How complex are electric motors ? Why do they seem so familiar yet remain so elusive? I've answered similar questions many times, but most of them are not professionals. It's impossible to explain them all in a few words, and the information they provide is often one-sided, fragmented, and lacks rigor.
This leads to a discussion on how windings and their potentials play a magical and wonderful role inside an AC motor.
AC rotating motors are mainly divided into two categories: synchronous motors and asynchronous motors. Although the excitation methods and operating characteristics of the two types of motors are very different, the electromagnetic phenomena that occur inside the motors and the electromechanical conversion principles are the same, and they have many common problems, namely the windings, electromotive force and magnetomotive force of AC motors.
