Program in Electrical Engineering -PPgEE -COPELE Brazil 58429-900 Campina Grande -PB Brazil -PB Brazil Department of Electrical and Computer Engineering Purdue School of Engineering and Technology IUPUI United States

ISBN: (纸本)9781479902729

This paper presents a topology based on the interconnection of single-phase H-bridge converters and a three-phase converter acting as a shunt active power filter. Contributions for the model, PWM approach and control strategies are presented to the studied converter. As compared to the conventional solution by using just H-bridges converters, the proposed one reduces the number of semiconductor and storage devices while keeping the same characteristics of high number of levels. A comprehensive THD analysis will be considered followed by simulated and experimental outcomes. © 2013 IEEE.

关键词： Bandpass filters

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Closed-loop Frequency Data-driven PID Retuning 2

Closed-loop Frequency Data-driven PID Retuning

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2nd IEEE Conference on Control Technology and Applications, CCTA 2018

作者： Da Silva Moreira, Lucas José Acioli, George Barros, Péricles Rezende Post-Graduate Program in Electrical Engineering PPgEE COPELE 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)9781538676981

This paper is about a data-driven frequency domain PID retuning from the initial controller parameters. It uses data collected from a specific closed-loop experiment to estimate frequency response points. The data-driven retuning method is applied to make a process matches with the defined reference model using a convex optimization technique that minimizes modified cost function. The proposed strategy is demonstrated in laboratory scale thermal plant based on Peltier effect, using crossover and critical frequencies estimations. © 2018 IEEE.

关键词： Frequency estimation

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SIX-PHASE MACHINE DRIVE SYSTEM BASED ON THREE THREE-LEG CONVERTERS

SIX-PHASE MACHINE DRIVE SYSTEM BASED ON THREE THREE-LEG CONV...

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Brazilian Power Electronics Conference

作者： A. C. N. Maia C. B. Jacobina Federal University of Campina Grande (UFCG) Post-Graduate Program in Electrical Engineering - PPgEE - COPELE Electrical Engineering Department (DEE)

ISBN: (纸本)9781479902712

In this paper, a six-phase machine drive system fed by a nine-leg converter is proposed. The drive system is composed of a three three-leg inverters feeding a six-phase induction motor, which is adequate to develop a high power system with voltage rating restrictions. The studied system is compared to the conventional solution and it is demonstrated that the nine-leg converter permits to reduce the harmonic distortion of the machine currents and to decrease the power processed by converter switches. The system model and the PWM strategy are presented. Experimental results demonstrate the feasibility of the proposed system.

关键词： Harmonic Distortion Motor Drive System Ratings of Switches Semiconductor Losses Six-Phase Machine Three-leg Converters

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Four-wire Shunt Compensator Based on H-bridge Y-Connected Converters

Four-wire Shunt Compensator Based on H-bridge Y-Connected Co...

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Annual Conference of the IEEE Industrial Electronics Society

作者： E. L. L. Fabricio C. B. Jacobina V. F. Nobrega Post-Graduate Program in Electrical Engineering - PPgEE - COPELE Electrical Engineering Department (DEE) Federal University of Campina Grande (UFCG)

ISBN: (纸本)9781479940318

This paper investigates a power shunt filter composed by four standard h-bridge converters, acting in four-wire system. Compared with the usual four-wire shunt filters, the proposed converter permits reducing the dc-link voltages, the harmonic distortion or the switching frequency. Suitable control strategies to adjust the filter currents as well as the three dc-link voltages are presented. The PWM strategy is designed to command the converter according to the reference voltage provided by the controllers. Simulation and experimental results are presented.

关键词： Topology Voltage control Capacitors Harmonic distortion Pulse width modulation Shunts (electrical) Inverters

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A problem-based learning case study for teaching voice over internet protocol - VoIP: Using asterisk as a tool for teaching VoIP for information technology classes

A problem-based learning case study for teaching voice over ...

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6th International Conference on computer Supported Education, CSEDU 2014

作者： Dias, M.C. Gabi, C.F. Rodrigues, E.P. Souza, V.R. Perkusich, A. Coordination of Electrical Engineering Federal Institute of Education Science and Technology of Paraíba - IFPB João Pessoa Brazil Post-Graduate Program in Electrical Engineering - PpgEE - COPELE Electrical Engineering Department Federal University of Campina Grande - UFCG Campina Grande Brazil

ISBN: (纸本)9789897580215

This paper shows the use of PBL (Problem-Based Learning) technique as a key to learning VoIP in courses like electrical engineering and computer Networks in conjunction with open source and the public domain software called Asterisk which was used to create the scenario of the experiment and the problems presented to the students. In order to make the validation, the experiment was applied to students of Bachelor in electrical engineering and in Communication Technology System, undergraduate courses at the Federal Institute of Education, science and Technology of Paraíba - IFPB, in the Telephony subject, with promising results. The Asterisk software was presented as a useful and flexible tool for constructing scenarios and problems for the teaching of VoIP technologies and the used approach resulted as effective for improving the attainment of the defined learning objectives.

关键词： Teaching

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Modeling and control of a XY positioning table 12

Modeling and control of a XY positioning table

引用

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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Single-phase AC-AC double-star chopper-cells (DSCC) converter without common DC-link capacitor

Single-phase AC-AC double-star chopper-cells (DSCC) converte...

引用

IEEE Energy Conversion Congress and Exposition, ECCE

作者： Italo Roger F. M. P. da Silva Alexandre C. Oliveira Cursino B. Jacobina Post-graduate Program in Electrical Engineering - PPgEE/COPELE Department of Electrical Engineering (DEE) Federal University of Campina Grande (UFCG) Brazil

This paper presents a single-phase AC-AC converter based on Modular Multilevel Cascade Converter (MMCC) with Double-Star Chopper-Cells (DSCC). This structure is composed by three DSCC-legs, the middle leg is shared, and also it does not present a common DC-link capacitor. It is suitable for regenerative low-power AC-AC conversion. The voltage-balancing control is presented to regulate the floating DC capacitor voltages. Furthermore, a grid current and terminal load voltage control is presented to correct the Power Factor (PF) and to ensure sinusoidal waveforms. Details about a designed 16-SM prototype are also presented. The experimental results allow validating the control strategies and the effectiveness of the proposed structure.

关键词： Voltage control Pulse width modulation Capacitors Topology Digital signal processing Inductance Inductors

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