Electric Motor (Asynchronous)

The two main parts of an induction motor are the stator and the rotor. Brass coils are placed in the stator and are separated from each other by ducts of ferromagnetic material. Plastic elements electrically isolate the wires to avoid short circuits. Inside the rotor, horizontal lines are visible, created by the squirrel cage, and foil layers make vertical lines. The bearings hold the crankshaft and the end shields, allowing the rotor to stay at the center stator winding and rotate with minimal friction.
A rotating magnetic field is created around the stator by an AC supply. The relative speed between the stator’s magnetic field and the rotor’s conductors causes an induced electromagnetic field in the rotor conductors. Electricity is induced on the rotor because of electromagnetic induction, not electrical wiring connections. The induced current in the rotor creates an alternating flux around it. The rotor’s flux lags behind the stator’s flux, rotating in the same direction, trying to catch up with the synchronous speed and never reaching it.