AC Generators
AC GENERATOR COMPONENTS
AC GENERATOR COMPONENTS
AC generators are widely used to produce AC voltage. To understand how these
generators operate, the function of each component of the generator must first be
understood.
EO 1.1
STATE the purpose of the following components of an
AC generator:
a.
Field
b.
Armature
c.
Prime mover
d.
Rotor
e.
Stator
f.
Slip rings
Field
The field in an AC generator consists of coils of conductors within the generator that receive a
voltage from a source (called excitation) and produce a magnetic flux. The magnetic flux in the
field cuts the armature to produce a voltage. This voltage is ultimately the output voltage of the
AC generator.
Armature
The armature is the part of an AC generator in which voltage is produced. This component
consists of many coils of wire that are large enough to carry the full-load current of the
generator.
Prime Mover
The prime mover is the component that is used to drive the AC generator. The prime mover may
be any type of rotating machine, such as a diesel engine, a steam turbine, or a motor.
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