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Books > Professional & Technical > Energy technology & engineering > Electrical engineering

Introduction to Electric Circuits (Paperback, Revised ed.): Ray Powell Introduction to Electric Circuits (Paperback, Revised ed.)
Ray Powell
R1,346 Discovery Miles 13 460 Ships in 10 - 15 working days

An Introduction to Electric Circuits is essential reading for first year students of electronics and electrical engineering who need to get to grips quickly with the basic theory. This text is a comprehensive introduction to the topic and, assuming virtually no knowledge, it keeps the mathematical content to a minimum.
As with other textbooks in the series, the format of this book enables the student to work at their own pace. It includes numerous worked examples throughout the text and graded exercises, with answers, at the end of each section.

Emerging Transactive Energy Technology for Future Modern Energy Networks (Paperback): Mohammadreza Daneshvar, Behnam... Emerging Transactive Energy Technology for Future Modern Energy Networks (Paperback)
Mohammadreza Daneshvar, Behnam Mohammadi-Ivatloo, Kazem Zare
R3,237 Discovery Miles 32 370 Ships in 10 - 15 working days

Emerging Transactive Energy Technology for the Future Modern Energy Networks looks at the importance of transactive energy technology in modern multi-carrier energy networks, exploring modeling and optimization and analyzing the necessity of transactive energy technology for future modern energy networks. Along with energy technology, the book covers applications of transactive energy technology, strategies in optimal operation of the hybrid energy networks, reliable and sustainable development of the modern energy networks, and design, integration and operation of a full level of renewable energy resources. This reference is intended for energy, power, mechanical and environmental engineers, researchers and postgraduate students who work in various types of energy systems.

Ugly's Electrical References, 2023 Edition (Spiral bound, 7th edition): Charles R. Miller Ugly's Electrical References, 2023 Edition (Spiral bound, 7th edition)
Charles R. Miller
R574 R518 Discovery Miles 5 180 Save R56 (10%) Ships in 18 - 22 working days

Ugly's Electrical References, 2023 Edition is the gold standard on-the-job reference tool of choice for electrical industry professionals. Offering the most pertinent, up-to-date information used by electricians, including: updated NEC code and table change information, mathematical formulas, NEMA wiring configurations, conduit bending guide, ampacity and conduit fill information, transformer and control circuit wiring diagrams, and conversion tables. New Features of this Edition: * Updated to reflect changes to the 2023 National Electrical Code (NEC) * Expanded coverage of the following topics: -Full-load currents for 3-phase transformers; -Maximum number of conductors in electrical metallic tubing for trade sizes 5 and 6; -Equipment grounding conductors; -General lighting loads for non-dwelling occupancies.

Adaptive Hybrid Active Power Filters (Hardcover, 1st ed. 2019): Lei Wang, Man-Chung Wong, Chi-Seng Lam Adaptive Hybrid Active Power Filters (Hardcover, 1st ed. 2019)
Lei Wang, Man-Chung Wong, Chi-Seng Lam
R3,802 Discovery Miles 38 020 Ships in 18 - 22 working days

This book introduces advanced thyristor-based shunt hybrid active power filters (HAPFs) for power quality improvement in power grids, which are characterized by a low dc-link operating voltage and a wide compensation range. This means they can overcome the high dc-link voltage requirement of conventional active power filters and the narrow compensation range problem of LC-coupling hybrid active power filters. Consisting of 10 chapters, the book discusses the principle, design, control and hardware implementation of thyristor-based hybrid active power filters. It covers 1) V-I characteristics, cost analysis, power loss and reliability studies of different power filters; 2) mitigation of the harmonic injection technique for thyristor-controlled parts; 3) nonlinear pulse width modulation (PWM) control; 4) parameter design methods; 5) minimum inverter capacity design; 6) adaptive dc-link voltage control; 7) unbalanced control strategy; 8) selective compensation techniques; and 9) the hardware prototype design of thyristor-based HAPFs, verified by simulation and experimental results. It enables readers to gain an understanding of the basic power electronics techniques applied in power systems as well as the advanced techniques for controlling, implementing and designing advanced thyristor-based HAPFs.

Digital Signal Processing for Measurement Systems - Theory and Applications (Hardcover, 2006 ed.): Gabriele D'Antona,... Digital Signal Processing for Measurement Systems - Theory and Applications (Hardcover, 2006 ed.)
Gabriele D'Antona, Alessandro Ferrero
R1,561 Discovery Miles 15 610 Ships in 18 - 22 working days

This excellent Senior undergraduate/graduate textbook offers an unprecedented measurement of science perspective on DSP theory and applications, a wealth of definitions and real-life examples making it invaluable for students, while practical.

