ABSTRACT
This chapter aims to introduce the electric grid by presenting how the power flow occurs and by offering the modeling basics around its major electromagnetic components. When the current value is at full load, voltage, current, and power flowing in the motor are measured. The chapter explains the equivalent circuit representations of magnetically coupled circuits, the concept of a sinusoidally distributed winding, and the winding inductances, among others. The generators produce the electrical energy distributed by a power system. Almost all of the generators in use today produce electrical energy by converting mechanical energy to electrical energy through the action of a magnetic field. Transformers convert AC electrical energy at one voltage magnitude into AC electrical energy at another voltage magnitude. Electric machines are made of either magnetic materials or materials that have magnetic properties, so it is important to review the main magnetic principles, which are used in electric machines.
