An induction engine or 3 stage induction motor can be an AC electric electric motor in which the electric current in the rotor needed to produce 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-stage induction motor. Example enthusiasts,blowers, cranes,traction .It really is a ac motor. The main drawback of DC motors is the existence of commutator and brushes, which require frequent maintenance and we can’t use DC engine in explosive and 
filthy environment. But induction motors are cheaper,durable,lighter,smaller,require less maintenance and will use in dirty and explosive environment. Slip s may be the imp element in this type 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 Three Phase Motor controller starter
Rotor resistance starter
Important braking methods are
Regenerative braking
Plugging or invert voltage braking
Dynamic braking
But one thing rate control technique of induction electric motor is important
Pole changing
Stator voltage control
V/f control
Slip power recovery
Rotor resistance control