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Electrical Machines, Drives, and Power Systems

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This fifth edition was prompted in part by the great increase of computers in industrial controls and automation, which has produced computer programs that can simulate relays and relay contacts. These on/off discrete controls have eliminated the wiring and installation of hardware components in favor of virtual relays and contacts that can be programmed on a keyboard. The devices that perform these operations are called programmable logic controllers (PLCs), or simply programmable controllers. These devices weer initially stand alone computers that controlled a specific robot or manufacturing operation. However, with the advent of the internet, they have now been integrated with the overall manufacturing process, leading seamlessly to integration with management, sales, procurement, and consumer satisfaction.rnThe relay control of machines covered in chapter 20 is now supplemented by coverage of PLC controls in chapter 31. Chapter 31 covers the basic principles of PLCs and shows, by way of example, how they are used in running the activities of a large service enterprise. This new chapter illustrates how these trendsetting computer based activities involving controls and automation are being integrated with other business activities, including e commerce.rnThe high switching frequencies of IGBTs permit the use of pulse width modulation techniques in power converters. This, in turn, enables torque and speed control of induction motors down to zero speed. This was not feasible in rectangular wave converters that were employed only a few years ago.rnThe subject matter covered in this book requires only a background in basic circuit theory, algebra, and some trogonometry.rnOwing to its user friendly treatment of even complex topics, this book will meet the needs of a broad range of readers. First, it is appropriate for students following a two year electrical program in community colleges, technical institutes, and universities. Owing to its very broad coverage, the text can also be incorporated in a 4 year technology program. Many universities have adopted the book for their electric power service courses.rnInstructors responsible for industrial training will find a wealth of practical information that can be directly applied to that greatest laboratory of all the electrical industry itself.rnFinally, at a time when much effort is being devoted to continuing education, this book, with its many worked out problems, is particularly suitable for self study.rnThe exercises at the end of each chapter are divided into three levels of learning practical, intermediate, and advanced. Furthermore, to encourage the reader to solve the problems, answers are given at the end of the book. A solutions manual is also available for instructors. The industrial application problems that appear at the end of most chapters will also appeal to hands on users. The reader is invited to consult the list of books, technical articles, and websites in the reference section toward the end of the book.rnA quick glance through the book shows the importance given to photographs. All equipment and systems are illusttrated by diagrams and pictures, showing them in various stages of construction or in actual use. Some students may not have had the opportunity to visit an industrial plant or to see at close hand the equipment used in the transmission and distribution of electrical energy. The photographs, help convey the magnificent size of these devices and machines.rnThroughout the 31 chapters, a concious effort was made to establish coherence, so that the reader can see how the various concepts fit together. For example, the terminology and power equations for synchronous machines are similar to those found in transmission lines. Transmission lines, in turn, bring up the question of reactive power. And reactive power is an important aspect in electronic converters. Therefore, knowledge gained in one sector is strengthened and broadened when it is applied in another. As a result, the learning of electrical machines, drives, and power systems becomes a challenging, thought provoking experience.rnIn order to convey the real world aspects of machinery and power systems, particular attention has been paid to the inertia of revolving masses, the physical limitations of materials, and the problems created by heat. This approach falls in line with the multidiciplinary programs of many colleges and technical institutes.rn

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Ketersediaan

090100935

Tersedia

Informasi Detil

Judul Seri

-

No. Panggil

621.3 WIL e

Penerbit

Prentice Hall : New Jersey., 2002

Deskripsi Fisik

xix, 886 p.

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

621.3 WIL e

Tipe Isi

-

Tipe Media

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Tipe Pembawa

-

Edisi

Fifth Edition

Subyek

Electric Machinery ; Electric Driving ; Elecrtic P

Info Detil Spesifik

-

Pernyataan Tanggungjawab

-

Versi lain/terkait

Lampiran Berkas

Komentar

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