Electric Power System Components Transformers and Rotating Machines
Book Details :
LanguageEnglish
Pages485
FormatPDF
Size12.6 MB


Electric Power System Components Transformers and Rotating Machines



Electric Power System Components Transformers and Rotating Machines by Robert Stein, William T. Hunt Jr. | PDF Free Download.

Electric Power System Components Contents


  • The Electric Power System 
  • Faraday's Induction Law
  • Magnetic Circuits
  • Sinusoidal Steady State 
  • Transformers 
  • Transformer Connections
  • Electromechanical Energy Conversion
  • Distributed Windings
  • Three-phase Synchronous Machines
  • Synchronous Motors
  • Synchronous Generators
  • Synchronous Machines With Salient Poles
  • Three-phase Induction Machines 
  • Application of Induction Motors
  • Symmetrical Components
  • Two-phase Servomotors 
  • Single-phase Motors
  • Commutator Machines 
  • D-C Motors
  • D-C Generators 
  • Synchros

Preface to Electric Power System Components PDF


There are good reasons why the subject of electric power engineering, after many years of neglect, is making a comeback in the undergraduate curriculum of many electrical engineering departments.

The most obvious is the current public awareness of the "energy crisis." More fundamental is the concern with social responsibility among college students in general and engineering students in particular.

After all, electric power remains one of the cornerstones of our civilization, and the well-publicized problems of ecology, economy, safety, dependability, and natural resources management pose ever-growing challenges to the best minds in the engineering community.

Before an engineer can successfully involve himself in such problems, he must first be familiar with the main components of electric power systems. This textbook will assist him in acquiring the necessary familiarity.

The course for which Electric Power System Components is mainly intended can be taken by any student who has had some circuit analysis (using discrete elements, and including sinusoidal steady-state) and elementary electromagnetic field theory. Most students taking the course will be in their junior or senior years.

Once the course is completed, students may decide to go more deeply into the design and operation of these components and study them on a more advanced level, or they may direct their attention to the problems of the system itself, problems which are only hinted at briefly at various points herein.

Quite a few of the subjects covered here have been known and described by earlier writers. In fact, the older textbook literature in this field constitutes valuable heritage.

Nevertheless, and contrary to widespread belief, there also have been great changes in the practice of electric power engineering in recent years.

Moreover, the electrical engineering students for whom this text is largely written bring a changed background of prerequisite training and knowledge to this study.

All these changes call for a completely fresh start, not just a patchwork of adjustments and insertions to "update" obsolete treatments.

The authors, who have devoted half a lifetime to the teaching of this subject, have given much thought to the changing scene in electric power engineering and to the changing needs of their students.

Some of the principles used in writing this text are given below. a. To be at the right level for its readers, a textbook must be understandable to less-gifted students and yet be challenging enough to hold the interest of top-rated students. b.

An intelligent reader wants more than mere facts. He asks for explanations of such facts, for the logic behind them, and the connections between them.

A textbook should satisfy and encourage this attitude as much as possible. c. Beware of time-honored traditions! It is true that many such traditions have earned respect because of their excellence, but many faulty explanations and illogical sequences have been perpetuated through generations of textbook authors.

On the whole, it may be said that the more widely accepted the treatment of a subject, the more it should be scrutinized with suspicion before it is adopted. d.

In the past 10 to 20 years, the most significant change affecting electric power engineering has been the ascendency of electronic controls.

This topic must be integrated into the text, appearing wherever it is pertinent, not just in an added chapter or appendix. e.

On the other hand, the digital computer, while having revolutionized the actual operation of power systems, as well as the design of their components, has only a minor influence on the basic theory and the understanding of these components. f.

The basic aim of Electric Power System Components is to impart to the reader an understanding of practical devices, not to give him additional practice in the use of the mathematical tools of linear systems theory or to preempt the teaching of related subjects such as control systems engineering.

The first two chapters are intended as an introduction, to clarify the purpose of the devices to be studied and the laws of nature on which their operation is based.

As far as the further choice and sequence of subjects are concerned, magnetic circuits are a necessary prerequisite to all the devices to be studied, and among those, it is logical and helpful to analyze transformers before rotating machines.

Two chapters {7 and 8) serve as a transition from transformers to emotional devices. All the basic types of motors and generators are covered, with two or more chapters devoted to the more important ones.

At the end of most chapters, there are sections containing illustrative examples and practice problems. Answers to problems are given at the end of the Electric Power System Components PDF.

Our thanks are due to the Department of Electrical and Computer Engineering of the University of Massachusetts in Amherst, for making the facilities of the University available.

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