The stator is an unmoving component of an electrical machine that’s going around the rotor. It’s derived from the word ‘’stationary’’ as the ‘’stator’’ implies. It contains the windings and provides mechanical support and protection for the motor.
The stator of an induction machine
The rotor is a general term for the main spinning part of an electrical machine and derived from the word ‘’rotating’’. Sometimes ‘’shaft’’ and ‘’armature’’ are alternatively used too. It’s the part of the machine on which electromechanical energy conversion occurs.
The rotor of a squirrel cage induction machine
Source: https://www.quora.com/What-are-the-functions-of-a-rotor-and-stator
Stator VS Rotor
| Basis for Comparison | Stator | Rotor |
|---|---|---|
| Definition | It is a stationary part of the machine | It is the rotating part of the motor. |
| Parts | Outer frame, the stator core, and a stator winding. | Rotor winding and Rotor core |
| Supply | Three-phase Supply | DC supply |
| Winding Arrangement | Complex | Easy |
| Insulation | Heavy | Less |
| Friction Loss | High | Low |
| Cooling | Easy | Difficult |
Read More: Difference between Series and Parallel Circuits