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International Conference on Computation in Science and engineering, ICCSE 2017

作者： Fitriah, Trisna Amelia Manjang, Salama Kitta, Ikhlas Electrical Engineering Department Jl. Perintis Kemerdekaan KM. 10 Makassar Sulawesi Selatan90245 Indonesia Post Graduate Program of Hasanuddin University Jl. Perintis Kemerdekaan KM. 10 Makassar Sulawesi Selatan90245 Indonesia

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. © Published under licence by IOP Publishing Ltd.

关键词： Epoxy resins

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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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Application of a Robust Relay Feedback Structure for TITO Processes

Application of a Robust Relay Feedback Structure for TITO Pr...

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IEEE Conference on Control Technology and Applications

作者： Moisés T. da Silva Péricles R. Barros Post-Graduate Program in Electrical Engineering Federal University of Campina Grande Campina Grande PB Brazil Electrical Engineering Department Federal University of Campina Grande Campina Grande PB Brazil

In this paper, a relay feedback structure which is robust to disturbances is applied to estimate multiple frequency points of processes with two-inputs two-outputs (TITO). The relay structure is composed of a block to remove static disturbance or drift followed by a relay. This block consists of a simple high-pass filter followed by a relay plus an integrator. Since the relay structure used is able to reject disturbance, during the relay feedback test, a step change and a periodic square wave with frequency lower than the ultimate frequency are applied at the process input. Thus, these frequencies information are used to estimate a FOPTD model in a wider frequency region. The proposed approach is illustrated using the Woody-Berry distillation column model. Simulation examples illustrate that the robust relay structure ensures a symmetric oscillation of the TITO process output, even under disturbances.

关键词： Application Robust Relay Feedback Structure TITO Processes

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Alternative breed of three-phase four-wire shunt compensators based on cascaded transformer with single dc-link 32

Alternative breed of three-phase four-wire shunt compensator...

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32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017

作者： De Almeida Carlos, Gregory A. Jacobina, Cursino B. Dos Santos, Euzeli C. Palmeira dos ÍndiosAL 57601-220 Brazil Post-Graduate Program in Electrical Engineering-PPgEE-Copele Campina GrandePB 58429-900 Brazil Campina GrandePB 58429-900 Brazil IndianapolisIN46202 United States

ISBN: (纸本)9781509053667

This paper introduces a new breed of four-wire (4W) multilevel shunt compensator to deal with either harmonic or reactive power compensation. The converter configurations are generalized for K-stages and the main benefits of proposed topologies lie on i) multilevel waveforms generation, ii) single dc-link unit and iii) modular characteristic. The configurations are based on cascaded transformers along with three-phase-bridge (TPB) converters. These converters are directly connected to the transformer primary side. A suitable PWM strategy combined with an appropriate transformer turns ratio guarantees the desirable multilevel output waveforms. The modularity feature provides simple maintenance and makes the proposed shunt active power filters (SAPFs) an attractive solution in comparison with conventional configurations. The configuration model and overall control are addressed, as well. Simulation and experimental results are presented for theoretical validation. © 2017 IEEE.

关键词： Power converters

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Development of concept essential in kinematic topics

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Journal of Physics: Conference Series 2020年第2期1521卷

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

Essential concepts were important aspects in physics education, especially in the study of learning development, student evaluation, and curriculum planning. Several types of concept analysis models are commonly applied in the context of physics, i.e. sematic network techniques, concept formation (concept analysis), concept maps, and representing substantive structure. The stages of essential concept development were concept analysis, concept map and essential concept. The research method used development research. The stages of development research included (1) the preliminary study phase, (2) the development study phase, (3) the evaluation phase. The main results of this study were essential concepts on the topic of Kinematics.

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The modeling of 80 mm diameter cross flow turbine runner for mini/microhydro environmentally friendly power plant

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Journal of Physics: Conference Series 2019年第1期1217卷 012013-012013页

作者： Purwanto Budiyono Hermawan Environmental Doctorate of Diponegoro University Post Graduate Program Semarang Indonesia Vocational School of Diponegoro University Semarang Indonesia Electrical Engineering Department Faculty of Engineering Diponegoro University Semarang Indonesia

Indonesian river’s potentials on Mini or Microhydro fuelled power plants has not been maximally explored despite its big potentials of utilization. The 500 MW energy potentials of Mini or Microhydro throughout Indonesia have only reached the point of 4.5% while National Energy Management Blueprint in 2050 targeted 31% of renewable energy (RE) is coming from Micro hydro energy. The applications of 80 mm diameter cross flow turbine in a household scale have drawn an increase in its experience with 450 Watts of power produced through small discharge of 20 liters/second and 3-meter head. Cross flow turbines testing in 130 mm length and 80 mm diameter conducted using Mini / micro hydropower Plant in environmentally friendly power House drum. Lower investment and operational design cost also to be made on its aim to reach community group or individual segments.

