What is an Induction Motor?
An induction engine or asynchronous motor can be an AC electric motor in which the electric current in the rotor needed to create torque is obtained by electromagnetic induction from the magnetic field of the stator winding.
Working Basic principle of Induction Motor
We have to give double excitation to create a DC motor to rotate. In the DC motor, we provide one supply to the stator and another to the rotor through brush set up. However in induction motor, we give only one supply, so it is interesting to know how an induction motor works. It is basic, from the name 
itself we are able to understand that here, the induction process is involved. Whenever we supply the supply to the stator winding, a magnetic flux gets produced in the stator due to the flow of current in the coil. The rotor winding is indeed arranged that every coil becomes short-circuited.
The flux from the stator cuts the short-circuited coil in the rotor. As the rotor coils are short-circuited, in accordance to Faraday’s legislation of electromagnetic induction, the existing will start flowing through the coil of the rotor. When the existing through the rotor coils flows, another flux gets generated in the rotor. Now there are two fluxes, one is stator flux, and another is usually rotor flux. The rotor flux will become lagging in respect of the stator flux. Because of that, the rotor will feel a torque which can make the rotor to rotate in direction of the rotating magnetic field. This is the working theory of both one and three phase induction motors.
Types of Induction Motors
The types of induction motors could be classified depending on whether they are a one phase or three phase induction motor.
Single Phase Induction Motor
The types of solitary phase induction motors include:
Split Phase Induction Motor
Capacitor Start Induction Motor
Capacitor Start and Capacitor Run Induction Motor
Shaded Pole Induction Motor
Three Phase Induction Motor
The types of three phase induction motors include:
Squirrel Cage Induction Motor
Slip Ring Induction Motor
We have mentioned previously above that the single-phase induction motor isn’t a ac motor self-starting engine, and that the three-phase induction engine is self-starting. Just what exactly is a self-starting engine?
When the electric motor starts running automatically without any external force applied to the machine, then your motor is known as ‘self-starting’. For instance, we see that when we placed on the change the enthusiast starts to rotate instantly, so it is definitely a self-starting machine. Indicate be noted that fan used in home devices is a single phase induction engine which is definitely inherently not self-starting. How? Will a question arise as to how it works? We will discuss it now.
