AC Motor Construction

In an AC motor, there are two essential parts like stator (stationary part) and rotor (rotating part). Apart from these, there are some other parts which are discussed below.

 

Stator

The stator in the ac motor is an inactive part and the main function of this is to transmit a rotary magnetic field for interacting through the rotor.

 

Stator Core

The stator core in the motor is designed with laminations or thin metal sheets which are mainly used to decrease energy loss.

 

Stator Windings

Stator windings in the motor will load together to form a hollow cylinder. The stator core coils slots for the insulated wires are protected. Once the ac motor which is assembled is in process, the connection of stator windings can be done toward a power source. Every coils group with the steel core will turn into an electromagnet once the current supply is provided.

 

Rotor

The rotating part in the motor is the rotor and it is an essential part that is connected to the shaft. In an AC motor, the most common type of rotor used is the squirrel cage rotor. It is a cylindrical shape that is made through stacking slight steel laminations.

 

Shaft

The rotor assembly can be formed by pressing onto a steel shaft which expands outside of the motor casing to let the connection to an outside system broadcast the rotating power.

 

Bearings

Bearings are placed on the shaft of the motor to give support to the rotor & allow rotating. Some types of motors utilize a fan by placing it on the shaft of the rotor to cool down the motor once the shaft is revolving.

In the ac motor, bearings are used to hold the shaft within the place. Here, bearings will reduce the friction of the shaft that is connected toward the casing so that motor efficiency can be enhanced.

 

Enclosure

The enclosure in the motor includes a yoke or frame & two end brackets. The stator is located within the frame and the rotor is arranged within the stator through a small air gap that separates it from the stator. There is no straight physical link between the rotor & the stator.

The enclosure within the motor guards the inside parts against ecological elements & water. This part includes two end brackets as well as a frame.