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How do you minimize core losses?
Hysteresis and eddy current loss constitute core loss. It can be reduced by replacing solid core by laminated core... by adeeb
Why laminations are used for iron parts of a dc machine?
Laminations minimize eddy currents, or current flow across the iron parts. This is one method to minimze stray losses.
What is eddi current?
An 'eddy' (not 'eddi'!) current is a current that flows in the magnetic circuit (core) of an electrical machine, due to a voltage induced into that core by a changing magnetic field. Eddy currents cause energy losses in electrical machines. To minimise eddy currents and, therefore, their losses, machines use laminated cores which restrict the paths through which eddy currents can flow.
What causes eddy current?
In magnetism:An eddy current is induced into a metal when magnetic lines of force move across it. A South pole causes circulating current in clockwise direction while a North pole causes current in counter-clockwise direction. These eddy currents thus buck the applied forces. Eddy currents are undesirable when induced into transformer cores causing power loss. Lamination of core material reduces current flow in the core. Current induced into the secondary winding of a transformer is a used to step-up or step-down voltages so that they can be of a correct size for end-use applications.When time-varying magnetic field is applied to electrical machines like transformers, a time-varying emf is induced in the transformer cores. A short circuit occurs at the molecular level in the core. Due to less resistance, a large current begins to flow in the core. This causes heating in the core. Actually the path of the current is circular resembling the circular waves in a pool of water (eddy). Hence these currents are called eddy currents.In fluids:In water flow, an eddy is a current that flows opposite the normal flow. If on a river, an eddy is a current that will flow upstream in a side channel filling it, even if the flow is in an opposite direction of the original flow. It is equivalent to a stream's water level rising because the river it feeds has more water in it than the stream, thus making the water flow upstream. It can also be an area that seems not to have a current at all.A:Just like there exists a magnetic path due to current (charge) flow in a conductor (direction given by right hand rule), the thing works other way as well...When there is a flux path crossing a current conducting material, there exists current paths around the flux line on the conductor plane centered to the point where flux line meets the plane. These currents are eddy currents.Commonly available in magnetic circuits. Laminations are done to minimize the ability to flow eddy currents.
Does a laminated iron core increase eddy current losses?
No, the purpose of laminating the core is to reduceeddy-current losses.
How do you minimize core losses?
Hysteresis and eddy current loss constitute core loss. It can be reduced by replacing solid core by laminated core... by adeeb
What are the advantages of shell type transformers?
this type of transformer used special low loss steel to minimize eddy current losses and reduced leakage flux.
Why laminations are used for iron parts of a dc machine?
Laminations minimize eddy currents, or current flow across the iron parts. This is one method to minimze stray losses.
When was Eddy Current Suppression Ring created?
Eddy Current Suppression Ring was created in 2003.
Eddy current in transformer?
Yes, a transformer has eddy currents.
What is a metallic substance used in eddy current?
Alimunium is the best Element, that can be used for the production of eddy current.
Why are stator cores laminated?
Thin metal laminations are used to minimize the magnetic flux eddy current loss in the stator cores of high-speed, high-performance induction motors.
What is a current of air?
An eddy.
Why the name eddy for eddy current?
That's from an analogy from eddy currents in water. Quoting from the Wikipedia, article "Eddy (fluid dynamics": "In fluid dynamics, an eddy is the swirling of a fluid and the reverse current created when the fluid flows past an obstacle."
Why eddy current damping is not used in moving iron instruments?
because eddy current is produced by the heat produced in winding
What is a four letter word for circular current that starts with e?
eddy
What is a current of air called?
An eddy.