Adaptive Voltage Control in Power Systems - Modeling, Design and Applications (Hardcover, 2007 ed.): Giuseppe Fusco, Mario Russo Adaptive Voltage Control in Power Systems - Modeling, Design and Applications (Hardcover, 2007 ed.)
Giuseppe Fusco, Mario Russo
R2,745 Discovery Miles 27 450 Ships in 18 - 22 working days

Power quality is a pressing concern in electric power systems. One of the main requirements of power quality management is the guarantee of a sinusoidal voltage waveform with adequate amplitude at each node of the network. The fulfilment of such a control objective is facilitated by adaptive systems which can account for unpredictable fluctuations in operating conditions.

Adaptive Voltage Control in Power Systems, a self-contained blend of theory and novel application, is an in-depth treatment of such adaptive control schemes. The reader moves from power-system-modelling problems through illustrations of the main adaptive control systems (self-tuning, model-reference and nonlinearities compensation) to a detailed description of design methods: Kalman filtering, parameter-identification algorithms and discrete-time controller design are all represented. Case studies address applications issues in the implementation of adaptive voltage control.

Practicing engineers and researchers in power systems and control engineering will find this monograph, written by representatives of each field, to be a valuable synthesis of both while its accessible style will also appeal to graduate students.

Building-Integrated Photovoltaic Systems (BIPVS) - Performance and Modeling Under Outdoor Conditions (Hardcover, 1st ed. 2018):... Building-Integrated Photovoltaic Systems (BIPVS) - Performance and Modeling Under Outdoor Conditions (Hardcover, 1st ed. 2018)
Andres Julian Aristizabal Cardona, Carlos Arturo Paez Chica, Daniel Hernan Ospina Barragan
R2,654 Discovery Miles 26 540 Ships in 18 - 22 working days

This book discusses building-integrated photovoltaic systems (BIPV) and provides solutions for solving problems related to designing, sizing and monitoring a BIPV that has been used to replace conventional building materials in parts of the building envelope such as the roof, skylights or facades. The book begins by introducing the basics to readers interested in learning about this technology and then outlines in an accessible way, a practical development plan for the installation and monitoring of these systems in residential, industrial, and commercial buildings. Chapters discuss the needs of installing, designing, and sizing and provide a financial analysis for a successful implementation of a BIPV system. This book is a useful tool for renewable energy designers, energy contractors, architects, government institutions, and those in the academic community who are interested in seamlessly integrating solar panels into the construction phase of new building projects or retrofitted into existing buildings.

Wireless Communications for Power Substations: RF Characterization and Modeling (Hardcover, 1st ed. 2019): Basile L. Agba,... Wireless Communications for Power Substations: RF Characterization and Modeling (Hardcover, 1st ed. 2019)
Basile L. Agba, Fabien Sacuto, Minh Au, Fabrice Labeau, Francois Gagnon
R3,791 Discovery Miles 37 910 Ships in 18 - 22 working days

