Presentation on

Generation of DC by using VAWT(Vertical Axis Wind Turbine)

•prepared by :-Viral S Desai-Jaimin R Shah-Parth S Patel-Darshil G Patel

-Internal Guide : Mr. Kaushtubh Vyas-External Guide : Mr. Pavan Patel-Company : Ohm Groups

•Guided by :

Presentation Outline

1. Introduction

2. Abstract

3. Wind Turbine

4. VAWT

5. Block Diagram

6. Project Component

7. Measurement of wind speed & velocity

8. Advantage

9. Disadvantage

10.Application

11.Conclusion

12.Future aspects

Introduction

• Wind power turbines come in handy in the market today. Vertical-axis wind turbine happens to be one of the most popular and widely coveted wind turbines.

• It is also more practical, reliable and cost effective has the best longevity and durability features. Therefore, you will be able to use it efficiently over a long haul.

• The turbine is also designed in a unique way that enables it to work efficiently in an urban and suburban area.

Abstract

• To generate the electricity with the help of VAWT (Vertical axis wind turbine).The VAWT is use for generate the 10watt D.C. power & LED is turn on.

• A VAWT does not need to be oriented into the wind a the power transition mechanisms can be mounted at ground level for easy access.

• For generating the power it is depend on the velocity of the wind But we assured that VAWT is generate the fixed D.C. output which is depend on the velocity of the wind.

Wind Energy

• The kinetic energy of the wind can be changed into other forms of energy, either mechanical energy or electrical energy.

• The kinetic energy contained in wind can be transferred to other objects, such as boat sails, or transformed into electrical energy through wind turbine generators.

• With the recent surge in fossil fuels prices, demands for cleaner energy sources, and government funding incentives, wind turbines are becoming a more viable technology for electrical power generation.

Wind Turbines

How Wind Turbines Work?

• All wind turbines essentially work the same way with minor modifications depending on size and configuration.

• The wind turns the blades to spin a shaft which connects to a generator which produces electricity.

• Essentially the rotors harness the kinetic energy of the wind and coverts it into electrical energy.

Types of Axis

- Higher wind speeds

- medium efficiency

- has to be moved into the

direction of the wind

- very high power

- Efficiency – 18% to 20%

• Horizontal Turbine :

Types of Axis

- Can place generator on ground

- Wind direction doesn't matter,

it adjusts to it its self.

- medium power

- Efficiency – 50% to 60%

• Vertical Turbine :

why we chose a vertical axis turbine instead of a horizontal

axis?

• Works at a lower wind speeds.

• Wind direction doesn't matter.

• Different than our classmates.

Vertical Axis Wind Turbine

• We make a “Giro Mill” type VAWT.

• The turbine starts rotating at 4m/s speed.

• VAWTs are rugged, quiet, Omni-directional.

• VAWT doesn't create as much stress on the support structure.

• It can be installed on chimneys and similar tall structures.

• Popularizing the wind energy for domestic application.

• The generator is mounted on

a short tower.

• The blades point upward.

Block Diagram

PERMANENT MAGNET BRUSHLESS GENERATOR

Permanent magnet generator is same as that of shunt motor with the differencethat there is permanent magnet instead of stationary field winding for producingthe required magnetic flux.

Since this is Brushless and Commutator is absent it requires practically no maintenance.

The Life of this type of motor is longer compared to others.

Project Components :

BLADE

Blade design is made of aluminum and epoxy resin.

Above material are used for our blades.

Aero Dynamic blade made of carbon fiber is light weight. Has a razor sharp edge which cut through the wind and makes it virtually silent.

Project Components :

Measurement of Wind Speed Velocity

• In prior stage of the wind turbine project has basic requirement is to measure the wind speed and the velocity.

• Testo is the German equipment to measure the wind and all other parameters is use for any of our wind project for assurance of wind speed.

Advantages

• Accepts wind from any angle.

• Better answer to rapidly changing winds.

• Components can be mounted at ground level

- Ease of service

- Lighter weight towers

• Virtually silent operation.

• High Mechanical stability.

Disadvantages

• Rotors are generally near ground where wind is poorer

• Poor self-starting capabilities

• Requires support at top of turbine rotor sturdy construction

• Requires support at top of turbine rotor

• Overall poor performance and reliability (although it is argued that it is mainly due to lack of research and development and not aerodynamics)

Application

Conclusion

• we done our literature survey and market survey on VAWT. And it has try to mentioned advantages, applications, limitations.

• And also it is understood that in the future most of our energy source will based on wind energy.

• We justify that how to VAWT works and produces electricity through block diagram.

• Also, we understood how to design blade and measurement of wind speed with use of anemometer.

• It had made a prototype model with using a acrylic material and try to mentioned a it looks like a original model.

Future Aspects

• In past days VAWT had to be start by giving excitation.

• Our project aspect is to make self starting wind turbine.

• And second one is to reduce the power fluctuation due to the uneven wind. so, that we get constant power supply.

• For that, We will put a gear-box between turbine & rotor shaft.

References

1. Non-Conventional energy sources by smt. C.K.Rai

2. Wikipedia Encyclopedia. Retrieved from http://en.wikipedia.org/wiki/Image:H-Darrieus-Rotor.png.jpg on November 28, 2005.

3. Read some Papers on VAWT through Wikipedia

4. http://www.urbanwind.net/pdf/technological_analysis.pdf

5. We have to use catalogue of ohms groups.

LAST TO SAYLAST TO SAY

CLEAN POWERCLEAN POWER

GREEN POWERGREEN POWER

WIND POWERWIND POWER

Thank you...Thank you...

Any que?