An induction motor or 3 phase induction motor is an AC electric engine in which the electric current in the rotor needed to create torque is obtained by electromagnetic induction from the magnetic field of the Three Phase Motor stator winding
An induction motor which connects with a 3-phase supply called 3-phase induction motor. Example enthusiasts,blowers, cranes,traction .It is a ac electric motor. The primary drawback of DC motors is the presence of commutator and 
brushes, which require regular maintenance and we can’t use DC motor in explosive and dirty environment. But induction motors are cheaper,tough,lighter,smaller,require less maintenance and may use in dirty and explosive environment. Slip s may be the imp aspect in this type of motor.
There are 2 types of IM.
Squirrel cage IM
Slip ring IM
There are numerous 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 invert voltage braking
Dynamic braking
But one thing acceleration control technique of induction motor is important
Pole changing
Stator voltage control
V/f control
Slip power recovery
Rotor resistance control