What’s an Induction Motor?
An induction engine or asynchronous motor can be an AC electric motor in which the electric current in the rotor had a need to generate torque is obtained by electromagnetic induction from the magnetic field of the stator winding.
ac motor Working Basic principle of Induction Motor
We need to give double excitation to make a DC motor to rotate. In the DC engine, we give one supply to the stator and another to the rotor through brush set up. But in induction engine, we give only one supply, so that it is interesting to know how an induction motor works. It is simple, from the name itself we can understand that right here, the induction process is involved. Whenever we give the supply to the stator winding, a magnetic flux gets produced in the stator due to the movement of current in the coil. The rotor winding is so arranged that each coil becomes short-circuited.

The flux from the stator cuts the short-circuited coil in the rotor. As the rotor coils are short-circuited, according to Faraday’s legislation of electromagnetic induction, the current will start flowing through the coil of the rotor. When the current through the rotor coils flows, another flux gets produced in the rotor. Now there are two fluxes, one can be stator flux, and another is rotor flux. The rotor flux will be lagging according of the stator flux. Because of that, the rotor will feel a torque which can make the rotor to rotate in the direction of the rotating magnetic field. This is actually the working theory of both single 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 one phase induction motors include:

Split Phase Induction Motor
Capacitor Start Induction Motor
Capacitor Begin and Capacitor Operate 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 already mentioned above that the single-phase induction motor isn’t a self-starting electric motor, and that the three-phase induction motor is self-starting. So what is a self-starting motor?

When the electric motor starts running automatically with no external force applied to the machine, then your motor is referred to as ‘self-starting’. For example, we see that whenever we put on the change the lover starts to rotate instantly, so it can be a self-starting machine. Point to be noted that fan used in home home appliances is an individual phase induction motor which is inherently not self-starting. How? Will a question arise concerning how it works? We will discuss it at this point.