Fundamentals Of Electrical Drives - Veltman André; Pulle Duco W.J.; De Doncker R.W. | Libro + Cd-Rom Springer Netherlands 07/2007 - HOEPLI.it


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veltman andré; pulle duco w.j.; de doncker r.w. - fundamentals of electrical drives

Fundamentals of Electrical Drives

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Lingua: Inglese
Pubblicazione: 07/2007
Edizione: 2007





Sommario

Dedication. Foreword. Preface. Acknowledgments. Symbol conventions. 1. INTRODUCTION. 1.1 Why use electro-mechanical energy conversion? 1.2 Key components of an Electrical drive system. 1.3 What characterizes high performance drives? 1.4 Notational conventions. 1.5 Use of building blocks to represent equations. 1.6 Magnetic principles. 1.7 Machine sizing principles. 1.8 Tutorials for Chapter 1. 2. SIMPLE ELECTRO-MAGNETIC CIRCUITS. 2.1 Introduction. 2.2 Linear inductance. 2.3 Coil resistance. 2.4 Magnetic saturation. 2.5 Use of phasors for analyzing linear circuits. 2.6 Tutorials for Chapter 2. 3. THE TRANSFORMER. 3.1 Introduction. 3.2 Ideal transformer (ITF) concept. 3.3 Basic transformer. 3.4 Transformer with magnetizing inductance. 3.5 Steady-state analysis. 3.6 Three inductance model. 3.7 Two inductance models. 3.8 Mutual and self inductance based model. 3.9 Two inductance model with coil resistance. 3.10 Tutorials for Chapter 3. 4. THREE-PHASE CIRCUITS. 4.1 Introduction. 4.2 Star/Whye connected circuit. 4.3 Delta connected circuit. 4.4 Space vectors. 4.5 Amplitude and power invariant space vectors. 4.6 Application of space vectors for three-phase circuit analysis. 4.7 Relationship between space vectors and phasors. 4.8 Tutorials for Chapter 4. 5. CONCEPT OF REAL AND REACTIVE POWER. 5.1 Introduction. 5.2 Power in single phase systems. 5.3 Power in three phase systems. 5.4 Phasor representation of real and reactive power. 5.5 Tutorials for Chapter 5. 6. SPACE VECTOR BASED TRANSFORMER MODELS. 6.1 Introduction. 6.2 Development of a space vector based ITF model. 6.3 Two-phase ITF based generalized transformer model. 6.4 Tutorials for Chapter 6. 7. INTRODUCTION TO ELECTRICAL MACHINES. 7.1 Introduction. 7.2 Ideal Rotating Transformer (IRTF) concept. 7.3 Conditions required to realize constant torque. 7.4 General machine model. 7.5 Tutorials for Chapter 7. 8. VOLTAGESOURCECONNECTEDSYNCHRONOUS MACHINES. 8.1 Introduction. 8.2 Machine configuration. 8.3 Operating principles. 8.4 Symbolic model. 8.5 Generalized symbolic model. 8.6 Steady-state characteristics. 8.7 Tutorials for Chapter 8. 9. VOLTAGESOURCECONNECTEDASYNCHRONOUS MACHINES. 9.1 Introduction. 9.2 Machine configuration. 9.3 Operating principles. 9.4 Symbolic model, simplified version. 9.5 Generalized symbolic model. 9.6 Steady-state analysis. 9.7 Tutorials for Chapter 9. 10. DIRECT CURRENT MACHINES. 10.1 Introduction. 10.2 Machine configuration. 10.3 Operating principles. 10.4 Symbolic model, simplified form. 10.5 General symbolic DC machine model. 10.6 Steady-state characteristics. 10.7 Tutorials for Chapter 10. 11. ANALYSIS OF A SIMPLE DRIVE SYSTEM. 11.1 Introduction. 11.2 Basic single phase uni-polar ‘drive’ circuit. 11.3 Basic single phase bipolar ‘drive’ circuit. 11.4 Control algorithm. 11.5 Tutorials for Chapter 11. Appendices. A Concept of sinusoidal distributed windings. B Generic module library. References. Index.




