1. According to the type of power supply: can be divided into DC motor and AC motor.
Direct current motor:
According to the structure and working principle can be divided: brushless DC motor and brush DC motor.
Can be divided into permanent magnet DC motor and electromagnetic DC motor.
Permanent magnet DC motor according to the material is divided into rare earth, ferrite, alnico permanent magnet DC motor.
Electromagnetic DC motor according to the excitation method is divided into series excitation, parallel excitation, other excitation and re-excitation DC motor.
AC motors can be divided into: single-phase motors and three-phase motors
2. According to the structure and principle of operation: can be divided into DC motors, asynchronous motors, synchronous motors.
The rotor speed of an asynchronous motor is always slightly lower than the synchronous speed of the rotating magnetic field.
Synchronous motor rotor speed is independent of the size of the load and is always maintained for the synchronous speed.
3. According to the purpose, there are drive motors and control motors.
4. According to the operating speed, there are high-speed motors, low-speed motors, constant-speed motors and speed motors.
Low-speed motors are divided into gear motors, electromagnetic reduction motors, torque motors and claw pole synchronous motors.