Last Updated on November 28, 2022 by
Introduction
The stator and rotor are the two components of the electric motor. There is a significant difference between the rotor and the stator, since the rotor is the rotating part of the motor, and the stator is the stationary part. This guide is all about stator rotor with a clear difference.
What is a stator rotor?
Stators are static parts of motors. Motors generate rotating electromagnetic fields through stators. Stator cores, stator windings, and stator frames are the three elements that make up a stator. By supporting, protecting, and protecting the winding of the stator, the stator core does the same. Using high-quality machines, silicon steel is pressed into the core of the stator.
It is the rotor that rotates the motor. Two parts make up a rotor: the rotor core and the rotor winding. It is the DC supply that energizes the windings of the rotor. Squirrel cage rotors and phase wound rotors are the two types of rotors.
Its cylindrical iron core makes up the majority of the squirrel cage rotor. Cores are covered by copper or aluminum conductors inserted into a semicircular slot on their outer surface. Using aluminum or copper rings, the conductors are short-circuited at their ends.
How does the stator rotor work?
In order to generate a rotating magnetic field, three phases of energy are supplied to the stator. Because of the electromagnetic induction phenomenon, when the rotor is at rest, the electromagnetic force will induce in them.
Read more:What Is Automatic Power Factor Controller? Its Types, Working, And Uses
In electromagnetic induction, the induced electromagnetic field induces the current in the conducting conductor because of the variable magnetic field. By causing a current to be induced in the rotor, the current causes movement.
Difference between stator and rotor
In comparing stator and rotor performance, various factors may be considered. These include movement, parts, insulation, supply, winding arrangement, friction loss, etc. There can be significant differences between stator and rotor based on these parameters. Before we fully understand the difference between stators and rotors, let’s take a moment to familiarize ourselves with stators and rotors.
We will now discuss the differences between rotors and stators through the parameters that separate them.
· The movement
As far as their motion is concerned, the stator and rotor differ clearly. The rotor rotates within the motor and is compared to the rotating part, whereas the stator and other parts of the motor are motionless.
· Insulate the motor
The insulation should also be considered to determine the difference between rotor and stator in this comparison. The stator is heavily insulated. In contrast, there is little insulation on the rotor.
· Loss of friction
The friction loss parameter is also different between the stator and the rotor. As a result of the part’s structure, friction loss varies. Stators, for example, have high friction losses. It has a low friction loss, while the rotors have a high friction loss.
· Components
In addition, there is a difference between their parts. As well as the core, the stator also has a frame that supports its windings. Inside the stator’s frame is a winding consisting of three phases. It is the core that carries the stator’s magnetic field in rotation. One crucial fact to remember about the rotor here: it’s housed inside the stator’s core! As well as windings and cores, the rotor contains other components.
· Arrangement of the windings
Rotor winding arrangements differ from stator winding arrangements because a stator’s windings are more complicated. Alternatively, rotors can be arranged easily.
· The cooling process
A second difference between the stator and rotor is how they cool the motor. Stator cooling is superior considering stator’s fixed position and rotor’s movement.
· Availability
DC power is provided to the rotor. Three-phase power is supplied to the stator, on the other hand. In addition to accommodating a higher load, a three-phase supply is more reliable.
· Dimensions
It is necessary to have a large stator winding size because it carries a large current. Stator windings are more significant than field windings, but not as much.
Conclusion
The rotating component of a machine is called a rotor. The entire linear, synchronously revolving portion of an electrical motor or generator is called the rotor. The rotor is a machine’s stationery, non-moving equivalent.
