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 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-stage induction motor. Example enthusiasts,blowers, cranes,traction .It really is a ac motor. The main drawback of DC motors is the presence of commutator and brushes, which require frequent Three Phase Motor maintenance and we can’t use DC electric motor in explosive and dirty environment. But induction motors are cheaper,tough,lighter,smaller,require much less maintenance and will use in dirty and explosive environment. Slip s is the imp factor 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 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