Wind turbines convert the kinetic energy of wind into electrical energy through a series of steps. Wind turns the turbine blades, which spin a shaft connected to a generator to produce electricity. The generator uses electromagnetic induction to transform the mechanical energy into electrical current. Other major components include the tower for support and access, foundation to anchor it, and nacelle to house the generator and other parts. While still a relatively small source of energy globally, wind power production has grown significantly in recent decades and provides a substantial portion of electricity in some European countries like Denmark and Germany.

1. Student: Ilie Vlad Stefan
Grade: XI C
Coord. teacher: Neagoe Loredana

2. Wind turbines are products that
transform the kinetic energy of
wind into mechanical energy,
and mechanical energy is
further transformed into
electrical energy.
Electricity is produced by a
system using a load regulator. It
is stored in different
accumulators. This group of
batteries will be connected to an
inverter, which converts the
turbine's continuous current
into alternating current.

3. Wind turbines are products
that transform the kinetic
energy of wind into
mechanical energy, and
mechanical energy is further
transformed into electrical
energy.

4. The wind system is based on a simple
principle. The wind turbine has a rotor
with blades oriented on a horizontal or
vertical shaft, which trained by the
wind power to move an electric
generator.
The wind moves the blades of
the turbine, which in turn acts on the
electric generator. The mechanical
system also includes a speed
multiplier that acts directly on the
center shaft of the electric generator.

5. A simple wind turbine consists of
three important parts:
- rotor blades (they capture the wind
energy and transmit it to the rotor);
-the rotor shaft (makes the
connection between the rotor and
the generator);
-the generator (simple device that
uses the electromagnetic induction
properties to produce electric
current).

6. The Transmission tower
is designed to support
the wind turbine and to
allow access to be used
for the purpose of
exploiting and
performing maintenance
operations, respectively
repairs. It is also the one
that provides the support
structure and the
strength of the upper
assembly. It plays a
particularly important
role because it has to
withstand the extremely
strong winds.

7. An equally important
role is played by the
foundation of the
wind turbine. This
ensures the
mechanical
resistance of the wind
generator. The anchor
system must have a
set of concrete
casings adapted to
each type of turbine.

8. The nacelle has
the role of protecting the
components of the wind
turbine.
The housing is
the main shaft, the speed
multiplier, the braking
device, the high shaft, the
electric generator, the
electric generator cooling
system and the pivot
system.

9. It is obvious, at this time, wind energy is still a relatively minor source of
electricity production anywhere in the world. However, wind energy
production has increased practically fivefold between 1999 and 2006,
with the share of wind energy in total energy consumption being
significant in some countries: Denmark (23%), Spain (8%), Germany
(6%). The share of wind energy in total domestic consumption was 24%
in Denmark in early 2011, 14% in Spain and Portugal, around 10% in
Ireland and Germany, and 5.3% in the EU, and in Romania only 1.6%.

10. https://www.romstal.ro/blog/ce-sunt-
turbinele-eoliene-si-cum-functioneaza/