The
main objective of this paper is to study the basic electrical machine types and
their applications. A DC machine can operate as a generator or motor.
Generators and motors are the rotating machines. Based on the mode of
operation, the mechanical power is converted in to electrical power and
electrical power is converted in to mechanical power. A DC machine works on thebasis of three modes of operation namely: Generating mode, Motoring mode andBraking mode. In first mode of operation, prime mover with mechanical power is
converted in to electrical power. In the second mode of operation, the
electrical power is converted in to mechanical power and this mechanical power
is used to drive the mechanical load.
In the third mode of operation, a machine
can operate as a generator and electrical power is pumped back to the system
for applying regenerative braking.An
electrical generator is a mechanism which converts mechanical energy into
electrical energy. The energy conversion is based on the principle of
electromagnetic induction. According to faraday’s law of electromagnetic
induction, whenever current carrying conductor is placed in a magnetic field,
it will cut the flux lines thereby leading to create a force and generator
tends to rotate.(Read more)
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