An induction motor or 3 stage induction motor can be an AC electric motor in which the electric current in the rotor needed to generate 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 is a ac engine. The primary drawback of DC motors may be the existence of commutator and brushes, which require frequent maintenance and we can not use DC engine in explosive and filthy 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 many starting and braking condition.
Important starting methods are
Auto transformer starter
Ac Three Phase Motor voltage controller starter
Rotor resistance starter
Important braking methods are
Plugging or invert voltage braking
But one thing swiftness control technique of induction motor is important
Stator voltage control
Slip power recovery
Rotor resistance control