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

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

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

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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 v 3

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

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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

HORIZONTAL AXIS WIND TURBINE ( HAWT ) Ravi Damerla

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.

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.

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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

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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.

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

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.

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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

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DIFFERENCES BETWEEN TRADITIONAL AND PLS VERTICAL AXIS WIND TURBINES

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Bluenergy Solarwind™ Turbine FUTURE

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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

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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

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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Ravi Damerla

DOUBLE – HELIX SHAPED VERTICAL AXIS WIND TURBINE

Ravi Damerla

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

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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

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

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