What is an Induction Motor?
An induction motor or asynchronous motor is an AC electric ac motor engine in which the electric energy in the rotor had a need to create torque is obtained by electromagnetic induction from the magnetic field of the stator winding.
Working Principle of Induction Motor
We need to give dual excitation to make a DC motor to rotate. In the DC engine, we provide one supply to the stator and another to the rotor through brush arrangement. But in induction motor, we give only 1 supply, so it is interesting to learn how an induction electric motor works. It is simple, from the name itself we are able to understand that here, the induction process is involved. When 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 moving through the coil of the rotor. When the existing through the rotor coils flows, another flux gets produced in the rotor. Now there are two fluxes, one is definitely stator flux, and another is certainly rotor flux. The rotor flux will become lagging according of the stator flux. Because of that, the rotor will feel a torque which will make the rotor to rotate in direction of the rotating magnetic field. This is actually the working theory of both one and three stage induction motors.
Types of Induction Motors
The types of induction motors can be classified depending on if they are a solitary phase or three phase induction engine.
Single Phase Induction Motor
The types of solitary 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 motor, and that the three-phase induction motor is self-starting. Just what exactly is a self-starting engine?
When the engine starts running automatically without any external force put on 
the machine, then the motor is referred to as ‘self-starting’. For instance, we see that when we put on the change the lover starts to rotate instantly, so it can be a self-starting machine. Indicate be noted that lover used in home home appliances is a single phase induction motor which can be inherently not really self-starting. How? Does a question arise concerning how it operates? We will discuss it today.