This book consists of the identification, characterization, and modeling of electromagnetic interferences in substations for the deployment of wireless sensor networks. The authors present in chapter 3 the measurement setup to record sequences of impulsive noise samples in the ISM band of interest. The setup can measure substation impulsive noise, in wide band, with enough samples per time window and enough precision to allow a statistical study of the noise. During the measurement campaign, the authors recorded around 120 noise sequences in different substations and for four ranges of equipment voltage, which are 25 kV, 230 kV, 315 kV and 735 kV. A characterization process is proposed, by which physical characteristics of partial discharge can be measured in terms of first- and second-order statistics. From the measurement campaign, the authors infer the characteristics of substation impulsive noise as a function of the substation equipment voltage, and can provide representative parameters for the four voltage ranges and for several existing impulsive noise models. The authors investigate in chapters 4 and 5 the modeling of electromagnetic interferences caused by partial discharge sources. First, the authors propose a complete and coherent approach model that links physical characteristics of high-voltage installations to the induced radio-interference spectra of partial discharge sources. The goodness-of-fit of the proposed physical model has been measured based on some interesting statistical metrics. This allows one to assess the effectiveness of the authors' approach in terms of first- and second-order statistics. Chapter 6 proposes a model based on statistical approach. Indeed, substation impulsive noise is composed of correlated impulses, which would require models with memory in order to replicate a similar correlation. Among different models, we have configured a Partitioned Markov Chain (PMC) with 19 states (one state for the background noise and 18 states for the impulse); this Markov-Gaussian model is able to generate impulsive noise with correlated impulse samples. The correlation is observable on the impulse duration and the power spectrum of the impulses. Our PMC model provides characteristics that are more similar to the characteristics of substation impulsive noise in comparison with other models, in terms of time and frequency response, as well as Probability Density Functions (PDF). Although PMC represents reliably substation impulsive noise, the model remains complex in terms of parameter estimation due to a large number of Markov states, which can be an obstacle for future wireless system design. In order to simplify the model, the authors decrease the number of states to 7 by assigning one state to the background noise and 6 states to the impulse and we call this model PMC-6. PMC-6 can generate realistic impulses and can be easily implemented in a receiver in order to mitigate substation impulsive noise. Representative parameters are provided in order to replicate substation impulsive noise for different voltage ranges (25-735 kV). Chapter 7, a generalized radio-noise model for substations is proposed, in which there are many discharges sources that are randomly distributed over space and time according to the Poisson field of interferers approach. This allows for the identification of some interesting statistical properties of moments, cumulants and probability distributions. These can, in turn, be utilized in signal processing algorithms for rapid partial discharge's identification, localization, and impulsive noise mitigation techniques in wireless communications in substations. The primary audience for this book is the electrical and power engineering industry, electricity providers and companies who are interested in substation automation systems using wireless communication technologies for smart grid applications. Researchers, engineers and students studying and working in wireless communication will also want to buy this book as a reference.

Dynamic Power Management - Design Techniques and CAD Tools (Hardcover, 1998 ed.): Luca Benini, Giovanni De Micheli Dynamic Power Management - Design Techniques and CAD Tools (Hardcover, 1998 ed.)
Luca Benini, Giovanni De Micheli
R4,143 Discovery Miles 41 430 Ships in 18 - 22 working days

Dynamic power management is a design methodology aiming at controlling performance and power levels of digital circuits and systems, with the goal of extending the autonomous operation time of battery-powered systems, providing graceful performance degradation when supply energy is limited, and adapting power dissipation to satisfy environmental constraints. Dynamic Power Management: Design Techniques and CAD Tools addresses design techniques and computer-aided design solutions for power management. Different approaches are presented and organized in an order related to their applicability to control-units, macro-blocks, digital circuits and electronic systems, respectively. All approaches are based on the principle of exploiting idleness of circuits, systems, or portions thereof. They involve both the detection of idleness conditions and the freezing of power-consuming activities in the idle components. The book also describes some approaches to system-level power management, including Microsoft's OnNow architecture and the Advanced Configuration and Power Management' standard proposed by Intel, Microsoft and Toshiba. These approaches migrate power management to the software layer running on hardware platforms, thus providing a flexible and self-configurable solution to adapting the power/performance tradeoff to the needs of mobile (and fixed) computing and communication. Dynamic Power Management: Design Techniques and CAD Tools is of interest to researchers and developers of computer-aided design tools for integrated circuits and systems, as well as to system designers.

Optimization of Photovoltaic Power Systems - Modelization, Simulation and Control (Hardcover, 2012 ed.): Djamila Rekioua,... Optimization of Photovoltaic Power Systems - Modelization, Simulation and Control (Hardcover, 2012 ed.)
Djamila Rekioua, Ernest Matagne
R4,719 Discovery Miles 47 190 Ships in 18 - 22 working days

Photovoltaic generation is one of the cleanest forms of energy conversion available. One of the advantages offered by solar energy is its potential to provide sustainable electricity in areas not served by the conventional power grid. Optimisation of Photovoltaic Power Systems details explicit modelling, control and optimisation of the most popular stand-alone applications such as pumping, power supply, and desalination. Each section is concluded by an example using the MATLAB (R) and Simulink (R) packages to help the reader understand and evaluate the performance of different photovoltaic systems. Optimisation of Photovoltaic Power Systems provides engineers, graduate and postgraduate students with the means to understand, assess and develop their own photovoltaic systems. As such, it is an essential tool for all those wishing to specialise in stand-alone photovoltaic systems. Optimisation of Photovoltaic Power Systems aims to enable all researchers in the field of electrical engineering to thoroughly understand the concepts of photovoltaic systems; find solutions to their problems; and choose the appropriate mathematical model for optimising photovoltaic energy.

