Difference Between Stator and Rotor | Electrical Engineering Fact

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


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