What is the stator core?
The stator core is built up of thin punched laminations of electrical grade steel, which are commonly called “punchings.” They are segmented, meaning that 12 to 24 punchings are laid side-by-side to form a complete 360° ring, comprising one layer.
What is the purpose of laminating the stator core and the rotor core?
During the process of induction heating, the bearing heats up quite quickly while the cross bar stays relatively cool. Simply stated a stator core is laminated and insulated in order to reduce induced circulating currents and associated heat down to a manageable level.
Where is the stator core located?
The stator then is the stationary part of the AC motor. The rotor is the rotating electrical component. It also consists of a group of electro-magnets arranged around a cylinder, with the poles facing toward the stator poles. The rotor is located inside the stator and is mounted on the AC motor’s shaft.
What is the main function of a stator?
In an electric motor, the stator provides a magnetic field that drives the rotating armature; in a generator, the stator converts the rotating magnetic field to electric current. In fluid powered devices, the stator guides the flow of fluid to or from the rotating part of the system.
Why laminated core is used in induction motor?
Lamination is necessary since a voltage is induced along the axial length of the steel as well as in the stator conductors. The laminations are insulated from each other usually by a varnish layer. This breaks up the conducting path in the steel and limits the losses (known as eddy current losses) in the steel.
What is the lamination used for stator?
2. What is the lamination used for the stator? Explanation: The stator is made up of a block of laminations. The block of laminations are made up of cast iron or die cast aluminium alloy frame.
Why does the stator core of induction motor laminated Mcq?
5. The stator core of a 3-phase induction motor is laminated in order to reduce the. (a) eddy current loss.
Why stamping is used in stator core?
The added silicon makes the steel more effective and faster at building and maintaining magnetic fields. This means that silicon steel improves the efficiency of any device using steel as a magnetic core material. Metal stamping is one procedure used to create motor laminations for different applications.
How do I know if my stator is working?
Insert each probe into a stator socket. You should read around 0.2 to 0.5 ohms. If you show an open circuit with the “Open” or infinity reading or have higher resistance, then the stator is bad and you must replace it. If these tests all produce positive results, then the stator itself is good.
Why stator is used in DC motor?
In a DC motor, the stator provides a rotating magnetic field that drives the armature to rotate. … These key operating principles of DC motors allow them to convert the electrical energy from direct current into mechanical energy through the rotating movement, which can then be used for the propulsion of objects.