Smart Micro-Grid Systems Security and Privacy (Hardcover, 1st ed. 2018): Anne V. D. M. Kayem, Stephen D. Wolthusen, Christoph... Smart Micro-Grid Systems Security and Privacy (Hardcover, 1st ed. 2018)
Anne V. D. M. Kayem, Stephen D. Wolthusen, Christoph Meinel
R2,653 Discovery Miles 26 530 Ships in 18 - 22 working days

This book is centered on Smart grids and micro-grids, as a cost-effective method of ensuring fair and equitable access to power in urban areas. It also considers scenarios where deploying smart grids can be both cost-prohibitively expensive and logistically challenging. Deploying smart microgrids instead, offers a reliable power solution but, as is the case in smart grids, a key issue is guaranteeing usability, trust, and reliability while protecting against energy theft. This book considers aspects such as state estimation, capacity planning, demand forecasting, price signals, and demand management with respect to energy theft. Straight-forward approaches to provoking energy theft on smart grids and micro-grids include mis-recordings power consumption/generation information and exposures of personally identifiable information or sensitive information. Attack models based on mis-recorded generation and/or consumption data and exposure of personally identifiable information, are also studied. In each case, countermeasures are proposed to circumvent the power theft attacks raised. Researchers in Smart Micro-grids security, cyber-physical systems, and critical infrastructure will want to purchase this book as a reference. Professionals, Researchers, Academics and students working in security general and Security of Critical Infrastructure, Privacy, and Data Sharing will also want to purchase this book as a reference.

Proceedings of the 21st International Symposium on High Voltage Engineering - Volume 1 (Hardcover, 1st ed. 2020): Balint Nemeth Proceedings of the 21st International Symposium on High Voltage Engineering - Volume 1 (Hardcover, 1st ed. 2020)
Balint Nemeth
R4,994 Discovery Miles 49 940 Ships in 10 - 15 working days

High voltage engineering is extremely important for the reliable design, safe manufacture and operation of electric devices, equipment and electric power systems. The 21st International Symposium on High Voltage Engineering, organized by the 90 years old Budapest School of High Voltage Engineering, provides an excellent forum to present results, advances and discussions among engineers, researchers and scientists, and share ideas, knowledge and expertise on high voltage engineering. The proceedings of the conference presents the state of the art technology of the field. The content is simultaneously aiming to help practicing engineers to be able to implement based on the papers and researchers to link and further develop ideas.

Magnetocaloric Energy Conversion - From Theory to Applications (Hardcover, 2015 ed.): Andrej Kitanovski, Jaka Tusek, Urban... Magnetocaloric Energy Conversion - From Theory to Applications (Hardcover, 2015 ed.)
Andrej Kitanovski, Jaka Tusek, Urban Tomc, Uros Plaznik, Marko Ozbolt, …
R4,122 R3,591 Discovery Miles 35 910 Save R531 (13%) Ships in 10 - 15 working days

This book provides the latest research on a new alternative form of technology, the magnetocaloric energy conversion. This area of research concerns magnetic refrigeration and cooling, magnetic heat pumping and magnetic power generation. The book's systematic approach offers the theoretical basis of magnetocaloric energy conversion and its various sub domains and this is supported with the practical examples. Besides these fundamentals, the book also introduces potential solutions to engineering problems in magnetocalorics and to alternative technologies of solid state energy conversion. The aim of the book is therefore to provide engineers with the most up-to-date information and also to facilitate the understanding, design and construction of future magnetocaloric energy conversion devices. The magnetocaloric energy conversion represents an alternative to compressor based refrigerators and heat pumps. It is a serious alternative to power generation with low enthalpy heat sources. This green technology offers an opportunity to use environmentally friendly solid refrigerants and the potentially high energy efficiency follows the trends of future energy conversion devices. This book is intended for postgraduate students and researchers of refrigeration, heat pumping, power generation alternatives, heat regenerators and advanced heat transfer mechanisms.

