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4.
FUNCTION OF EACH COMPONENT
4-l GENERATOR
4-l-l STATOR
The stator consists of a laminated silicon steel
sheet core, and a copper coil wound around the
core with a lead wire from which AC and DC
output are taken out.
The copper wire coil
consists of a main coil and a DC coil, and AC
output is taken out from the main coil, while
DC output is taken out from the DC coil.
4-l-2 ROTOR
The rotor consists of a laminated silicon steel
sheet core, a field coil which is wound around
the core, and a cooling fan mounted on one
end of the shaft, with a slip ring on the
opposite end. One end of the lead wire from
the field coil is connected to the slip ring.
The field coil becomes an electromagnet when
DC current flows from the slip ring. The
cooling fan is for cooling the generator by
inducting cooling air from the slip ring side
and discharging it from the fan side.
4-l-3 BRUSH
Exciting current from the AVR is supplied
through this bush to the rotor. The brush is
made of carbon, while the brush holder is
made of plastic. In order to run the generator
efficiently without failures, it is necessary to
maintain the contact voltage between the
brush and the slip ring within a range, which
needs management of the brush length.
Fan
F& 4-l-2
Fig. 4-l-3
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