"Dynamic map" analysis of the principle of various types of motors!

A motor is an electromagnetic mechanical device that converts electrical energy and mechanical energy into each other. Motors generally have two applications: the first is to convert mechanical energy into electrical energy, called the generator; the second is to convert electrical energy into mechanical energy, called the electric motor.

The motor operating principle is based on the law of electromagnetic induction and the law of electromagnetic force. When the motor performs energy conversion, it should have two major components that can move relative to each other: the component that establishes the excitation magnetic field, and the inductive component that induces the electromotive force and flows through the working current. Of these two components, the stationary one is called the stator, and the rotating motion is called the rotor. There is an air gap between the stator and the rotor for the rotor to rotate.

The electromagnetic torque is generated by the interaction of the excitation magnetic field in the air gap with the magnetic field established by the current in the inductive component. By the action of electromagnetic torque, the generator absorbs mechanical power from the mechanical system, and the motor outputs mechanical power to the mechanical system. The two magnetic fields are established in different ways to form different types of motors.

Divided by working power type

Divided by structure and working principle

Divided by startup and operation

Divided by the structure of the rotor