2. Chapter Outline :
1) Introduction of wind power.
2) Wind power components.
3) How the wind power station works.
4) Advantage and disadvantage of wind power.
5) Unit review.
3.
4. 2) Wind power components.
Blades are the main distinction of
wind power generator. Composed of 2
or 3 blades and a hub. When winds
blow through the wind turbine, there
forms an angle between wind and
blades where lifting force takes shape
and make the blades rotate. In this
way, wind generator works and begins
to generate electricity.
5. 2) Wind power components.
Gearbox is another essential
component in nacelles. The low rotate
speed of wind turbine can’t meet the
requirement of generating power. So
there is a gearbox with two spindles
on both sides of it, one is connected
to wind turbine, the other is
connected to generator. The rotate
speed can reach up to 50 times
through a gearbox.
6. 2) Wind power components.
Generator is also called
induction machine. Using
electromagnetic induction
principle, generators convert
mechanical energy produced by
wind turbine to electric energy.
The load of modern wind
turbine generator is usually from
500KW to 1500KW.
7. 2) Wind power components.
Computer System constantly monitors
the condition and operation data of
generator, including wind speed and
direction, turbine and generator rotation
speed, generator temperature and power,
current and voltage, etc. When wind
turbine reaches their highest speed, or
components overheat, the controller will
automatically stop the generator, and call
operators to debug.
9. Advantage Disadvantage
Clean, zero emission.
Wind stations need to have fixed wind
speeds.
Reduce fossil fuel dependence.
The height of the towers may obstruction
vision.
Renewable . Small power generation.
less expensive. variable output.
4) Advantage and disadvantage of wind power.
