The three phase induction motor is the most widely popular used electrical motor. Almost 80% of the mechanical power used by industries is provided by three phase induction motors because of its simple and rugged construction, low cost, good operating characteristics, absence of commutator and good speed regulation.
In 3 phase induction motor the power is transferred from
stator coil to rotor winding through induction. Any Induction motors even have
5 main elements specifically.
The rotor may be a rotating a part of induction motor. The
rotor is connected to the mechanical load through the shaft.
The rotor of the 3 part induction motor are any classified
as.
1. Squirrel
cage rotor.
2. Slip ring
rotor or wound rotor or phase wound rotor.
As its name indicates stator coil may be a stationary a part
of induction motor. A stator coil winding is placed within the stator coil of
induction motor and therefore the 3 phase supply is given to that.
In 3 phase induction motor the power is transferred from
stator coil to rotor winding. The rotor is connected to the mechanical load
through the shaft.
In the 3 part induction motor frame is typically product of
cast steel. The stator coil core is pressed directly into the frame. The 2 end
shields housing the bearings are bolted to cast steel.