Electric Machinery Fundamentals

This book explains fact in clear concise simplistic form and descriptions which are a lot more easily understood than many textbooks I have read in the past …..recommended to me by a lecturer and he was not wrong ..!Thoroughly recommended …..

An above average textbook. Easy to understand and a good amount of information conveyed at the same time.

This book is a great book to those who never had any contact withelectrical machines, it explains the constructive aspects of subjectin way way that they gain physical meaning. A point that is missingin many books. The only reason that it's four stars and not five isthat in this edition the power electronics chapter was removed. Forthose who red the second edition there will be some missing feelings.Althogh it stills a great book.

its the book i wanted; its the book i received

good

Great condition

The first five chapters of this book really suffice for a good intro to electric machines. Can't really say much negative at all except in chapter 7 in the section on the rotor circuit model. Here he uses an ad hoc claim that rotor circuit voltage is directly proportional to slip-true for any positive power of slip at locked rotor and sync, slip 1 and 0 respectively. Linearity totally unjustified. This is done to derive the proper slip dependent impedance. This impedance can be derived from the model and circuit theory taking motion into account with more work and this is valid but too difficult for a basic intro(actually by reference frame arguments the voltage too has a dependence on slip-nonlinear-and is not the constant locked rotor voltage-computer simulation needed). Forgivable considering the scope and intended audience-the claim just comes across as a plausibility which will lead to the slip having the right power-it's an approximation that most if not all use in circuit model estimates. Nevertheless it deserves a 5-star particularly for treatment of transformers and ac machinery. As an aside I'll give the justification for the author's ad hoc claim. In the transformer model which is what is used in chapter 7 to model the 3-phase induction motor, the rotor circuit corresponds to the secondary winding of the transformer. The voltage induced in the secondary winding of the transformer is proportional to the frequency of the field that moves through the winding (through the iron core)-justified in chapter 2-Faraday's Law applied at the secondary winding with rms averaging of the sinusoidal. This is a fixed or stationary winding with a varying magnetic field moving through it. Our rotor circuit must be viewed as stationary, i.e. we must find the frequency of the magnetic field as seen in the fixed rotor frame, this now looks like the secondary winding. Remembering the frequency of the magnetic field is essentially its angular speed (rotating field at constant speed), the frequency as seen in the fixed rotor frame is the field angular speed in this frame, which is the difference of the angular speeds (at a particular instant for the rotor!), but this is equivalent to slip times frequency of the magnetic field-you know where 2Pi goes. This then is slip times the secondary voltage-approximate since this secondary voltage is an rms value in the transformer equation. Q.E.D. His claim is now justified for the transformer model. The secondary voltage used is the locked rotor rms voltage, so in the end you get an estimate of average torque at a given slip-extended to a torque speed curve. Hope this clarification helps. A second book on power electronics would help. The chapter that used to be included on this was just an outline really.

Come in in good wrapped and clean condition. It's a worthy deal.

E' un libro che ho appena iniziato a studiare, ma a prima vista il libro è una perfetta unione di elettronica di potenza, sistemi elettrici e macchine elettriche, con particolare risalto alle macchine elettriche e all'elettronica di potenza. Concettualmente valido, semplice nell'esposizione e pieno di figure e foto, consente cosi una comprensione reale della materia.

Stephen J Chapman really did an extraordinary job. The topics are excellently organized and the author really takes care of you. Very neat explanations. The book is really unmatchable.For any book, here are too many reviews. Some are contradictory too. I always suggest one to go through few pages in PDF available online. This book is available online. I hope it will do same to you, the way it did to me.

Content of the book is really good.Author has taken an extra step to make it easy for the reader to understand the subject easily.Have other authors book as well and hand down, this is the easiest and detailed one.Go for it!Don't think twice. 😊

Will definitely return to the store next time for more textbooks! Condition was good deliverry was in tiime what more can I say, keep it guys!