Specific division standards are as follows:
1, according to the type of working power supply: can be divided into DC motors and AC motors.
1) DC motors can be divided according to the structure and working principle: brushless DC motors and brushed DC motors.
Brush DC motor can be divided into: permanent magnet DC motor and electromagnetic DC motor.
Electromagnetic DC motor division: series-excited DC motor, parallel-excited DC motor, other-excited DC motor and compound-excited DC motor.
Permanent magnet DC motor division: rare earth permanent magnet DC motor, ferrite permanent magnet DC motor and alnico permanent magnet DC motor.
2) which AC motors can also be divided: single-phase motors and three-phase motors.
2, according to the structure and working principle can be divided: can be divided into direct current motor, asynchronous motor, synchronous motor.
1) synchronous motor can be divided into: permanent magnet synchronous motor, reluctance synchronous motor and hysteresis synchronous motor.
2) Asynchronous motors can be divided into: induction motors and AC commutator motors.
Induction motors can be divided into: three-phase asynchronous motors, single-phase asynchronous motors and shaded-pole asynchronous motors.
AC commutator motor can be divided into: single-phase series-excited motor, AC and DC dual-use motor and push repulsion motor.
3, according to the starting and running mode can be divided into: capacitor starting single-phase asynchronous motor, capacitor running single-phase asynchronous motor, capacitor starting running single-phase asynchronous motor and split-phase single-phase asynchronous motor.
4, according to the use can be divided: drive motor and control motor.
1) drive motor can be divided into: electric tools (including drilling, polishing, grinding, slotting, cutting, reaming and other tools) with electric motors, home appliances (including washing machines, electric fans, refrigerators, air conditioners, tape recorders, video recorders, video recorders, video disk players, vacuum cleaners, cameras, hairdryers, electric shavers, etc.) with electric motors and other general-purpose small machinery and equipment (including a variety of small machine tools.), Small machinery, medical equipment, electronic instruments, etc.) with electric motors.
2) control motor is divided into: stepping motor and servo motor.
5, according to the structure of the rotor can be divided into: cage-type induction motor (the old standard called squirrel cage asynchronous motor) and wire-wound rotor induction motor (the old standard called wire-wound asynchronous motor).
6, according to the operating speed can be divided into: high-speed motor, low-speed motor, constant speed motor, speed motor. Low-speed motor is divided into gear motor, electromagnetic reduction motor, torque motor and claw pole synchronous motor.
Expanded informationPermanent magnet DC motor by the stator pole, rotor, brush, shell, etc., the stator pole using permanent magnets, ferrite, alnico, neodymium-iron-boron and other materials. According to its structural form, it can be divided into cylinder type and tile type and so on. Most of the electric machines used in video recorders are cylindrical magnets, while most of the electric motors used in power tools and automotive appliances use special block type magnets.
The rotor is generally made of laminated silicon steel sheets, and the number of slots in the rotor is less than that of electromagnetic DC motors. Most of the low-power motors used in video recorders are 3-slot, and the higher-grade ones are 5-slot or 7-slot. Enameled wire is wound between the two slots of the rotor core (three slots means three windings), and each of its joints is welded to the metal sheet of the commutator.
Brushes are the conductive parts connecting the power supply to the rotor windings, and have both conductive and wear-resistant properties. Permanent magnet motor brushes use unisex metal sheet or metal graphite brush, electrified graphite brush.
Permanent magnet DC motors used in VCRs adopt electronic speed stabilizing circuits or centrifugal speed stabilizing devices.
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