ABSTRACT
Electric machines are sets of magnetically and electrically coupled electric circuits with one movable element (rotor), which convert electric energy into mechanical energy (motor mode) or vice versa (generator mode). They are based on the law of energy conversion and on Faraday’s law for bodies in relative motion. In the following text, we will discuss the energy conversion principle of electric machines work, and introduce the basic types of electric machines, by making use of the frequency theorem [1].
