Until we know that large wind turbines/mills to generate electricity. But the technology advanced such that these wind turbines came to our home for our domestical use. In this ppt I discussed about new small residential wind turbines by which we can reduce our electrical bills and more. Have a look!

1. ADVANCEMENT IN
WIND ENERGY
Ravi Damerla
SOLAR WIND TURBINE
VERTICAL AXIS
WIND TURBINE
HORIZONTAL AXIS
WIND TURBINE
Damerla Ravi Teja
IV. B.TECH – EEE
09221A0212
damerlaivar@gmail.com
www.ravidamerla.tk

2. Ravi Damerla
WIND ENERGY
I. Wind is abundant almost in any part of the world.
II. Its existence in nature caused by uneven heating on the surface of the earth as well
as the earth’s rotation means that the wind resources will always be available.
III. Wind energy is the most reliable and effective renewable energy resource for
responding to growing demand

3. Ravi Damerla
WHERE DOES WIND COMES FROM?
I. The wind is a by-product of solar energy.
II. Approximately 2% of the sun's energy
reaching the earth is converted into wind
energy.
III. The surface of the earth heats and cools
unevenly, creating atmospheric pressure
zones that make air flow from high- to
low-pressure areas.
Wind energy, like the other renewable energy sources, prevents the emission of
CO2; is a limitless resource and reduces nations’ energy dependence

4. Ravi Damerla
WIND POWER
I. Wind power is a measure of the energy available in the wind.
II. It is a function of the cube (third power) of the wind speed.
III. This relationship means that small differences in wind speed lead to large
differences in power.
EQUATION OF WIND POWER
I. The amount of power available in the wind is determined by the equation
I. w is power, r is air density, A is the rotor area, and v is the wind speed.
II. Air density varies according to elevation, temperature and weather fronts.
w = 1/2 r A v3

5. Ravi Damerla
I. The first use of a windmill to generate
electricity was in Cleveland, Ohio in
1888 by Charles F. Brush.
II. During the 1920’s modified propellers
were used to drive direct current
generators.
WIND AS ELECTRICITY
The First Wind Mill
PAST

6. Ravi Damerla
WIND AS ELECTRICITY
WIND TURBINES
HORIZONTAL AXIS WIND
TURBINE (HAWT)
VERTICAL AXIS WIND
TURBINE (VAWT)
I. Presently we are generating electricity with wind is based upon mainly on wind
turbines.
II. These wind turbines can be classified generally as commercial or residential.
III. The commercial or utility scale turbines typically tower above the ground at 60 to
200 feet where the air moves more freely.
IV. Wind turbines are able to capture and convert to electricity the clean, green
renewable energy that flows everyday at most places on Earth.
PRESENT

7. HORIZONTAL AXIS WIND TURBINE ( HAWT )
PRESENT
I. This is the most common wind turbine design.
In addition to being parallel to the ground, the
axis of blade rotation is parallel to the wind
flow.
II. The commercial wind generators commonly have
three blades that help balance out the device and
reduce wear and tear on the bearings.
III. The horizontal axis wind turbine have a gearbox
that drives an electrical generator on the backside.
IV. The tip speed on the wind turbine blades can be as
much as six times the speed of the wind itself.

8. Ravi Damerla
I. Wind generators are much smaller in size
compared other types electrical generators.
II. Small size allows wind power to be very
versatile.
III. Wind power is a great compliment to a house
with a preexisting photovoltaic system.
IV. Serves as a great backup system.
V. Wind power gives off no harmful emissions into
the environment.
VI. The more time spent researching makes each
new wind turbine more efficient.
SOME LIST ABOUT HAWT
Some of the disadvantages of large commercial horizontal wind turbines is that
construction, transportation and installation can be quite expensive. Some local residents
may object to a wind farm disrupting the appearance of the landscape.

9. Ravi Damerla
I. The vertical axis turbines can be installed lower to the ground and may offer more
unique design than horizontal turbines with typical blades.
II. The energy provided by residential wind turbines can offset part of one's monthly bill
or in some instances will provide the homeowner the chance to sell power back to the
utility company.
III. Home wind generators, whether on the rooftop or in one's yard provide those with
houses the opportunity for individual energy independence including lower bills.
VERTICAL AXIS WIND TURBINES ( VAWT )
HELIX
PLS - VAWT

10. Ravi Damerla
HELICAL WIND TURBINE
Helical wind turbines have grown in popularity recently
especially for home and urban use.
They look like DNA structures, other spiral designs which
catch the wind and produce electricity.
slower speeds along the blade tips
mounted on rooftops, in yards, at airports or other settings
depending upon the exact design and application
bird safety
less susceptible with crosswinds than bladed turbines
no tail-fan to keep them pointed in the optimal direction
beauty of the Helix Wind turbine
mounted lower, so installation costs will be lower, and regulations less significant.

11. Ravi Damerla
A MODEL APPROACH ON HELICAL WIND TURBINE
As the wind blows the long helical blade scoops catch wind from all directions forcing it
through the turbine.
In winds as low as 10 mph
the Helix system creates
electricity to power your
home or business
The turbine generator is connected directly to your home and as electricity is generated
your home is powered.
The success of the
commercial wind industry
has propelled significant
advances in small turbine
design, making these
systems more reliable,
quieter and safer than
those introduced in past
decades

12. Ravi Damerla
PLS – VERTICAL AXIS WIND TURBINE
PLS has provided the latest cutting-edge technological VAWT.
These VAWT can serve as a single source of energy generation or can be coupled together
with appropriate solar panels so as to become a complete off-grid solution.

