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เนื้อหาย่อ : The basic purpose of this book is to teach machinery and power system princi- ples at a level suitable to the one-semester or two-quarter junior-level survey course found in many electrical engineering programs. It retains the core top- ics from my Electric Machinery Fundamentals,' and adds material on transmission lines, power system representation, power-flow studies, and fault analysis. Many electrical engineering programs traditionally offered a two-semester se- quence covering electrical machinery and power systems, with one semester devoted machines and one to power systems. Unfortunately, the pressure in rece cram more and more into the EE curriculum has caused this sequence to be scaled to a shorter survey course at many schools. This shorter course a select specific topics from the machinery/power spectrum, and to give students the "flavor" of the field. Its content varies widely from school to school, which means t a text intended for the course must include far more material th covered, structured so that the topics can be chosen on an a la carte basis. This text is intended to fulfil that requirement. Another problem with traditional power books is that they have tended to be y dominated by "how to" recipes, at the expense of explaining basic princ For example, most power system textbooks devote one or two entire chapters to cal- culating the series inductance and shunt capacitance of transmission lines for differ- ent geometries. In the real world, though, very few engineers ever do this. Instead, y look up the per-mile characteristics of transmission lines in prepared bles. In contrast, this book derives transmission line inductance and capacitance for one simple case, and uses those equations to describe the physical principles that op- erate on all transmission lines. It then concentrates on how to use the transmission line values, without spending the two chapters on how to calculate them. Another example occurs with the bus admittance matrix Yous and the bus im- pedance matrix Zous of a power system. Traditional power texts teach a number of ways to build Y bus and Zous, often taking up most of two chapters with this material. This book teaches a single way to derive Yous, and calculates Zous as the inverse of bus using MATLAB. This is not the most efficient way to perform the calculation for systems of 1000 busses, but it works well for any power system that could be rea- sonably included in a classroom exercise. The time saved by not doing all the differ- ent versions of the calculations is spent on actually using Y bus and Zbus to solve power-flow and fault current problems. This is consistent with the way most engi- neers actually work, since the mechanics of building Ybus s and Zous are usually buried