What is an Induction Motor?
An induction electric motor or asynchronous motor is an AC electric motor in which the electric current in the rotor had a need to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding.
Working 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. But in induction ac motor engine, we give only 1 supply, so that it is interesting to learn how an induction electric 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 movement of current in the coil. The rotor winding is so 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 current through the rotor coils flows, another flux gets produced in the rotor. There are two fluxes, one can be stator flux, and another is certainly rotor flux. The rotor flux will end up being lagging in respect of the stator flux. Due to that, the rotor will feel a torque which will make the rotor to rotate in the direction of the rotating magnetic field. This is actually the working basic principle of both solitary and three phase induction motors.
Types of Induction Motors
The types of induction motors can be classified depending on whether they are a single phase or three phase induction engine.
Single Phase Induction Motor
The types of single phase induction motors include:
Split Phase Induction Motor
Capacitor Start Induction Motor
Capacitor Begin 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 over that the single-stage induction motor is not a self-starting motor, and that the three-phase induction motor is self-starting. So what is a self-starting engine?
When the electric motor starts running automatically with no external force applied to the machine, then the motor is referred to as ‘self-starting’. For instance, we see that when we put on the switch the enthusiast starts to rotate automatically, so it is usually a self-starting machine. Point to be noted that enthusiast used in home home appliances is 
an individual phase induction electric motor which is usually inherently not really self-starting. How? Does a question arise as to how it works? We will discuss it today.