Polymer Nanocomposites - Electrical and Thermal Properties (Hardcover, 1st ed. 2016): Xingyi Huang, Chunyi Zhi Polymer Nanocomposites - Electrical and Thermal Properties (Hardcover, 1st ed. 2016)
Xingyi Huang, Chunyi Zhi
R3,726 R3,466 Discovery Miles 34 660 Save R260 (7%) Ships in 10 - 15 working days

This book focuses on the fundamental principles and recent progress in the field of electrical and thermal properties of polymer nanocomposites. The physical and chemical natures determining the electrical and thermal properties of polymer nanocomposites are discussed in detail. The authors describe the range of traditional and emerging polymer nanocomposites from nanoparticle and polymer composites to novel nanostructure based polymer nanocomposites. They include novel properties and potential applications, such as high-k, low-k, high thermal conductivity, antistatic, high voltage insulation, electric stress control, and thermal energy conversion among others.

Music Projects (Paperback): R.A. Penfold Music Projects (Paperback)
R.A. Penfold
R1,177 Discovery Miles 11 770 Ships in 10 - 15 working days

Music Projects contains a collection of projects based on music applications. Components are widely available and the circuits form the basis for further experiments. Circuit diagrams are provided, as are photographs of the main circuits. Parts lists are also given.

Robert Penfold's reputation for innovative circuit designs and well-thought out projects is firmly established. His work has been featured regularly in the popular 'Bob's Mini Circuits' section of Electronics, the Maplin magazine. This is a collection of his best ideas from the magazine. Projects include an accented metronome, a tremolo unit, a guitar compressor, a bass fuzz, and a chorus unit.

Advanced Experimental Methods for Noise Research in Nanoscale Electronic Devices (Hardcover, 2004 ed.): Josef Sikula, Michael... Advanced Experimental Methods for Noise Research in Nanoscale Electronic Devices (Hardcover, 2004 ed.)
Josef Sikula, Michael Levinshtein
R7,834 Discovery Miles 78 340 Ships in 18 - 22 working days

A discussion of recently developed experimental methods for noise research in nanoscale electronic devices, conducted by specialists in transport and stochastic phenomena in nanoscale physics. The approach described is to create methods for experimental observations of noise sources, their localization and their frequency spectrum, voltage-current and thermal dependences. Our current knowledge of measurement methods for mesoscopic devices is summarized to identify directions for future research, related to downscaling effects.

The directions for future research into fluctuation phenomena in quantum dot and quantum wire devices are specified. Nanoscale electronic devices will be the basic components for electronics of the 21st century. From this point of view the signal-to-noise ratio is a very important parameter for the device application. Since the noise is also a quality and reliability indicator, experimental methods will have a wide application in the future.

Metal-to-Nonmetal Transitions (Hardcover, 2010 Ed.): Ronald Redmer, Friedrich Hensel, Bastian Holst Metal-to-Nonmetal Transitions (Hardcover, 2010 Ed.)
Ronald Redmer, Friedrich Hensel, Bastian Holst
R2,664 Discovery Miles 26 640 Ships in 18 - 22 working days

This book is devoted to nonmetal-to-metal transitions. The original ideas of Mott for such a transition in solids have been adapted to describe a broad variety of phenomena in condensed matter physics (solids, liquids, and fluids), in plasma and cluster physics, as well as in nuclear physics (nuclear matter and quark-gluon systems). The book gives a comprehensive overview of theoretical methods and experimental results of the current research on the Mott effect for this wide spectrum of topics. The fundamental problem is the transition from localized to delocalized states which describes the nonmetal-to-metal transition in these diverse systems. Based on the ideas of Mott, Hubbard, Anderson as well as Landau and Zeldovich, internationally respected scientists present the scientific challenges and highlight the enormous progress which has been achieved over the last years. The level of description is aimed to specialists in these fields as well as to young scientists who will get an overview for their own work. A common feature of all contribution is the extensive discussion of bound states," i.e. their formation and dissolution due to medium effects. This applies to atoms and molecules in plasmas, fluids, and small clusters, excitons in semiconductors, or nucleons, deuterons, and alpha-particles in nuclear matter. In this way, the transition from delocalized to localized states and vice versa can be described on a common level."

Induction Motors - Analysis and Torque Control (Hardcover, 2001 ed.): Bahram Amin Induction Motors - Analysis and Torque Control (Hardcover, 2001 ed.)
Bahram Amin
R2,801 Discovery Miles 28 010 Ships in 18 - 22 working days

This book provides a thorough approach for mastering the behavior and operation of induction motors, an essential device in the modern industrial world. Its way of presentation renders this book suitable for selfteaching by students, engineers, and researchers in the field of electrical engineering. It covers the modern theory of induction motor applications and control methods. The transient analysis of both three-phase and single-phase induction motors as well as that of the double-cage motors are developed. The principles of such modern control methods as Field-Oriented Control, Direct Torque Control and Computed Charges Acceleration Method are clearly treated in this monograph. Numerous equations, simulations, and figures are presented.

