The purpose of these notes is be used to introduce Electrical Engineering students to Electrical Machines, Power Electronics and Electrical Drives. They are primarily to serve our students at MSU: they come to the course on Energy Conversion and Power Electronics with a solid background in Electric Circuits and Electromagnetics, and many want to acquire a basic working knowledge of the material, but plan a career in a different area (venturing as far as computer or mechanical engineering). Other students are interested in continuing in the study of electrical machines and drives, power electronics or power systems, and plan to take further courses in the field.

Starting from basic concepts, the student is led to understand how force, torque, induced voltages and currents are developed in an electrical machine. Then models of the machines are developed, in terms of both simplified equations and of equivalent circuits, leading to the basic understanding of modern machines and drives. Power electronics are introduced, at the device and systems level, and electrical drives are discussed.

Equations are kept to a minimum, and in the examples only the basic equations are used to solve simple problems. These notes do not aim to cover completely the subjects of Energy Conversion and Power Electronics, nor to be used as a reference, not even to be useful for an advanced course. They aremeant only to be an aid for the instructor who is working with intelligent and interested students, who are taking their first (and perhaps their last) course on the subject. How successful this endeavor has been will be tested in the class and in practice.