Wind Turbine

Utilization of wind energy for power generationWindmill (Wind turbine Generator)

ObjectiveOur objective is to utilize wind energy (non-conventional energy resource) for the generation of electricity.A small-scale windmill (wind turbine) can generate electricity if coupled with a generator and exposed to fast blowing winds.

Wind PowerIt deals with the conversion of wind energy into an-other usable form of energy such as electrical energy, mechanical energy (for pumping water, sailing ships, feeding water to crops) etc.

Wind-millWindmill is a simple dynamic machine used directly to convert kinetic energy from fast blowing winds to rotational energy (mainly to turn shaft or any other assembly).As the wind strikesthe blades, it causesthe blades torotate …

Principle of WindMillWhen the wind strikesblades of windmill,kinetic energy of windis utilized by bladesand blades rotate.Rotating shaft isconnected toelectricgenerator, whichin turn rotates asthe shaft does.Mechanical Energy from ShaftSince blades aredirectly connected toshaft, so bladesrotate the shaft.Kinetic Energy from WindsElectrical Energy from Generator

Components of WindmillBladesHubShaftElectric GeneratorMain BodyTailTowerBaseElectric wiresBulb

Assembly of WindmillWind striking the blades …Blades rotate …Electricity generated …BladesHubShaftGeneratorBodyTailBulbTower ‘n’ Base

Estimated Costs andProposed MaterialsBladesProposed material for blades is Aluminum, PVC plastic (Aluminum foil’s price is Rs. 300 per kg, while PVC’s is 500 per kg) or Cedar wood.HubProposed material is ‘Steel’ or Wood (~ Rs. 200).ShaftProposed material is ‘PVC’ (~ Rs. 150).Main BodyProposed material is ‘Aluminum sheets’ or ‘Wooden case’ (~ Rs. 500).

Estimated Costs andProposed MaterialsTailPVC is the most suitable material (~ Rs. 150).Tower and BasePVC, Steel or Wood may be used here (Rs. 400).Electric motor (as generator)DC motor, with about 1000 rpm and 12 to 18 volts (~ Rs. 400).Bulb and Wires2 copper wires and 1 filament bulb (LEDs are also under consideration) (~Rs. 50).Total cost ranges from Rs. 2000 to 2500.

Specifications & ExpectationsWe may use 3 or 4 blades for our windmill design (of about 18’’ to 24’’ length).We shall use dc motor as generator rated against 12 to 18 VDC.We hope to generate from 2 V to 5 V of potential from electric generator.We hope to get minimum of 100 mA of current from generator.If we wouldn’t be able to achieve expected results, we may increase the size of blades or rating of generator.

Advantages of WindmillWind Energy (fuel for windmill generator) is renewable, so it will never run out.Windmill doesn’t produce any poisonous gases, smoke, fumes, etc. as it doesn’t involve any burning process. So, it’s clean.It’s a very cheap way to generate electricity from.Windmills have very low maintenance costs as compared to those of other power generation plants.

Limitations of WindmillsWindmills cause a lot of noise, so a windmill farm may become bothersome for people living nearby.Installation costs for windmills are very high, and its designing requires very high technical skill and knowledge.Since wind is unpredictable, so we may not get electricity all the time.Efficiencies for these wind turbines are very low.

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Thank YouHafiz Muhammad Ashraf … 08-ME-21Sheikh Haris Zia … 08-ME-39Ibrahim Azhar … 08-ME-53Muhammad Haris … 08-ME-69Ahmed Hilal Khan … 08-ME-125

Wind Turbine

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