Automotive Electrical Maintenance (Paperback): Stewart Robertson Automotive Electrical Maintenance (Paperback)
Stewart Robertson
R1,181 Discovery Miles 11 810 Ships in 10 - 15 working days

This book describes how to carry out safely a range of basic servicing checks and replacements, such as they will be asked routinely to carry out in a general motor workshop. It assumes no scientific or mathematical background and includes numerous practical assignments to help develop understanding and questions to test comprehension.

Energy Storage for Multigeneration - Desalination, Power, Cooling and Heating Applications (Paperback): Veera Gnaneswar Gude Energy Storage for Multigeneration - Desalination, Power, Cooling and Heating Applications (Paperback)
Veera Gnaneswar Gude
R3,286 Discovery Miles 32 860 Ships in 10 - 15 working days

Energy Storage for Multi-generation: Desalination, Power, Cooling and Heating Applications is designed to help readers implement and manage highly-efficient energy storage enabled industrial processes. The book provides an overview on energy storage technologies, recent trends around the world, and a discussion on the sustainability components of energy storage in different applications. Case studies for integrated power-water production schemes integrated with energy storage are also included, along with tactics to critically evaluate drivers that influence energy storage integration into power-water production schemes, including desalination, tri-generation and poly-generation concepts and configurations. This book will provide all engineers and researchers a better understanding of the application of renewable energy in desalination and the thermodynamic processes and laws involved.

Circuit Analysis for Power Engineering Handbook (Hardcover, 1998 ed.): Arieh L Shenkman, Moses Zarudi Circuit Analysis for Power Engineering Handbook (Hardcover, 1998 ed.)
Arieh L Shenkman, Moses Zarudi
R5,552 Discovery Miles 55 520 Ships in 18 - 22 working days

The study of circuits is the foundation on which most other courses in the electrical engineering curriculum are based. For this reason the first course in circuit analysis must be appropriate to the succeeding specializations, which may be classified into two groups. One is a specialization in electro nics, microelectronics, communications, computers etc. , or so-called low current, low-voltage engineering. The other is in power electronics, power systems, energy conversion devices etc. , or so-called high-current, high voltage engineering. It is evident that although there are many common teaching topics in the basic course of circuit analysis, there are also certain differences. Unfortunately most of the textbooks in this field are written from the 'electronic engineer's viewpoint', i. e. with the emphasis on low current systems. This brought the author to the conclusion that there is a definite disad vantage in not having a more appropriate book for the specializations in high-current, high-voltage engineering. Thus the idea for this book came into being. The major feature distinguishing this book from others on circuit analysis is in delivering the material with a very strong connection to the specializations in the field of power systems, i. e. in high-current and high voltage engineering. The author believes that this emphasis gives the reader more opportunity for a better understanding and practice of the material which is relevant for power system network analysis, and to prepare students for their further specializations.

Electrical Age [microform]; v.38 (Hardcover): Anonymous Electrical Age [microform]; v.38 (Hardcover)
Anonymous
R1,018 Discovery Miles 10 180 Ships in 10 - 15 working days
Dielectric Phenomena In High Voltage Engineering (Hardcover): F. W. Peek Dielectric Phenomena In High Voltage Engineering (Hardcover)
F. W. Peek
R1,022 Discovery Miles 10 220 Ships in 10 - 15 working days

