Hello, friends, I hope you all are doing great. In today’s tutorial, we will discuss the Difference Between Stator & Rotor. There are two main types of electrical machines first one is AC machines such as ac generators and ac motors. These are further divided into other types such as induction motor, single-phase induction motor, three-phase induction motor, synchronous motor, and introduction to synchronous generator, induction generator. The second type is the dc motor and generator. All these machines either ac or dc have main two parts which are the stator and rotor. The basic difference between them is that stator is a static part and the rotor is a rotatory part of these machines.
The subparts of a stator are the core of the stator, the frame of a stator, and the windings of the stator. The stator frame provides support to the core and protects the winding wounded from the external environment. In the core of the stator rotating magnetic field flows that is generated due to input 3 phase supply. The rotor of the machine is placed in the core of the stator. There are commonly used types of rotor squirrel cage and wound rotor. The supply given at the stator induces a magnetic field in the stator which likes with the core of the rotor to generate emf in the rotor. In today’s post, we will have a detailed look at both the rotor and stator and find their differences. So let’s get started with the Difference Between Stator & Rotor.
Difference Between Stator & Rotor
- The static part of electric machines is called the stator in this part field winding is wound and the input supply is given in the case of the motor.
- There are 3 main parts of the stator which are the outer frame, stator core, and stator winding.
- At stator, large insulation is needed than the rotor.
- The amount of frictional losses at the stator is large.
- The cooling process of the stator is easy.
- Energy transmits from the stator and comes to the stator to the rotating part of the machine which is the rotor.
- In the case of motors rotating magnetic field is produced at the stator that is given to the rotor windings and emf induced at motor work.
- While in the generator stator is used to conversion of the field to the current
- At the stator, ac supply is given.
- The winding wound on the stator is more complicated than the rotor windings.
- Stator covers the inner part of machines and also saves from damage
- The stator can be permanent magnets or electromagnet
- In electromagnetic field coils are used to make an electromagnet
- The rotatory portion of an electric machine is called the rotor.
- There are 2 main parts of the rotor first in the winding of the rotor and the second one is the core of the rotor.
- The dc supply is given at the stator.
- There are different types of rotor like squirrel cages rotor, wound rotor salient pole rotor
- The configuration of windings at the rotor is easy than the stator.
- At the rotor, less insulation is needed.
- The cooling process of the rotor is difficult as compared to the stator.
- In the case of 3-phase induction, motor ac is given to the stator and flux induces in the rotor.
- Due to flux field is generated and current passing the rotor.
- The squirrel cage rotor speed is less than the speed of the field at the stator.
- wound rotor has a constant value off speed and operates at less current
Stator vs Rotor
|It is a Stationary element of electric motors||it is a rotating part of electric motors|
|it is surrounded by the rotor||it lies in the stator|
|It is created with wire coils wound around a magnetic core||it is created of a magnetic core and wire coils|
|its primary function is to produce a magnetic field||its main function is to interact with the stator’s magnetic field|
|it produces the torque that causes motor rotation||it produces a torque that drives the motor’s rotation|
|it not rotates||It rotates in the stator|
|it is generally created with a magnetic core and wire coils||it is created with a magnetic core and wire coils (windings)|
|it has a fixed number of wire coils||it has a differnt number of wire coils|
|It produces a magnetic field that interacts with the rotor||It interacts with the magnetic field of the stator to produce torque|
|It does not have any loveable parts||it has moveable parts which rotate in the stator|
|it does not need brushes or a commutator||it needs brushes or a commutator for power transmission to the windings|
|Its size is later than the rotor||its size is smaller than the stator|
|it has a larger cross-sectional area than a rotor||it has small cross-sectional areas than the stator|
|it is normally created with ferromagnetic materials||it is made with ferromagnetic materials|
|it is less prone to wear and tear than a rotor||it has a high chance to wear and tear compared to the stator|
|it produces less heat than the rotor||it produces a larger heart than the stator|
|it can have a cooling system for heat dissipation||May have a cooling system to dissipate heat|
|May have a protective casing to prevent damage from external factors||it can not have a protective casing|
|it exists on the outer side of the motor||it lies in the inner part of the motor|
|it is more costly to manufacture than a rotor||It is less costly to manufacture than the stator|
|Write the main function of the stator.||The stator’s main job is to produce a magnetic field that interacts with the rotor to produce torque and propel the spinning of the motor.|
|How does the rotor interact with the stator?||To produce torque and propel the motor’s spinning, the rotor interacts with the magnetic field of the stator.|
|Which material was used to make the stator and rotor?||Ferromagnetic materials like iron or steel are commonly used to construct both the stator and the rotor.|
|Do the stator and rotor produce the same amount of heat?||No, due to its immobile nature and bigger cross-sectional area, the stator produces less heat than the rotor.|
|Stator or rotor which one is more prone to wear and tear?||Due to its moving elements and lower cross-sectional area than the stator, the rotor is more vulnerable to wear and tear.|
That is all about the difference between the rotor and stator, if you have any queries, ask in the comments. I tried my level best to make simple this post for you. I hope you enjoyed this tutorial. Have a good day. see you in the next post.