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

作者： Gregory A. de Almeida Carlos Cursino B. Jacobina João Paulo R. A. Méllo Euzeli C. dos Santos Post-Graduate Program in Electrical Engineering - PPgEE - Copele Campina Grande PB Brazil Department of Electrical and Computer Engineering Indiana University - Purdue University (IUPUI) Indianapolis IN USA

ISBN: (纸本)9781467395519

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.

关键词： Pulse width modulation Estimation Capacitors Harmonic analysis Switches Power system harmonics Reactive power

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Implementation Method CUSUM To Determine The Accident Prone Areas in Web Based

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Journal of Physics: Conference Series 2018年第1期1114卷

作者： Rozzi Kesuma Dinata Dahlan Abdullah H Hartono Cut Ita Erliana Berliana Kusuma Riasti Akbar Iskandar Ifit Novita Sari Nurmawati Ricardo Freedom Nanuru Lusi Dwi Putri Rosida Tiurma Manurung S. Sriadhi A A Saleh T Astari Muammar Khaddafi Department of Informatics Universitas Malikussaleh Aceh Indonesia Department of Computer Science STMIK IBBI Medan Indonesia Department of Industrial Engineering Universitas Malikussaleh Aceh Indonesia Department of Informatics Universitas Sebelas Maret Surakarta. Indonesia Department of Informatics STMIK AKBA Makassar Indonesia Departement of: Social Science Education Program Post Graduate Program Universitas Kanjuruhan Malang Malang Indonesia Faculty of industry Technique University of 45 Surabaya Indonesia Universitas Kristen Indonesia Maluku Ambon Indonesia Department of Civil Engineering Universitas Lancang Kuning Pekanbaru Indonesia Graduate Program in Scientific Psychology Universitas Kristen Maranatha Indonesia Department of Electrical Engineering Universitas Negeri Medan Indonesia Statistics Financial & Social Sciences Research Group Indonesia Department of Elementary School Teacher Education STKIP Citra Bangsa Aceh Utara Aceh Indonesia Department of Accounting Universitas Malikussaleh Aceh Indonesia

At the Unit Laka Lantas Polres Lhokseumawe determining accident-prone areas on roads in Lhokseumawe still using manual systems. Determination of accident-prone areas are less effective because the police Unit Laka Lantas Polres Lhokseumawe just using the data of the last year and had to repeatedly calculate manually accident-prone areas based on the number of human casualties. In this study the system implementation CUSUM method (Cummulative Summary) to determine the accident-prone areas designed using the web-based programming language PHP. In this system there are three processes to determine areas prone to accidents, the accident rate calculations based on the weighted severity, blacksite calculations using the Z-Score method for determining areas prone to accident blackspots and calculations using the CUSUM method to determine the critical points of an accident. The data used are secondary data obtained from the Police Unit Laka Lantas Polres Lhokseumawe years 2009-2013.

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Retraction: Implementation Method CUSUM To Determine The Accident Prone Areas in Web Based (J. Phys.: Conf. Ser. 1114 012093)

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Journal of Physics: Conference Series 2018年第1期1114卷

This paper was retracted by IOP Publishing on 12 December 2018. This paper was published due to a technical error and was not intended to be included in this journal. Retraction published: 8 February 2019

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

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

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IEEE Conference on Electromagnetic Field Computation

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

ISBN: (纸本)9781509010332

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.

关键词： Magnetic hysteresis Integrated circuit modeling Stochastic processes Soft magnetic materials Magnetic fields Standards Data models

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

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

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Annual Conference of Industrial Electronics Society

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

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... 详细信息

关键词： Heat recovery Heat pumps Resistance heating State-space methods Water heating Heat transfer

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Transmission of real-time video signal with interference density and human traffic

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Telkomnika (Telecommunication Computing Electronics and Control) 2015年第4期13卷 1352-1360页

作者： Bahaweres, Rizal Broer Karya, Oki Teguh Alaydrus, Mudrik Post-Graduate Program of Electrical Engineering Departement Mercu Buana University Indonesia KompasTV Indonesia Faculty of Science and Technology State Islamic University Syarif Hidayatullah Jakarta Indonesia

The use of mobile phone as a communication tool rapidly increases, as well as various types of functions therein. Among of the many applications on the mobile phone, which are used skype androidbased for teleconferencing via mobile phone. Things can not be separated from these applications is the need of qualified internet network access for these applications can be felt up function. One of the network access to the Internet is widely used today's society is a wi-fi network. Access to the Internet does not always provide the best performance, this is due to many factors, one of which is the presence of interference. In this study, we tested transmission of video signals in real-time using an application skype on the mobile phone. Skype run on wi-fi network, which is influenced by the presence of interference or objects such as human traffic in the network. Wireshark were used to obtain data reliability wi-fi network, known as QoS. While evalvid used to obtain the data QoE restricted only get the data PSNR (Peak Signal To Noise Ratio) and MSE (Mean Square Error). © 2015 Universitas Ahmad Dahlan.