Originally published in 1915. PREFACE: It is the object of the author to give in this book the properties of gaseous, liquid and solid insulations, and methods of utilizing these properties to the best advantage in the problems of highvoltage engineering. Such problems require a knowledge, not only of the laws and mechanism of breakdown of dielectrics as determined by experiment, but also a simple working knowledge of the dielectric circuit. Methods that have proved useful in designing apparatus, transmission lines, insulators, bushings, etc., are discussed and illustrated by practical application. In addition, such subjects as the manner of making extensive engineering investigations and of reducing data, the measurement of high voltages, the effects of impulse and high-frequency voltages, methods of draw- ing dielectric fields, outline of modern theory, various dielectric phenomena, etc., are considered. In all cases where laws and discussions of dielectric phenomena are given, it has been thought best to accompany these with experimental data. Much original work is given, as well as reference to other in- vestigations. The authors extensive research was made possible by facilities afforded by the Consulting Engineering Department of the General Electric Company, for which acknowledgment is made. Thanks are due Mr. H. K. Humphrey, and others, who have greatly assisted in the experiments and calculations. SCHENECTADY, N. Y., April, 1915. Contents include: PAGE PREFACE v DIELECTRIC UNITS xi TABLE OF SYMBOLS, xiii CHAPTER I INTRODUCTION. ..... v ... v General discussion of energy transfer Experimental plots of dielectric and magnetic fields Analogy between magnetic and dielectric fieldsAnalogy with Hooke s Law. CHAPTER II THE DIELECTRIC FIELD AND DIELECTRIC CIRCUIT 8 Mathematical Consideration General treatment of the dielectric field and dielectric circuit with discussion of principles used Parallel planes Field between per- mittance, etc. Concentric cylinders Permittance or capacity flux density and gradient Parallel wires Principles used in superposition of fields determination of resultant fields equation of equipotential surfaces, lines of force and flux density permittance gradient and equigradient surfaces Concentric spheres Spheres Two small equal spheres, field of, and permittance two large equal spheres, gradient, permittance Conditions for spark-over and local breakdown or corona Collected formulae for common electrodes Combinations of dielectrics of different permittivities Dielectric flux refraction Dielectric in series Dielectric in multiple Flux control Imperfect electric elastivity or absorption in dielectrics dielectric hysteresis. CHAPTER III VISUAL CORONA 38 General Summary and Discussion Appearance Chemical action A. C. and D. C. spacing and size of conductor Laws of visual corona formation Theory of corona Electron theory Air films at small spacings Aii density Measuring voltage by corona Conductor material, cables, oil and water on the conductors, humidity. lonization Wave shape, current in wire. Experimental Study and Method of Reducing Experimental Data Tests showing the effects of size and spacing of conductors Air density Temperature Barometric pressure Strength of air films Effect of frequency Conductor material, oil, water, dirt, humidity lonization Current in wire Stranded conductors Split conductors...

Learning and Generalisation - With Applications to Neural Networks (Hardcover, 2nd ed. 2002): Mathukumalli Vidyasagar Learning and Generalisation - With Applications to Neural Networks (Hardcover, 2nd ed. 2002)
Mathukumalli Vidyasagar
R4,963 Discovery Miles 49 630 Ships in 18 - 22 working days

Learning and Generalization provides a formal mathematical theory for addressing intuitive questions of the type: * How does a machine learn a new concept on the basis of examples? * How can a neural network, after sufficient training, correctly predict the outcome of a previously unseen input? * How much training is required to achieve a specified level of accuracy in the prediction? * How can one identify the dynamical behaviour of a nonlinear control system by observing its input-output behaviour over a finite interval of time? The first edition, A Theory of Learning and Generalization, was the first book to treat the problem of machine learning in conjunction with the theory of empirical process, the latter being a well-established branch of probability theory. The treatment of both topics side-by-side leads to new insights, as well as new results in both topics. The second edition extends and improves upon this material, covering new areas including: * Support vector machines (SVM's) * Fat-shattering dimensions and applications to neural network learning * Learning with dependent samples generated by a beta-mixing process * Connections between system identification and learning theory * Probabilistic solution of 'intractable problems' in robust control and matrix theory using randomized algorithms It also contains solutions to some of the open problems posed in the first edition, while adding new open problems. This book is essential reading for control and system theorists, neural network researchers, theoretical computer scientists and probabilists The Communications and Control Engineering series reflects the major technological advances which have a great impact in the fields of communication and control. It reports on the research in industrial and academic institutions around the world to exploit the new possibilities which are becoming available

Electric Power Quality Control Techniques (Hardcover, 1993 ed.): Wilson E. Kazibwe, Musoke H. Sendaula Electric Power Quality Control Techniques (Hardcover, 1993 ed.)
Wilson E. Kazibwe, Musoke H. Sendaula
R4,019 Discovery Miles 40 190 Ships in 18 - 22 working days

The causes and impacts of power disturbances on both sides of the user-utility interface are discussed, and the results of power quality surveys are reviewed. Desirable attributes of monitoring equipment are discussed along with approaches that can be taken by the electric utilities to improve the quality of the power delivered to customers. Users of sensitive devices, such as computers and health care equipment, are given information on power quality improvement equipment, such as uninterruptible power supplies. Includes a glossary.

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