System normalization and iron saturation based on generalized coupled circuits analysis as fundamentals for electric machines modeling course

This paper describes the use of a suitable approach to teaching generalized magnetically coupled electric circuits as an introduction chapter to the electric machines modeling and simulation course for power engineering students. The teaching methodology focuses on some common concepts and fundamentals of electrical machine theory such as machine inductances (self, leakage and mutual), equivalent circuits, magnetic circuits, iron saturation, reciprocal per unit system, state modeling and simulation, so that the modeling approach of each type of classical machine can easily be deduced from the general theory established by the chapter on magnetically coupled electric circuits.