What’s an Induction Motor?
An induction electric motor or asynchronous motor can be an AC electric motor in which the electric current in the rotor needed to generate torque is obtained by electromagnetic induction from the magnetic field of the ac motè stator winding.
Working Principle of Induction Motor
We need to give dual excitation to make a DC motor to rotate. In the DC electric motor, we provide one supply to the stator and another to the rotor through brush set up. However in induction electric motor, we give only 1 supply, so that it is interesting to know how an induction engine works. It is simple, from the name itself we can understand that here, the induction procedure is involved. Whenever we supply the supply to the stator winding, a magnetic flux gets stated in the stator due to the circulation 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 current 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 can be rotor flux. The rotor flux will become 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 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 solitary phase or three phase induction electric motor.
Motè Endikasyon Single Faz
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 over that the single-phase induction motor is not a self-starting motor, and that the three-phase induction motor is self-starting. Just what exactly is a self-starting electric motor?
When the motor starts running automatically without any external force applied to the machine, then your motor is known as ‘self-starting’. For example, we see that when we placed on the switch the fan starts to rotate instantly, so it is usually a self-starting machine. Indicate be noted that fan used in home appliances is a single phase induction motor which is definitely inherently not really self-starting. How? Really does a question arise as to how it operates? We will discuss it today.