Distribution de l'Énergie par Courants Polyphasés (Classic Reprint) PDF Download
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Book Description
Excerpt from Distribution de l'Énergie par Courants Polyphasés Au point de vue de la distribution de la lumière, le cou rant alternatif satisfaisait à toutes les conditions de la pra tique; mais il n'en était pas de même en ce qui concerne la distribution de l'énergie mécanique. Il n'existait, en effet, pas de moteur à courant alternatif démarrant sous charge. Actuellement encore, la plupart des moteurs à courant alter natif ne sont capables de développer qu'un faible couple de démarrage, et nécessitent, par conséquent, l'adjonction d'un débrayage pour leur mise en marche sous charge. Ils ont un rendement médiocre et sont d'un coût notablement supé rieur à celui des moteurs à courant polyphasé. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Book Description
Excerpt from Distribution de l'Énergie par Courants Polyphasés Au point de vue de la distribution de la lumière, le cou rant alternatif satisfaisait à toutes les conditions de la pra tique; mais il n'en était pas de même en ce qui concerne la distribution de l'énergie mécanique. Il n'existait, en effet, pas de moteur à courant alternatif démarrant sous charge. Actuellement encore, la plupart des moteurs à courant alter natif ne sont capables de développer qu'un faible couple de démarrage, et nécessitent, par conséquent, l'adjonction d'un débrayage pour leur mise en marche sous charge. Ils ont un rendement médiocre et sont d'un coût notablement supé rieur à celui des moteurs à courant polyphasé. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Martin Vetterli Publisher: Cambridge University Press ISBN: 1139916572 Category : Technology & Engineering Languages : en Pages : 745
Book Description
This comprehensive and engaging textbook introduces the basic principles and techniques of signal processing, from the fundamental ideas of signals and systems theory to real-world applications. Students are introduced to the powerful foundations of modern signal processing, including the basic geometry of Hilbert space, the mathematics of Fourier transforms, and essentials of sampling, interpolation, approximation and compression The authors discuss real-world issues and hurdles to using these tools, and ways of adapting them to overcome problems of finiteness and localization, the limitations of uncertainty, and computational costs. It includes over 160 homework problems and over 220 worked examples, specifically designed to test and expand students' understanding of the fundamentals of signal processing, and is accompanied by extensive online materials designed to aid learning, including Mathematica® resources and interactive demonstrations.
Author: David Edward Goldberg Publisher: Addison-Wesley Professional ISBN: Category : Computers Languages : en Pages : 436
Book Description
A gentle introduction to genetic algorithms. Genetic algorithms revisited: mathematical foundations. Computer implementation of a genetic algorithm. Some applications of genetic algorithms. Advanced operators and techniques in genetic search. Introduction to genetics-based machine learning. Applications of genetics-based machine learning. A look back, a glance ahead. A review of combinatorics and elementary probability. Pascal with random number generation for fortran, basic, and cobol programmers. A simple genetic algorithm (SGA) in pascal. A simple classifier system(SCS) in pascal. Partition coefficient transforms for problem-coding analysis.
Author: Barry W. Kennedy Publisher: McGraw Hill Professional ISBN: 9780071344166 Category : Technology Languages : en Pages : 392
Book Description
Make power deregulation work for you With deregulation, the vast pool of power customers is up for grabs. As a utility, are you ready to compete? As a customer, are you ready to choose? In Power Quality Primer, Barry Kennedy gives you specifically designed, ahead-of-the-curve methods. Utilities will learn how to: Plan successful competitive strategies for every aspect of the business Market proactive solutions to customers before needs arise Improve transmission and distribution system quality, efficiency, and power factor performance Eliminate technical problems such as over-voltages and poor grounding Design and deliver effective simulations Build customer-winning, customer-keeping quality, quality control, and service into all facets of your enterprise As a customer, you’ll learn how to pick the utility that meets your power quality needs…solve your own power quality problems and find cost-effective solutions…and perform your own power quality survey
Author: Slawomir Wiak Publisher: Springer Science & Business Media ISBN: 1402045352 Category : Technology & Engineering Languages : en Pages : 459
Book Description
This book presents papers covering a wide spectrum of theory and practice, deeply rooted in engineering problems at a high practical and theoretical level. The contents explore theory, control systems and applications, the heart of the matter in electrical drives.
