What’s an ac motor induction Motor?
An induction electric motor or asynchronous motor can be an AC electric electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding.
Working Theory of Induction Motor
We have to give dual excitation to create a DC engine to rotate. In the DC motor, we give one supply to the stator and another to the rotor through brush set up. However in induction engine, we give only one supply, so that it is interesting to learn how an induction engine 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 because of the movement of current in the coil. The rotor winding is so arranged that all 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 current through the rotor coils flows, another flux gets produced in the rotor. Now there are two fluxes, one is usually stator flux, and another is certainly 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 direction of the rotating magnetic field. This is actually the working theory of both solitary and three stage 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 single 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 over that the single-phase induction motor is not a self-starting motor, and that the three-phase induction electric motor is self-starting. So what is a self-starting electric motor?
When the motor starts running automatically with no external force applied to the machine, then the motor is known as ‘self-starting’. For example, we see that whenever we placed on the change the enthusiast starts to rotate immediately, so it can be a self-starting machine. Point to be noted that lover used in home appliances is an individual phase induction engine which can be inherently not really self-starting. How? Really does a question arise concerning how it works? We will discuss it at this point.