Induction motor construction

In summary, the number of turns required for each pole in a single phase motor designed to run at 230v AC is approximately 500. However, if the same motor is designed to run at lower voltages such as 110v AC or 12v AC, the required number of turns per pole will be reduced to approximately 114 and 346 respectively. This is due to the fact that the self induction in the coil is proportional to the square of the number of turns, so by reducing the number of turns, thicker wire can be used to achieve the same power while reducing resistance.
  • #1
shoeb
2
0
I want to known the stator design of an indiction motor. How may turns required for each pole. For exmple if a single phase motors is designed to run at 230v ac, how may turns required in each pole. If the same motor is designed to be run in lower voltage (say 110v ac or 12v ac) what will be the required turns in each pole? Definitely wire required in lower vltage required thicker than higher voltage as the power will be same. Is there any guide to know this?
 
Engineering news on Phys.org
  • #2
shoeb said:
If the same motor is designed to be run in lower voltage (say 110v ac or 12v ac) what will be the required turns in each pole?

It's the current that induces the flux. So constant current → constant flux.

The self induction in the coil is proportional to N2, N = number of turns. Reducing N, you can use wire with bigger cross sectional area, thus the resistance in the wire will be reduced by a factor N2 / N1.

So roughly: Say N230V = 500, N110V will be ≈114.

Edit: Sorry about that: . . . . N110V will be ≈346.
 
Last edited:

What is an Induction Motor?

An induction motor is a type of electric motor that operates using electromagnetic induction. It converts electrical energy into mechanical energy, making it an essential component in many industrial and residential applications.

How is an Induction Motor Constructed?

An induction motor consists of two main parts: a stator and a rotor. The stator is the stationary part of the motor and is made up of a set of windings, usually made of copper or aluminum, that are placed in a specific pattern. The rotor, on the other hand, is the rotating part of the motor and is typically made of a laminated core with conductive bars or rods embedded in it.

What are the Different Types of Induction Motors?

There are two main types of induction motors: single-phase and three-phase. Single-phase induction motors are commonly used in household appliances, while three-phase induction motors are used in industrial applications due to their higher power and efficiency.

What Materials are Used in Induction Motor Construction?

The stator windings of an induction motor are typically made of copper or aluminum due to their high conductivity and low resistance. The rotor core is often made of laminated steel sheets to reduce eddy current losses. The conductive bars or rods in the rotor can be made of copper, aluminum, or other conductive materials.

How Does an Induction Motor Work?

When an alternating current is supplied to the stator windings, it creates a rotating magnetic field. This magnetic field induces currents in the conductive bars of the rotor, which in turn, create their own magnetic field. The interaction between the stator and rotor magnetic fields causes the rotor to rotate, thus producing mechanical energy.

Similar threads

Replies
2
Views
362
  • Electrical Engineering
Replies
18
Views
2K
  • Electrical Engineering
Replies
4
Views
978
Replies
28
Views
1K
  • Electrical Engineering
Replies
9
Views
560
Replies
4
Views
899
  • Electrical Engineering
Replies
1
Views
612
  • Electrical Engineering
Replies
4
Views
3K
  • Electrical Engineering
Replies
2
Views
2K
  • Electrical Engineering
Replies
7
Views
1K
Back
Top