Superwind 350 12V Manual Download

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V 01-2017

www.superwind.com

4.2 Technical

data

nominal power...................................350 W
nominal wind speed ..........................12,5 m/s
cut in wind speed ..............................3,5 m/s
cut off wind speed .............................none
rotor diameter....................................1,20 m
number of blades ..............................3
blade material ...................................carbon fibre reinforced plastics
rotor speed........................................500 – 1300 rpm
generator ..........................................permanent magnet 3-phase with rectifier
magnets

Neodymium

nominal voltage.................................12 V DC or 24 V DC
speed regulation ...............................rotor blade pitch
power regulation ...............................rotor blade pitch
brake .................................................dynamic, short circuit
weight................................................11,5 kg
rotor thrust (operation) ......................70 N (15.7 lbf)
rotor thrust (extreme wind speed).....220 N (49.5 lbf)

4.3

Functional description / Special features

The

Superwind

, like all wind turbines, uses part of the kinetic energy of the wind

and converts it into electricity.

The power is approximately proportional to the cube of the wind speed - i.e.
doubling the wind speed results in eight times higher power output. Therefore,
power from the wind at low wind speeds produces very little energy. However, as
the wind speed increases exponentially, high pressure suddenly impacts the
turbine and all of its mechanical components. During high wind events,
conventional wind turbine technology resulted in the turbine going into an “over-
speed” condition, damaging both internal electrical components as well as the
blades themselves.

To design the

Superwind,

special technologies were developed in order to

achieve optimum power output for a wide wind speed range, as well as maintain
maximum safety in high wind or storm conditions. The following technology has
been incorporated into the Superwind to achieve this performance.

a) The rotor blades were developed using modern computerized calculation and

simulation methods. The airfoil had been wind tunnel tested and was specifically
developed for small size rotors.

Relatively broad rotor blades combined with a special pitch angle produces a
high start-up torque, enabling the rotor to start at only 3.5 m/s wind speed.

Optimum start-up performance will be reached after a
mechanical run-in period of the bearings and their seals. This
‘break-in’ period will vary depending on the winds speed and
hours the turbine is left “on” in windy conditions.

When using the

Superwind

for battery charging, do not mistake rotor start-up for

the start of charging. The wind speed required to start charging the battery
depends on the battery charge load at the time and might be slightly higher than
the rotor start-up wind speed.

The term ‘cut in speed’ describes when the turbine can start producing power to
charge your batteries. This is a higher wind speed than the ‘start up wind speed’,
a lower wind value where your turbine may spin, but will not be producing power.