Three Phase

A tool for the study of asymmetrical three phase voltages and current analysis

“Three Phase Electrical Circuit Analysis” is intended to assist undergraduate engineering students who are studying the basic principles of electrical circuit analysis. Its purpose is to supplement the pre-scribed text book for the course. While the focus of the book is on three phase circuits, the basic principles of AC generation and single-phase circuit analysis is covered in the first two chapters. The analysis of three phase systems connected in both Star and Delta configuration are explained.

AC voltage frequency changes is one of the most important functions of solid state power converters. The most desirable features in frequency converters are the ability to generate load voltages with arbitrary amplitude and frequency, sinusoidal currents and voltages waveforms; the possibility of providing unity power factor for any load; and, finally, a simple and compact power circuit. Over the past decades, a number of different frequency converter topologies have appeared in the literature, but only the converters with either a voltage or current DC link are commonly used in industrial applications.