Скачать или смотреть Brushless Alternator

In all alternators, voltage may be generated by rotating a
coil in the magnetic field or by rotating a magnetic field
within a stationary coil wire. To produce voltmeter either
the coil is moving or the magnetic field is moving. Either
configuration works equally well and both are used
separately or in combination depending on mechanical,
electrical and other objectives.
In the case of brushless alternator both combination is
used together in one machine.
The stationary part of an alternator is called the stator
and the roating part is called the rotor. The coils of wire
used to produce a magnetic field are called the field
winding and the coils that the power are called the
armature winding. Here both armature and field winding
used as rotor as well as stator.