The document discusses wind energy and wind turbines. It provides background on how wind energy works, the history of windmill usage dating back to 2000 BC, and the components and functioning of modern wind turbines. Today, wind turbines can generate 250-300 kW of power from the same size that traditional European windmills produced. Wind energy is a renewable resource that can be used to generate electricity, though it has intermittent availability.

1. WIND ENERGY
By- RAKESH KUMAR
BE/15082/12
SHUBHAM KUMAR
BE/15090/12

2. WIND IN ACTION:
When wind strikes an object, it exerts a force in an attempt to move it out
of the way. Some of the wind energy is transferred to the object, in this case the
wind mill causing it to move.
WIND TODAY:
• windmills are used for pumping
water from deep underground
• Modern wind turbine is the result of
design & material advances made
during 1980s0& 1990s, which
enabled wind turbines to become
increasingly efficient.
• Today, wind turbines of same size as
the traditional European windmills
can generate 250-300 kW of power.
History of wind usage:
o one of the earliest energy resource.
o Windmills have been in use since 2000BC & were
first developed in China & Persia.
o Recorded in history, first to power boats & grind
grain, later to pump water, press oil, saw lumber
& make paper.
o Egyptians may have been the first to go up the
Nile river around 4th century BC , powered by
wind.
o Windmills were introduced to Europe by the
crusaders around 1300 AD.
o Ancient Chinese used vertical axis windmills to
grind grain and pump water.

3. WIND ENERGY:
the terms “WIND ENERGY” or “WIND POWER” describe the process by
which the wind is used to generate mechanical power or electricity.
HORIZONTAL AXIS VERTICAL AXIS

4. HOW DO WE CONVERT WIND INTO ELECTRICITY ????
wind turbines convert the kinetic energy in
the wind into mechanical power.
This mechanical power can be used for
specific tasks(such as grinding grain ,
pumping water)or a GENERATOR converts
this mechanical power into ELECTRICITY.
The energy in the wind turns two or three
Propeller like blades around a rotor. The rotor
Is connected to the main shaft , which spins a
Generator to create electricity.
Wind turbines are mounted on a tower to cap
-ture the most of energy . At 100 feet or more
Above ground they can take advantage of
Faster and less turbulent wind.

5. Total wind energy flowing through an imaginary area A
E=1/2 At흆v³
and, P=1/2 A흆풗³
P α v³
Wind power in an open air stream is thus
proportional to the third power of the wind speed;
the available power increases eightfold when the
wind speed doubles.

6. A WIND TURBINE

7. TURBINE
COMPONENTS:
 BLADE or ROTOR
 A DRIVE TRAIN
 A TOWER
 OTHER EQUIPMENTS INCLUDING
CONTROLS,ELECTRICAL CABLES,
GROUND SUPPORT EQUIPMENT,
INTERCONNECTION EQUIPMENT

8. 3.PITCH
2.ROTOR
1.BLADE
7.GENERATOR
15.TOWER

9. SPECIFIC
COMPONENTS:
description:
2.Is the ROTOR,1.BLADE convert the energy in the
wind to rotational shaft energy.
4.Is the BRAKE. It is very important to have a
Brake in wind turbine , if something is wrong or it
is going to fast , then it will brake & stop the wind
turbine.
5. Is LOW SPEED SHAFT , it goes into a big cog
wheel & this goes into a smaller cog wheel. The
small cog wheel rotates faster than big cog wheel.
7. Is GENERATOR
13. Is YAW MOTOR, it makes the wind turbine
rotate in the wind direction.
15. Is the TOWER, it supports the rotor & drive
train.

11. JAISALMER WIND PARK
INDIA’S LARGEST OPERATIONAL ONSHORE WIND FARM

12. ONSHORE WIND FARM
Advantages:
 a regular onshore turbine lasts for
around 20 years.
 Normally it takes 2-3 months before
the wind turbine has paid itself back.
This also includes the energy , which
were used to produce, install, maintain
& remove the wind turbine.
 Cheaper foundation
 Cheaper integration with electrical-grid
network.
Disadvantages:
 Wind turbines are noisy
 each one can generate same level of
noise as a family car travelling 70 mph
 some people thinks that the large
towers of wind turbines destroys the
view of the landscape.

14. OFFSHORE WIND FARM
Advantages:
 An offshore wind turbine is stronger
than an onshore turbine . It lasts around
25-30 years, & produces about 50%
more energy than onshore turbine.
 when a strong wind blows, it produces
around 3-5 MW per hour.
Disadvantages:
 More expensive to built
 More difficult to maintain and
access.

15. OFFSHORE WIND FARMS

17. ELECTRICITY GENERATION FROM WIND

18.  FREE, RENEWABLE RESOURCE
 SOURCE OF CLEAN, NON-POLLUTING
ELECTRICITY
 COST ISSUE
 ENVIRONMENTAL CONCERN
 Noise produced by rotor/blade
 Aesthetic impact
 Avian/bat mortality
 SUPPLY & TRANSPORT ISSUE

19. • If wind generating systems are compared with fossil fuelled systems on a life cycle basis ,wind costs
are much more competitive with other generating technologies.
• The major challenge to using wind as a source of power is that it is intermittent and does not always
blow when electricity is needed.
• Wind cannot be stored.
• Good wind sites are often located in remote locations , far from areas of electric power demand.
• wind resource development may compete with other uses for the land and those “alternative uses”
may be more highly valued than electricity generation. However ,wind turbines can be located on
land that is also used for grazing or even farming.
• Wind power plants have relatively little impact on the environment compared to fossil fuel power
plants.

20.  the U.S. currently has 61,110 MW of installed wind
project capacity, comprising 5.7% of total U.S. installed
electric generating capacity.
 Wind power is currently the fastest growing source of
electricity production in the world.
 A single wind turbine can power 500 homes.
 Wind power uses virtually no water, unlike other.
 At times, wind power produces as much as 45% of the
electricity in Spain.

22. THANK YOU