Trama

Electrical drives consist of a number of components, the electrical machine, converter and controller, all of which are discussed at various levels. A brief r´esum´e of magnetic and electrical circuit principles is given in chapter 1 together with a set of generic building modules which are used throughout this book to represent dynamic models. Chapter 2 is designed to familiarize the reader with the process of building a dynamic model of a coil with the aid of generic modules. This part of the text also contains an introduction on phasors as required for steady state analysis. The approach taken in this and the following chapters is to present a physical model, which is then represented by a symbolic model with the relevant equation set. A generic model is then presented which forms the basis for a set of ‘build and play’ simulations set out in various steps in the tutorial at the end of the chapter. Chapter 3 introduces a single phase ‘ideal transformer’ (ITF) which forms the basis of a generic transformer model with leakage and magnetizing inductance. A phasor analysis is given to familiarize the reader with the steady state model. The ’build and play’ tutorials at the end of the chapter give the reader the opportunity to build and analyse the transformer model under varying conditions. It is emphasized that the use of these ‘build and play’ is an essential component of the learning process throughout this book. Chapter 4 deals with star and delta connected three phase systems and introduces the generic modules required to model such systems. The space vector type representation is also introduced in this part of the text. A set of ‘build and play’ tutorials are given which reinforce the concepts introduced in this chapter. Chapter 5 deals with the concepts of real and reactive power in single as well as three phase systems. Additional generic modules are introduced in this part of text and tutorial examples are given to familiarize the reader with this material. Chapter 6 extends the ITF concept introduced earlier to a space vector type model which is represented in a symbolic and generic form. In addition a phasor based model is also given in this part of the text. The ‘build and play’ tutorials are self-contained step by step simulation exercises which are designed to show the reader the operating principles of the transformer under steady state and dynamic conditions. At this stage of the text the reader should be familiar with building and using simulation tools for space vector type generic models which form the basis for a transition to rotating electrical machines. Chapter 7 introduces a unique concept namely the ‘ideal rotating transformer’ (IRTF), which is the fundamental building block that forms the basis of the dynamic electrical machine models discussed in this book. A generic space vector based IRTF model is given in this part of the text which is instrumental in the process of familiarizing the reader with the torque production mechanism in electrical machines. This chapter also explores the conditions under which the IRTF module is able to produce a constant torque output. It is emphasized that the versatility of the IRTF module extends well beyond the electrical machine models discussed in this book.These advanced IRTF based machine concepts are discussed in a second book ‘Advanced electrical Drives’ currently under development by the authors of this text. The ‘build and play’ tutorials at the end of thischapter serve to reinforce the IRTF concept and allow the reader to ‘play’ with the conditions needed to produce a constant torque output from this module. Chapters 8-10 deal with the implementation of the IRTF module for synchronous, asynchronous and DC machines. In all cases a simplified IRTF based symbolic and generic model is given of the machine in question to demonstrate the operating principles. This model is then extended to a ‘full’ dynamic model as required for modelling standard electrical machines. A steady state analysis of the machines is also given in each chapter. In the sequel of each chapter a series of ‘build and play’ tutorials are introduced which take the reader through a set of simulation examples which steps up from a very basic model designed to show the operating principles, to a full dynamic model which can be used to represent the majority of modern electrical machines in use today. Chapter 11 deals with the converter, modulation and control aspects of the electrical drive at a basic level. The half bridge converter concept is discussed together with the pulse width modulation (PWM) strategies that are in use in modern drives. A predictive dead-beat current control algorithm is presented in combination with a DC machine. The ‘build and play’ tutorials in the sequel of this chapter clearly show the operating principles of PWM based current controlled electrical drives.





Autore

André Veltman is a Senior Lecturer at Technische Universiteit Eindhoven, the Netherlands and runs his own consulting company, Piak electronic design b.v.

Duco W.J. Pulle is a consultant with Zener Electric, Australia and a former Associate Professor of Lund University, Sweden.

Rik W. De Doncker is Professor and director of the Institute for Power Electronics and Electrical Drives (ISEA) at RWTH-Aachen University, Germany.








Altre Informazioni

ISBN:

9781402055034

Condizione: Nuovo
Collana: Power Systems
Dimensioni: 235 x 155 mm Ø 784 gr
Formato: Copertina rigida
Pagine Arabe: 345
Pagine Romane: xxi






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