High Efficiency 3 Phase AC Induction Electrical Motor

The three-phase asynchronous motor mainly consists of stator, rotor, and bearing. The stator mainly consists of an iron core, three-phase winding, frame, and end cover. The stator core is generally made of 0.35-0.5mm thick silicon steel sheets with an insulating layer on the surface and laminated. There are evenly distributed slots punched in the inner circle of the core to embed the stator winding. The three-phase winding is composed of three identical windings arranged in a symmetrical array spaced apart by 120 ° in space. Each coil of these windings is embedded in each slot of the stator according to a certain rule. Its function is to apply three-phase alternating current to generate a rotating magnetic field.

The rotor is a rotatable conductor, usually in the shape of a squirrel cage. The stator is the non rotating part of the motor, whose main task is to generate a rotating magnetic field. Rotating magnetic fields are not achieved by mechanical methods. Instead, alternating current is applied to a number of pairs of electromagnets, causing the properties of their magnetic poles to change cyclically, thus equivalent to a rotating magnetic field. This type of motor does not have a brush or collector ring like a DC motor. According to the type of AC power used, there are single-phase motors and three-phase motors. Single-phase motors are used for washing machines, electric fans, and so on; Three-phase motors are used as power equipment in factories.