The earliest ac motor according to the principle of electromagnetic induction design, structure is more simple than dc motor, at the same time than can only be used in the electric vehicle dc motor USES more widely, with the invention of the motor really entered the field of household appliances. After the advent of ac motor, synchronous motor, series motor, ac motor commutator also gradually invented by people, micro gear motor and in the actual production, for the life of people more convenient. The invention and application of electric motor is of great significance for human, it has brought great changes for human life.
Motor according to the working power supply varieties division: can be divided into dc motor and ac motor.
Dc motor can be divided according to the structure and working principle: brushless dc motor and brushless dc motor.
A brush dc motor can be divided into: permanent Small Geared Motors magnet dc motor and the electromagnetic dc motor.
Electromagnetic dc motor division: the series wound dc motor, shunt dc motor, and compound dc motor separately excited dc motor.
Permanent magnet dc motor division: rare earth permanent magnet dc motor, ferrite permanent magnet dc motor and aluminum nickel and cobalt permanent magnet dc motor. The ac motor can also be points: synchronous motor and induction motor.
Synchronous motor can be divided into: permanent magnet synchronous motor, synchronous motor and magnetic resistance hysteresis synchronous motor.
Induction motor can be divided into: ac induction Small Dc Gear Motor motor and motor commutator. Induction motor can be divided into:
Three-phase asynchronous motor, single-phase asynchronous motor and cover pole asynchronous motor, etc.
Ac commutator motor can be divided into: single-phase series motor, ac/dc motor and repulsion motor.
Three-phase asynchronous motor consists of stator and rotor of two parts. Stator is mainly composed of stator core, stator windings and the frame parts, such as its function is used to produce a rotating magnetic field. Rotor by the rotor core, rotor winding and the rotor parts, such as the effect of the rotor is used to generate electromagnetic torque.
Cage type asynchronous motor rotor core, adopts chute structure, with a 0.5 mm thick silicon steel sheet of the overlying. Divided into cage rotor winding according to the structure and type two kinds. Medium and small squirrel-cage rotor asynchronous motor, using cast aluminum rotor.
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