Eddy Current
Eddy currents are the loops of electric current which is
produced in the conductor by changing the magnetic field in the conductor. Eddy
current is also called foucault current. In closed loops, eddy current flows in it. Eddy current is induced due to another conductor which is placed
near to the conductor in which magnetic flux is produced by an AC
electromagnet. These conductors can be in coil shapes and a transformer.
Lenz’s law
According to the lenz’s law eddy current creates a magnetic
field in a conductor that opposes the change in the magnetic field which is created
in it and then eddy current reacts back on the source of the magnetic field. In
alternating current eddy current is a name of energy loss in a conductor. This
is because of the resistance of the conductor in the way of electric current. To reduce
the energy loss of eddy current requires the usage of laminated cores.Explanation OF Eddy Current
In AC Circuits, Eddy current produces in a conductor. When a conductor produce resistance in the way of current, a minor amount
of current produces which starts flowing to the opposite direction of the
current and a large amount of resistance is produced. This resistance is
because of the resistance of the conductor. Eddy current is produced in
electrical circuits which are used in AC circuits such as inductors, transformers,
electric motors, generators and other AC machinery.
Skin Effect
Alternating current also cause losses in the conductors in
the field of transmission and distribution lines. This is because of the alternating
current changes its direction and its quantity continuously with respect to time. In transmission and distribution of electric power, the current flows
through the edges of the conductor and cannot flows properly in the whole
conductor. This current produces an eddy current due to the resistance of the
edges of the conductor and can cause high resistance in the conductor.
