The stator is mounted between two end brackets. It consists of a cylindrical, laminated iron core, which carries the 3-phase windings in slots on the inside.
The windings are insulated from each other and also from the iron core. They form a large number of conductor loops which are each subjected to the rotating magnetic field.
Overview
The stator is the fixed part of a rotating machine. The rotating part of the machine, or rotor normally rotates inside the stator. Examples of such machines are pumps and motors.
The stator provides the external magnetic field and remains stationary while it surrounds the armature and contributes to the torque. In simple DC motors the stator is made with permanent magnets. Electromagnets are more commonly used and have many advantages. By reversing the current through the electromagnet, its polarity will be reversed, thus reversing the direction of the motor’s rotation. The strength can also be changed, which changes the speed of the coil rotation. It can also be turned on or off meaning that it does not always remain magnetized. Most stators are given a curved shape. This makes the magnetic field curved and increases the time when the armature is parallel to the magnetic field, giving it maximum torque.
Source: CDX Global & Wikipedia
