Specifications
2
Caution
Hazards or unsafe practices that could
cause product damage.
Note
Significant points of interest
3. Identification
Each BWC XL.1-24 wind turbine has a serial
number decal located on the tower mount. The
Serial Number is also written on the box that the
turbine came in. We recommend writing it here as
well
BWC XL.1-24 Serial No.:
4. System Description
XL.1 Wind Turbine Components
The major components of the XL.1 wind turbine
are shown in Figure 2.
A. Blades / Rotor System
The rotor system consists of three fiberglass
blades. Acting like aircraft wings, the blades con-
vert the energy of the wind into rotational forces
that can drive a generator. The airfoil on the XL.1
is the new SH3045 developed specifically for the
XL.1 by Bergey Windpower. The fiberglass
blades are exceptionally strong because they are
densely packed with glass reinforcing fibers that
run the full length of the blade. The rotor has three
blades because three blades will run much
smoother than rotors with two blades.
Blades
Tail Boom
Tail Fin
Powerhead
Alternator
Tower
Mount
Spinner
Figure 2, Major Components of the XL.1 Wind Turbine
Nacelle
B. Alternator
The alternator converts the rotational energy of
the rotor into electricity. The alternator utilizes
permanent magnets and has an inverted configu-
ration in that the outside housing (magnet can)
rotates, while the internal windings and central
shaft are stationary. The alternator was specially
designed for the XL.1 and produces power at low
speeds, eliminating the need for a speed-
increasing gearbox.
The output from the alternator is three-phase al-
ternating current (AC), but it is rectified to direct
current inside the nacelle. Since it uses perma-
nent magnets, the alternator is generating voltage
whenever the rotor is turning.
Warning
The output wiring of the BWC XL.1-
24 presents a low voltage shock ha-
zard whenever the rotor is turning.
Caution must be exercised at all
times to avoid electrical shock.
C. Nacelle
The nacelle is the fiberglass housing around the
main body of the machine. It contains the main
structural “backbone” of the turbine (called the
mainframe), the rectifier, the slip-ring assembly,
the yaw bearings, and the tower mount. The yaw