Diesel generator is the
combination of diesel engine and generator
A shaft of an alternator is driven diesel engine so by using
the diesel operated motor or engine the mechanical input is
given to generator mean the alternator rotor is driven by
using this mechanical energy by using mechanical input the
generator generate the power this is the simple operation of
diesel generator
Diesel generator is working by the
principle of Faradays laws of electromagnetic induction, The
current produced in the alternator is collected by collector
which is connected to the stator
Disel engine is prime mover which
rotates the alternator and alternator generates the
electricity. Further diesel engine works on principle of
carnot cycle, air is compressed in a cylinder, then it is
compressed up to high pressure, disel is injected to this
compressed air
thus combustion takes place, this energy force to move the
piston in the cylindrical passage, piston is further
connected to crank shaft. on the other hand generator works
on principle of electo magnetic induction
Diesel Generator is a set of engine and alternator.
(Which converts mechanical energy in to electrical energy)
here engine is using for rotating the shaft(prim mover or
crank shaft).
Rotation takes place as fallows:
1)The pistons placed in cylinders and these pistons are
connected to Crank shaft through connecting rads
2)By using diesel as a fuel the blasting takes place in
cylinders, this blasting energy can be converted in to
rotation through piston,connecting and crank shaft
3)this rotor speed strength(should be synchronous
speed)depends on firing order of the cylinders (of course on
number of poles on rotor)
4)this shaft is connected to Alternator rotor
5)this rotor contains poles, this rotor will get the D.C
supply from A.V.R through Exciter (RRA: Rotating Rectifier
assembly, it is a converter bridge)
6)So with rotor(poles) rotation the EMF will induce in main
Stator(Faraday's law of electro magnetic effect)
7)A.V.R out put depends on load effect on D.G.
The coupling of Diesel Engine & Alternator is know as DG
set.
Diesel is used as fuel for diesel Enigne which is also
called as Prime moover for the alernator.
when saft coupled priemoover rotate then due to Faraday`s
Electromagnetic induction law the a rotating flux is
generated cause to generate the EMF Electromagnatic Field.
As alternator is synchronous generator it will run on
constant seep otherwise not at all so for controlling of
it`s speed we usses the AVR Automatic Voltage Regulator.
Diesel engine is coupled with Generator (Alternator.)Diesel
engine work as a Prime mover to rotate alternator and
Function of alternator is to covert mechanical energy into
electrical energy.
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