An induction engine or 3 phase induction motor can be an AC electric motor in which the electric energy in the rotor needed to generate torque is obtained by electromagnetic induction from the magnetic field of the stator winding
An induction motor which connects with a 3-phase supply called 3-phase induction motor. Example fans,blowers, cranes,traction .It really is a ac motor. The primary drawback of DC motors may be the presence of commutator and brushes, which require frequent maintenance and we can not use DC engine in explosive and dirty environment. But induction motors are cheaper,durable,lighter,smaller,require much less maintenance and may use in dirty and explosive environment. Slip s may be the imp element in this kind of motor.
There are 2 types of IM.
Squirrel cage IM
Slip ring IM
There are various starting and braking condition.
Important starting methods are
Star-delta Three Phase Motor starter
Auto transformer starter
Ac voltage controller starter
Rotor resistance starter
Important braking methods are
Plugging or reverse voltage braking
But one thing quickness control technique of induction motor is important
Stator voltage control
Slip power recovery
Rotor resistance control