VIDEO: WIND POWER
It’s the school information day. Two students (Andrej and Grega) are giving a visitor (Amresh) a tour
of the school. Part of the tour involves taking visitors to the roof where the students demonstrate the
wind turbine.
Structure:
1
2
Sections and key points
INTRO

Students at the school learn a great deal about renewable
energy.

A wind turbine has been installed for this purpose.
Wind Turbines
Who?
Grega
Duration
15s
Andrej
1 min
Grega
Amresh
1 min

3
What is a wind turbine? (general definition)
o captures wind power
o uses the power to generate electricity
 Some advantages of wind power
o free
o environmentally-friendly
o low costs of maintenance
o take only a small plot of land
o can be used in remote areas that are not connected
to a power grid
Components of a typical wind turbine

Components that can be seen on the roof (and their
functions, very briefly)
1. Blades
 rotate with the wind and capture wind
power
2. Rotor
 includes the blades and the hub which holds
them together
 the rotating part of the turbine
3. Tower
 gives the turbine height, thus avoiding
obstacle and capturing more wind power
4. Anemometer (speed)
 a sensor that measures the speed of the
wind
5. Wind wane (direction)
 a sensor that measures the direction of the
wind
6. Nacelle
 houses the internal components


Question by visitor (What’s inside the nacelle?)
Grega answers
1. A combination of low-speed and high-speed shafts
and their gear boxes are used to turn the generator
in order to produce electricity.
2. It also contains the Yaw drive and its motor, which
are used to keep the rotor facing into the wind as
the wind direction changes.
4
3. Also contains the controller, which is a computer
system that controls the overall operation of the
turbine.
Technical specifications
Andrej
1 min
Everyone
1 min
Everyone
15s
1.
2.
3.
4.
Manufacturer: Southwest Windpower (USA)
Model: Air X
Body made of cast aluminium
3 blades made of carbon fibre, forming a rotor with a
diameter of 1.15m
5. Start-up wind speed = 12.8 km/h
6. Survival wind speed = 177 km/h
7. Rated power = 400 watts at 45mph
5
Note: why it does not work
Questions and Answers
1st question: any disadvantages?
Grega:
 No wind, no power
 Can be noisy
 Some people find them ugly
2nd question: Is wind power a common source of energy in
Slovenia?
Andrej answers.
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OUTRO
Grega: Any other questions?
Amresh: No, no questions for now, the concept has been well
explained etc...
Andrej: OK, so we can now move on to the Solar panels...
Total duration: Approx. 00:04:30