201,956 research outputs found
Repetitive current control of two-level and interleaved three-phase PWM utility connected converters
No full textThis thesis is mainly concerned with investigations into digital repetitive current controlof two-level and interleaved utility connected PWM converters. The research ismotivated by the relatively poor performance of classical (PI) controllers when theutility voltage harmonic distortion is high. This is due to the low gain, and poordisturbance rejection of the PI controller at the utility harmonic frequencies. Repetitivefeedback controllers have the ability to track or reject periodic disturbances, such asutility harmonics, as they naturally have high gains at the utility voltage harmonicfrequencies, assuming that these frequencies do not change.Repetitive controllers (RC) are known for being sensitive to variations in systemparameters and disturbance frequency, which in practice renders them either ineffectiveor unstable. Another challenge arises from the memory requirements of RC in case ofthe absence of even harmonics, which can make its practical implementation difficultand expensive. In addition, another problem that has not been investigated extensivelyin the literature is that the effectiveness of RC is severely limited by the limitedbandwidth of the plant (the utility connected converter and its filter). Theoreticalanalysis and simulation results presented in this thesis show that RC could noteffectively reject disturbances at frequencies above the closed loop system bandwidth.The design of the converter's output filter bandwidth and the values of its componentsneed to be selected carefully, to enable RC to be used effectively.The research in this thesis focuses on investigating the practical implementation andperformance limits of two types of repetitive controllers (conventional and oddharmonics),used for current control of two-level utility connected converter with LCLoutput filter. The odd-harmonic repetitive controller halves the memory requirementand offers higher gains only at odd harmonic frequencies of interest. The overall controlscheme consists of the traditional classical tracking controller with a dual loop feedbacksystem and RC. The results indicate that the repetitive controller improves the steadystate error and the total harmonic distortion of the output current, provided that theplant's bandwidth is sufficiently large.Finally, a repetitive controller for an interleaved utility connected converter has beendesigned and investigated in this study. The interleaved converter system has higherbandwidth than the two-level converter, which improves the effectiveness of RC. Itprovides good disturbance rejection compared to classical controllers which results inlow output current THD. The RC was demonstrated to be robust despite uncertainty inutility impedance, while achieving a fast almost zero error convergence. The proposedRC has been experimentally implemented using a DSP and the results indicate that thequality of output current complies with international standards on harmonic limits andmatches simulation results obtained from the Matlab/Simulink model of the system
Active control of vibrations of a tall structure excited by external forces
No full textThis paper is concerned with active control of vibrations of tall structures subjected to strong wind or earth quake shocks using an active mass damper (AMD). A linear black box model of the systems is obtained from an experimental scale model of the structure. Two alternative control systems, and associated observers are designed and their performance assessed theoretically and experimentally
SK Dekan Penguji Ujian Proposal an M. Fikri Jamil Periode November 2018
Full text linkSK Dekan Penguji Ujian Proposal an M. Fikri Jamil Periode November 201
Handbook of research on expanding business opportunities with information systems and analytics/ George Leal Jamil, Editor.
No full textIncludes bibliographical references and index."This book explores expanding business opportunities with information systems and analytics. It also examines how the demand for the integration of all resources, managerial principles, processes and people development fit in the theoretical base of information systems"--Market intelligence as an information system element : delivering knowledge for decisions in a continuous process / George Leal Jamil. Informações em Rede Consultoria e Treinamento Ltda. Brazil; Leandro Henrique Rocha dos Santos, In3 Informação, Inteligência e Inovação Ltda., Brazil; Cecília Carvalho Jamil, Institute Français de la Mode, France, Brasil -- Green supply chain management and information system in global supply chain / Kijpokin Kasemsap, Suan Sunandha Rajabhat University, Thailand -- Information system for knowledge management of the technological platforms in brazil healthcare / Jorge Lima Magalhães, Marlene de Menezes, Fundação Oswaldo Cruz, Brazil; Zulmira Hartz, Deputy Director of the Institute of Hygiene and Tropical Medicine, IHMT in University of Nova Lisboa, Portugal; Adelaide Antunes, National Institute of Industrial Propert, Brazil -- Improving project management decisions with big data analytics / George Leal Jamil, Informações em Rede Consultoria e Treinamento Ltda., Brazil; Luiz Fernando Magalhães Carvalho, Data Scientist, Banco Itaú, Brazil -- On the use of digital platforms to support sme internationalization in the context of industrial business associations / Eric Costa, António Lucas Soares and Jorge Pinho de Sousa, University of Porto, Portugal & INESC TEC, Portugal -- Information marketing / José Poças Rascão, Polytechnic Institute of Setúbal, Portugal -- Patent information quality to stimulate innovations / Sérgio Maravilhas, Portugal, Brazil; Sérgio Goes Oliveira; Paulo Melo, UNIFACS, Universidade Salvador, Laureate International Universities, Brazil -- Chapter enhancing brand management and organizational innovation in modern business / Kijpokin Kasemsap, Suan Sunandha Rajabhat University, Thailand -- Reflecting on analytics impacts on information architecture contexts as a source of business modelling for healthcare services / Liliane Carvalho Jamil, M. D. Independent Researcher; Augusto Alves Pinho Vieira, M. D. Independent Researcher; Antônio José Daniel Xavier, Federal University of Minas Gerais, Brazil -- Methodology for identifying drivers of innovative sectorial nuclei / Brenner Lopes and Luander Falcão, Nous SenseMaking, Brazil -- Internet of things and internet of all things / Cláudio Roberto Malhães Pessoa, Cássio Luis Batista, Marco Elisio Marques, Universidade Fumec, Brazil -- The customer experiential knowledge : contribution to innovation management, toward the definition of a new organizational competence / Dhouha Jaziri , FSEG Sousse, Sousse University, Tunisia -- Information strategy : implementing and managing a digital strategy in a portuguese company / Sérgio Maravilhas, Portugal, Brazil; Sérgio Goes Oliveira; Paulo Melo, UNIFACS, Universidade Salvador, Laureate International Universities, Brazil -- Organizational intelligence : a conceptual proposal for value creation to economic organizations / Pedro Fernandes da Anunciação, Escola Superior de Ciências Empresariais do Instituto Politécnico de Setúbal, Portugal; Antonio Juan Briones Peñalver, Universidad Politécnica de Cartagena, Spain -- The contribution of the information science through knowledge scientific and technological in intellectual property / Jorge Lima de Magalhães, Flavia Maria Lins Mendes, Fundação Oswaldo Cruz, Brazil; Adelaide Maria de Souza Antunes, National Institute of Industrial Property, INPI, Brazil; Zulmira Hartz -- Director in research and knowledge management for the instituto de higiene e medicina tropical, ihmt, lisbon, portugal -- Organizational urbanism. a new proposal for information systems management / Pedro Fernandes da Anunciação, Francisco Madeira Esteves, Fernando Miguel Gonçalves, Escola Superior de Ciências Empresariais do Instituto Politécnico de Setúbal, Portugal -- How fablabs manage the knowledge they create / Sérgio Maravilhas and Joberto Martins, UNIFACS, Universidade Salvador, Laureate International Universities, Portugal, Brazil -- Reviewing information quality : the challenge of the "analytics" trend / George Leal Jamil -- Informações em Rede Consultoria e Treinamento Ltda., Brazil -- Optimal locational analysis for the targeting of investments in specific businesses and territories in brazil : an analysis of the state of minas gerais / Brenner Lopes and Luander Falcão, Nous SenseMaking, Brazil -- Indian telecom industry : challenges and use of analytics to manage customer churn / Vishal Mahajan, Renuka Mahajan and Richa Misra, Jaipuria Institute of Management, Noida, India -- U.inovacelerator : a model of innovation indicators / Fábio Gonçalves, FEUP-FLUP Master in Information Science; Maria Manuela Pinto Alexandra Xavie, FEUP-FLUP / CITE-INESC TEC, Porto, Portugal.1 online resource
The Tunisian state in the eighteenth century.
No full textAbun-Nasr Jamil M. The Tunisian state in the eighteenth century.. In: Revue de l'Occident musulman et de la Méditerranée, n°33, 1982. pp. 33-66
Abun-Nasr (Jamil M.) : A History of the Maghrib in the Islamic period
No full textAgeron Charles-Robert. Abun-Nasr (Jamil M.) : A History of the Maghrib in the Islamic period. In: Revue française d'histoire d'outre-mer, tome 77, n°286, 1er trimestre 1990. pp. 119-120
Alberta pipelines to agrivoltaic data
No full textThis project supports the publication: From fossil fuel infrastructure to sustainable land use: agrivoltaics on oil and gas pipelines by Uzair Jamil, Hana Darvishi, and Joshua M. Pearc
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