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Electric Machinery and Power System Fundamentals

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The basic purpose of this book is to teach machinery and power system principles at a level suitable to the one semester or two quarter level survey course found in many electrical engineering programs. It retains the core topics from “electric machinery fundamentals” and adds material on transmission lines, power system representation, power flow studies, and fault analysis.rnMany electrical engineering programs traditionally offered a two semester sequence covering electrical machinery and power systems, with one semester devoted to machines and one to power systems. Unfortunately, the pressure in recent years to cram more into the EE curriculum has caused this sequence to be scaled back to a shorter survey course at many schools. This shorter course attempts to select specific topics from the machinery/power spectrum, and to give students the flavor of the field. Its content veries widely from school to school, which means that a text intended fro the course must include far more material than can be covered, structured so that the topics can be chosen on an a la carte basis. This text is intended to fulfill that requirement.rnAnother problem with traditional power books is that they have tended to be heavily dominated by “how to” recipes, at the expense of explaining basic principles. For example, most power system textbooks devote one or two chapters to calculating the series inductance and shunt capacitance of transmission lines for different geometries. In the real world, though, very few engineers ever do this. Instead, they look up the per mile characteristics of transmission lines in prepared lookup tables. In contrast, this book derives transmisiion line inductance and capacitance for one simple case, and uses those equations to describe the physical principles that operate on all transmission lines. It then concentrates on how to use the transmission line values, withoutspending the two chapters on how to calculate them.rnAnother exampl occurs with the bus admittance matrix Ybus and the bus impedance matrix Zbus of a power system. Traditional power text teach a number of ways to build Ybus and Zbus often taking up most of two chapters with this material. This book teaches a single way to derive Ybus and calculates Zbus as the inverse of Ybus using MATLAB. This is not the most efficient way to perform the calculation for systems of 100 buses, but it works well for any power system that could be reasonably included in a classroom exercise. The time saved by not doing all the different versions of the calculations is spent on actually using Ybus and Zbus to solve power flow and fault current problems. This is consistent with the way most engineers actually work, since the mechanics of building Ybus and Zbus are usually buried inside commercial power system software packages, and the engineers concentrate on the power flow and fault current calculations that result.rnAnother example occurs with power flow calculations. Most books spend a great del of time introducing the details of network representations with special components such as tap changing or phase shifting transformers. They introduce multiple techniques to solve the resulting systems of equations: Gauss Sceidel iteration and Newton-Raphson iteration. They also tend to include only partial examples because the complete calculations are just too difficult and time consuming to do by hand. This book introduces only the simplest solution technique: Gauss_Seidel iteration. By using MATLAB, the examples can be complete solutions, because the mathematics is no longer tedious. In addition, the book introduces a functional MATLAB power flow analysis program, which the students can use to solve significant power flow problems and learn about system behavior. The end of chapter problems then support “What if?” exercises. For example, one problem examines the effect of capacitors on voltage and current level in lines. Other problems examine the steady state effects of adding or removing transmission lines a power system.rnIn general, if there are multiple ways to solve a problem, this book introduces only the most straightforward method. It provides software to ease calculations, exposing the underlying principles. In this way, the book attempts to compress the course material while preserving its essence.rn

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Ketersediaan

090101099

Tersedia

Informasi Detil

Judul Seri

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No. Panggil

621.31 CHA e

Penerbit

McGraw - Hill Companies, Inc : Boston., 2002

Deskripsi Fisik

xix, 673 p.

Bahasa

English

ISBN/ISSN

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Klasifikasi

621.31 CHA e

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

-

Subyek

Electric Machinery ; Electric Power System

Info Detil Spesifik

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Pernyataan Tanggungjawab

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Versi lain/terkait

Lampiran Berkas

Komentar

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