Author: H. Wayne Beaty Publisher: McGraw Hill Professional ISBN: 0071378448 Category : Technology & Engineering Languages : en Pages : 539
Book Description
A bestselling calculations handbook that offers electric power engineers and technicians essential, step-by-step procedures for solving a wide array of electric power problems. This edition introduces a complete electronic book on CD-ROM with over 100 live calculations--90% of the book's calculations. Updated to reflect the new National Electric Code advances in transformer and motors; and the new system design and operating procedures in the electric utility industry prompted by deregulation.
Author: Stefan Bilbao Publisher: John Wiley & Sons ISBN: 0470870184 Category : Science Languages : en Pages : 380
Book Description
Scattering-based numerical methods are increasingly applied to the numerical simulation of distributed time-dependent physical systems. These methods, which possess excellent stability and stability verification properties, have appeared in various guises as the transmission line matrix (TLM) method, multidimensional wave digital (MDWD) filtering and digital waveguide (DWN) methods. This text provides a unified framework for all of these techniques and addresses the question of how they are related to more standard numerical simulation techniques. Covering circuit/scattering models in electromagnetics, transmission line modelling, elastic dynamics, as well as time-varying and nonlinear systems, this book highlights the general applicability of this technique across a variety of disciplines, as well as the inter-relationships between simulation techniques and digital filter design. provides a comprehensive overview of scattering-based numerical integration methods. reviews the basics of classical electrical network theory, wave digital filters, and digital waveguide networks. discusses applications for time-varying and nonlinear systems. includes an extensive bibliography containing over 250 references. Mixing theory and application with numerical simulation results, this book will be suitable for both experts and readers with a limited background in signal processing and numerical techniques.
Author: Christoph Meinel Publisher: Springer Science & Business Media ISBN: 3642543316 Category : Computers Languages : en Pages : 406
Book Description
The authors give a detailed summary about the fundamentals and the historical background of digital communication. This includes an overview of the encoding principles and algorithms of textual information, audio information, as well as images, graphics, and video in the Internet. Furthermore the fundamentals of computer networking, digital security and cryptography are covered. Thus, the book provides a well-founded access to communication technology of computer networks, the internet and the WWW. Numerous pictures and images, a subject-index and a detailed list of historical personalities including a glossary for each chapter increase the practical benefit of this book that is well suited as well as for undergraduate students as for working practitioners.
Author: Michel Bilodeau Publisher: Springer Science & Business Media ISBN: 0387291156 Category : Mathematics Languages : en Pages : 402
Book Description
Space, structure, and randomness: these are the three key concepts underlying Georges Matheron’s scientific work. He first encountered them at the beginning of his career when working as a mining engineer, and then they resurfaced in fields ranging from meteorology to microscopy. What could these radically different types of applications possibly have in common? First, in each one only a single realisation of the phenomenon is available for study, but its features repeat themselves in space; second, the sampling pattern is rarely regular, and finally there are problems of change of scale. This volume is divided in three sections on random sets, geostatistics and mathematical morphology. They reflect his professional interests and his search for underlying unity. Some readers may be surprised to find theoretical chapters mixed with applied ones. We have done this deliberately. GM always considered that the distinction between the theory and practice was purely academic. When GM tackled practical problems, he used his skill as a physicist to extract the salient features and to select variables which could be measured meaningfully and whose values could be estimated from the available data. Then he used his outstanding ability as a mathematician to solve the problems neatly and efficiently. It was his capacity to combine a physicist’s intuition with a mathematician’s analytical skills that allowed him to produce new and innovative solutions to difficult problems. The book should appeal to graduate students and researchers working in mathematics, probability, statistics, physics, spatial data analysis, and image analysis. In addition it will be of interest to those who enjoy discovering links between scientific disciplines that seem unrelated at first glance. In writing the book the contributors have tried to put GM’s ideas into perspective. During his working life, GM was a genuinely creative scientist. He developed innovative concepts whose usefulness goes far beyond the confines of the discipline for which they were originally designed. This is why his work remains as pertinent today as it was when it was first written.
Author: Julien Rodet
Author: Julien Rodet
Author: Martin Vetterli
Author: David Edward Goldberg
Author: Barry W. Kennedy
Author: Slawomir Wiak
Author: M.S. Moonen
Author: H. Wayne Beaty
Author: Stefan Bilbao
Author: Christoph Meinel
Author: Michel Bilodeau