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Fault tolerance performance of two hybrid six-phase drive systems under single-phase open-circuit fault operation 32

Fault tolerance performance of two hybrid six-phase drive sy...

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32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017

作者： Melo, Victor F. M. B. Jacobina, Cursino B. Rocha, Nady Filho, Edgar R. B. Post-Graduate Program in Electrical Engineering PPgEE - COPELE - UFCG Campina Grande Paraíba Brazil Federal Institute of Pernambuco IFPE Afogados da Ingazeira Brazil Electrical Engineering Department Federal University of Campina Grande - UFCG Campina Grande Paraíba Brazil Federal University of Paraíba - UFPB - João Pessoa Paraíba Brazil

ISBN: (纸本)9781509053667

This paper discusses the fault tolerance performance of two hybrid six-phase drive systems under single-phase open-circuit fault. The topologies are considered to be hybrid because each of the two three-phase groups of the six-phase machine is connected to a different type of converter. One group is connected to a two-level converter and the other group is connected to a dual converter in an open-end arrangement. A compensation strategy is discussed in order to keep the rated operation even after the occurrence of the fault. The six-phase machine mathematical model after the fault is presented and utilized to elaborate the compensation strategy. Simulation and experimental results show the validity of the discussed solutions. © 2017 IEEE.

关键词： Timing circuits

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Fuzzy Preference Relations: Methods and Power engineering Applications

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OPSEARCH 2017年第1期39卷 34-45页

作者： Petr Ya. Ekel Luiz D. B. Terra Post Graduate Program in Electrical Engineering Pontifical Catholic University of Minas Gerais Belo Horizonte Brazil

Two classes of problems are considered within the framework of a general approach to solve optimisation problems with fuzzy coefficients, referred to as and models in the literature. This paper is concerned with the latter and proposes an approach which replaces the initial problem by a set of associated mutually interrelated models. To reduce the decision uncertainty region, the problem is converted to a multicriteria decision problem in a fuzzy environment using two methods. The first method reduces the region sequentially through a step-by-step comparison of alternatives. The second method analyses membership functions of a subset of non-dominated alternatives, considering all criteria simultaneously. The results have general applicability and are being used in power engineering planning in Brazil.

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Influence of end-effect on direct and quadrature inductances in linear electromagnetic actuators

Influence of end-effect on direct and quadrature inductances...

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2017 IEEE International Magnetics Conference, INTERMAG 2017

作者： Boff, B.B. Zanatta, A.P. Flores Filho, A.F. Dorrell, D.G. Eckert, P.R. Post-Graduate Program in Electrical Engineering Federal University of Rio Grande Do sul Porto Alegre Brazil University of KwaZulu-Natal Howard College Campus Durban South Africa

Direct and quadrature inductances, Ld and Lq, respectively, are an essential property of motors and actuators that must be known in order to develop precise control systems for high performance applications. © 20... 详细信息

ISBN: (纸本)9781538610862

关键词： Inductance

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Retracted: Implementation Method CUSUM to Determine the Accident Prone Areas in Web Based

Retracted: Implementation Method CUSUM to Determine the Acci...

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2018 Workshop on Multidisciplinary and Its Applications: Applied Mathematics, Computer Science, Information Systems, and Information Technology, WMA-Mathcomtech 2018

作者： Dinata, Rozzi Kesuma Abdullah, Dahlan Hartono, H. Erliana, Cut Ita Riasti, Berliana Kusuma Iskandar, Akbar Sari, Ifit Novita Nurmawati, N. Nanuru, Ricardo Freedom Putri, Lusi Dwi Manurung, Rosida Tiurma Sriadhi, S. Saleh, A.A. Astari, T. Khaddafi, Muammar 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 and Social Sciences Research Group Indonesia Department of Elementary School Teacher Education STKIP Citra Bangsa Aceh Utara 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. © Published under licence by IOP Publishing Ltd.

关键词： Accidents

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