关键词： Wi-Fi

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Three-phase four-wire inverters based on cascaded three-phase converters with four and three legs

Three-phase four-wire inverters based on cascaded three-phas...

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IEEE Energy Conversion Congress and Exposition

作者： Joao P. R. A. Mello Cursino B. Jacobina Mauricio B. R. Correa Post-Graduate Program in Electrical Engineering (PPgEE/COPELE) Federal University of Campina Grande (UFCG) Campina Grande - 58429-900 - Paraiba - Brazil Department of Electrical Engineering (DEE) Federal University of Campina Grande (UFCG) Campina Grande - 58429-900 - Paraiba - Brazil

ISBN: (纸本)9781509007387

This paper presents three-phase converter topologies for four-wire systems. The converters are series connected by three-phase transformers with accessible neutral. They possess a common dc-link, which is the power supply of the system, and two or more converters, where one of them is connected directly to the ac system, and the others cascaded through three-phase transformers. The three-phase transformers have turn ratios that are calculated in order to maximize the number of levels produced by the inverters. The Level-Shifted Pulse Width Modulation technique is developed for two and three cascaded converters, and a control system is used to set the electrical grid currents on desired values. Simulation and experimental results are exposed for configurations with two cascaded converters, each one with either three or four legs.

关键词： three phase transformers Converters AC SYSTEMS cascades phase convertors Phase transformers Electric Power Source Inventors control systems three-phase four-wire Leg grid current

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Four H-bridge based shunt active power filter for three-phase four wire system

Four H-bridge based shunt active power filter for three-phas...

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

作者： Edgard L. L. Fabricio Cursino B. Jacobina Gregory A. A. Carlos Maurício B. R. Correa Academic Unity of Control and Industrial Processes Federal Institute of Parafba (IFPB) João Pessoa PB Brazil Electrical Engineering Department (DEE) Federal University of Campina Grande (UFCG) Campina Grande PB Brazil Post-Graduate Program in Electrical Engineering COPELE

ISBN: (纸本)9781467395519

This paper proposes a shunt active power filter (SAPF) composed of four H-bridge converters. Each of them is connected by means of isolation transformers. Compared to conventional topologies, the proposed converter permits reducing: dc-link voltage rating, grid current harmonic distortion and/or switching frequency (switching losses). A suitable control strategy to adjust the filter currents as well as dc-link voltage are presented. Two PWM strategies are designed to command the converter according to the reference voltage provided by the controllers. Simulation and experimental results are presented in order to validate theoretical approaches.

关键词： Topology Pulse width modulation Voltage control Harmonic analysis Wires Shunts (electrical) Harmonic distortion

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

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

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International Conference on Harmonics and Quality of Power

作者： #x00C9 rica Mangueira Lima Núbia Silva Dantas Brito Benemar Alencar de Souza Wellinsílvio Costa dos Santos Laís Martins de Andrade Fortunato Post-Graduate Program in Electrical Engineering - PPgEE Federal University of Campina Grande - UFCG Campina Grande Brazil Electrical Engineering Department (DEE) Federal University of Campina Grande - UFCG Campina Grande Brazil Undergraduate student in Electrical Engineering Department (DEE) Federal University of Campina Grande - UFCG Campina Grande Brazil

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.

关键词： Harmonic analysis Time-frequency analysis Signal resolution Fourier transforms Impedance Conductors

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Modeling and control of a XY positioning table

Modeling and control of a XY positioning table

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IEEE/IAS International Conference on Industry Applications

作者： Lucas J. da S. Moreira Christian C. Dias Rafael B. C. Lima Péricles R. Barros George Acioli Júnior Post-Graduate Program in Electrical Engineering - PPgEE - COPELE Graduate Program in Electrical Engineering - PGEE Electrical Engineering Department - DEE Federal University of Campina Grande - UFCG 58429-900 Campina Grande - PB - Brazil

ISBN: (纸本)9781509051281

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.

关键词： IMC XY PID

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