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Wind Generators for Autonomous Installations |
Wind Energy - Small Size Wind Generators
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Wind Generators for Autonomous Installations (Battery
Chargers)
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butterfly series
GENERAL DESCRIPTION
The line of Wind generators of ENERGOTECH with the name butterfly (bf)
incorporates experience of 25 years. Bf is a wind generator drawn
entirely from the beginning taking into consideration the most
recent technological developments and modern materials, It is intended
to function for a long time interval without maintainance.
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construction of butterfly
click the images to resize
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INNOVATION Α
The planning of bf allows
her operation in any speed of
wind, because it incorporates a innovation rotor which is redundant to
force of wind, via a active system of fluctuation diameter of rotor
that is activated by the increased pressure of
wind, instant or enduring. This movement of air is checked for
consistency by a central piston of double energy (gas Sprint piston)
installed in her concave axis, with which are connected her feathers.
The result is that, when the wind gives bigger force than her
nominal, the diameter is decreased progressively so that it
rejects the redundant force of wind, without ever being
immobilized. In this way bf can “feel” possible
danger and self-protects.
The idea of this movement of ferns that resembles a dance, partly is
“borrowed” from the butterfly from which it takes
its name.
The blade of bf are theoretically unbreakable from the wind, because they
are manufactured by composite materials of high resistance (carbon
epoxy) that they are also used in aeronautics.
INNOVATION Β
Another important innovation for so much small force wind
generator, is the method of control on the wind directions
(Prosanemismos). The
small wind generators usually are directed in the wind via a tail van.
This method is from one hand economical but presents big losses of
energy
because with each instant lateral gap it accepts, it gets diverted by
the direction of the wind with result the reduction of the number of
turns of the
generator, fall of voltage and power. Bf hunts the wind via a active
system of control that includes small lateral rotor that is turned in
an angle 90 degrees in respect to the axis of the rootr and is involved in the vertical axis
via a reduced gear.
This method of checked control has as result the immunity to instant
lateral gaps and of remaining regularly above in the main direction
of the wind. This means less shock, constant tendency and force
hence more energy, that in combination with innovation A exceeds
30%.
The generator the bf is multi poled, and its
excitation it is achieved by most powerful permanent magnets
(neodymium) which are incorporated in the hub of the rotor and
is turned immediately by this without the mediation of cogwheels or
other means for multiplication of her turns.
The produced three phase current is led to a powerful rectifier unit is
stabilized where it is changed in continuous DC current. A advanced
charger understands automatically the accumulator voltage accumulators
(12.24.48 V), checks their charge. Simultaneously he supplies the
inverter so that he gives 230/50 Hz for use in autonomous system (SA)
or interconnection in the electric grid (GR).
For the braking bf the natural magnetic field of runner is developed,
that is checked by the table of
clues via switch
NOTE
1. The innovation bf and its name are protected with patent.
2. The ENERGOTECH offers license for local production of bf.
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Basic Advantages
Permanent magnet alternator - it produces current in
law revolutions and does not require mechanical system for
revolutions multiplication
Mechanic protection system, thus reliable
Excellent construction quality with stainless steel
parts for effective protection from the corrosion
Easy stopping through a switch
Noiseless operation
Maintenance - It is not required to be frequent
Maintenance - It is not required to be frequent
Light weight
Long
life service
In
sites where the wind blows usually in low speeds, the parallel
installation of a solar generator (photovoltaic panels) is advised
so that the energy production relies on two sources: the wind and
the sun, and the whole installation is more reliable.
 Diagram for the three different versions of butterfly
The
current produced by the wind generator (and the PV panels - if they
exist), is transferred to the batteries by the Energy Management
Unit (EMU). Then, the EMU attributes that current following the
voltage 220V AC 50Hz for the operation of home devices. If a grid
connection exists, any extra energy produced can be stored there.
This will result financial gain from the sale of energy to the power
company. A simple block diagram of the installation is shown.
The butterfly
wind generator
is offered in three different versions.
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 Installation Diagram
For your inquiries
concerning autonomous systems, please fill in the following form and
send it to us by fax or e-mail, in order to give you a complete
answer that will cover your own energy needs: Questionnaire, recording of the consumptions and calculation
of the energy needs.
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 General Principles of the optimal positioning for windgenerator installation
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Wind Energy 
