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