13. Ravi Damerla
This new range of VAWT generators works on a proven Magnetic Levitation technology
to enhance efficiency.
The three wing-blades are built on similar principles as aircraft wings, which help the
turbine to rotate and generate energy at a very low wind speeds.
Major advantages with the VAWT system are
- Low start-up wind speed, Less Noisy
- Excellent structural stability as compared to HAWT
- Freedom from directional wind
- low maintenance
- there is no mechanical wear & tear
Pls introduced the 300W Vertical Axis Wind Turbine (VAWT)
system at first and they are ready with a complete range of
VAWT systems generating up-to 3000W power

14. Ravi Damerla
DIFFERENCES BETWEEN TRADITIONAL
AND PLS VERTICAL AXIS WIND TURBINES

15. Ravi Damerla
Bluenergy Solarwind™ Turbine FUTURE

16. Ravi Damerla
DESIGNING
The world’s first self-contained hybrid system from the
Blue energy technologies.
fluoropolymer (a clear film) process capture sunlight
from any angle
Solar cells can be affixed to curved surfaces, making it
possible to completely cover, with productive solar
cells, the turbine’s curved wind vanes
The dome-shaped base enclosing its generator and
inverter
Generates electricity in breezes as low as 4 mph and is
designed to produce power in winds up to 90 mph

17. Ravi Damerla
ELEMENTS
Solar cell Encapsulation technology
- Differ from the solar panels now
-Covered by layers of pure fluoropolymer
-dirt resistance
-Non reflective
- impact resistance
Special Dendrite process creating a
microscopic field that captures sunlight
from all angles and steers the light onto
the cells without the use of extra optics or
bulky tracking devices

18. Ravi Damerla
Using solar cells on the wind vanes increases the power output of the wind turbine by
approximately 30-35% and allows electricity to be made even when the wind is calm.
Double – Helix shaped wind vanes :
Best use of family of Polyurethane Foam and carbon composites
called Baydur® for Solarwind™ Turbines up to 10 kW
molded 3D shapes with high intrinsic stiffness and high strength
can be produced
Aluminum molds are used resulting in a very safe and
environmentally friendly production process
strong, extremely lightweight and rigid molded parts can be
produced fast
Double – Helix shaped wind vanes

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20. Ravi Damerla
DOUBLE – HELIX SHAPED VERTICAL AXIS WIND TURBINE

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Generator
A three-phase alternating current-
synchronously permanent magnet generator
has been specified.
especially designed for wind-powered
devices
The fixed winding of the rotor is continuously
activated through these magnets, so that the
generator immediately delivers power even
at low revolutions per minute
Current Transfer system for Solar
Slip-ring technology provides for the transfer
of electric currents produced by the
encapsulated solar cells
extremely long life with a minimum of
maintenance
Inverter
The inverter combines the solar
electricity and wind generated
electrically into one current
The Turbine Axis – Bearings
The axis is a hollow, re-enforced steel
mast, using a double frictionless
bearing system to decrease
resistance, while increasing efficiency
This bearing system allows self-
stabilization of the rotating turbine,
so that even in very high winds, the
heavy material stresses and loads are
reduced and remain perfectly
balanced

22. Ravi Damerla
Technical Advantages
Production Advantages
• Utilization of wind and sun energy in one
element
•Uses winds from all directions, even
turbulent winds
•self-regulating stability
•Solar cell surface has a Dendrite system
absorbing the sun light from all angles
•Stacked, segmented, identical sections
•Starts charging with very low wind speeds; as low as 4 mph
•No shutdown is necessary during heavy storms
•Produces about 50% more electricity than traditional horizontal propeller turbines
Cost Advantages
•Lower maintenance cost
•Lower repair cost
•Lower installation cost
•Lower insurance cost
ADVANTAGES

23. Ravi Damerla
CONCLUSION
The reality of global warming demands that we aggressively pursue visionary, innovative
methods to produce clean affordable energy while regenerating our environment’s health
Bluenergy Solarwind™ has created the world’s first hybrid system, which generates
electricity from solar cell encapsulated wind vanes in a double-helix shape – a natural
shape using nature’s forces
A generating system that is efficient, silent, in harmony with its environment, and safe for
plant, animal and human life
A small wind energy system can reduce a customer’s electricity bill significantly, or even
eliminate it completely
Over its 20- to 40-year life, a small residential wind turbine can offset approximately 1.2
tons of air pollutants and 200 tons of carbon dioxide and other "greenhouse" gases

24. Ravi Damerla
The reality of global warming demands that we aggressively pursue visionary, innovative
methods to produce clean affordable energy while regenerating our environment’s health
Bluenergy Solarwind™ has created the world’s first hybrid system, which generates
electricity from solar cell encapsulated wind vanes in a double-helix shape – a natural
shape using nature’s forces
A generating system that is efficient, silent, in harmony with its environment, and safe for
plant, animal and human life
A small wind energy system can reduce a customer’s electricity bill significantly, or even
eliminate it completely
Over its 20- to 40-year life, a small residential wind turbine can offset approximately 1.2
tons of air pollutants and 200 tons of carbon dioxide and other "greenhouse" gases
THANK YOU