Type of motor

1. According to the working power supply classification According to the different working power supply of the motor, it can be divided into DC motor and AC motor. Among them, AC motors are also divided into single-phase motors and three-phase motors.

2. According to the structure and working principle, the motor can be divided into DC motor, asynchronous motor and synchronous motor according to the structure and working principle. Synchronous motors can also be divided into permanent magnet synchronous motors, reluctance synchronous motors and hysteresis synchronous motors. Asynchronous motors can be divided into induction motors and AC commutator motors. Induction motors are further divided into three-phase asynchronous motors, single-phase asynchronous motors, and shaded-pole asynchronous motors. AC commutator motors are further divided into single-phase series excitation motors, AC and DC motors and repulsion motors.

According to the structure and working principle, DC motors can be divided into brushless DC motors and brushed DC motors. Brushed DC motors can be divided into permanent magnet DC motors and electromagnetic DC motors. Electromagnetic DC motors are further divided into series-excited DC motors, shunt-excited DC motors, separately-excited DC motors and compound-excited DC motors. Permanent magnet DC motors are further divided into rare earth permanent magnet DC motors, ferrite permanent magnet DC motors and AlNiCo permanent magnet DC motors.

3. Classification according to starting and running mode Motors can be divided into capacitor-started single-phase asynchronous motors, capacitor-running single-phase asynchronous motors, capacitor-start running single-phase asynchronous motors and split-phase single-phase asynchronous motors according to starting and running methods.

4. Classification by use Motors can be divided into drive motors and control motors according to their uses. Motors for driving are further divided into motors for power tools (including tools for drilling, polishing, polishing, grooving, cutting, reaming, etc.), motors for home appliances (including washing machines, electric fans, refrigerators, air conditioners, tape recorders, video recorders, video discs) Motors for machines, vacuum cleaners, cameras, hair dryers, electric shavers, etc.) and other general small mechanical equipment (including various small machine tools, small machinery, medical equipment, electronic instruments, etc.). Control motors are further divided into stepper motors and servo motors.

5. According to the structure of the rotor, the motor can be divided into a squirrel induction motor (the old standard is called a squirrel-cage asynchronous motor) and a wound rotor induction motor (the old standard is called a wound asynchronous motor) according to the structure of the rotor.

6. Classification by operating speed Motors can be divided into high-speed motors, low-speed motors, constant-speed motors, and speed-regulated motors according to operating speeds. Low-speed motors are further divided into gear reduction motors, electromagnetic reduction motors, torque motors and claw-pole synchronous motors. In addition to the stepless constant speed motor, the stepless constant speed motor, the stepless variable speed motor and the stepless variable speed motor, the speed regulating motor can also be divided into the electromagnetic speed regulating motor, the DC speed regulating motor, the PWM variable frequency speed regulating motor and the Switched reluctance motor. The rotor speed of an asynchronous motor is always slightly lower than the synchronous speed of the rotating magnetic field. The rotor speed of a synchronous motor is always maintained at a synchronous speed irrespective of the size of the load.