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Presentationkam
Presentationkam
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Presentationkam

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  • 1. 1
  • 2. 2• Sir UsmanPervaizPRESENTED TO:• Kamran AsadL1F12BSEE2076PRESENTED BY:Topic: Wind Turbine
  • 3. • A wind turbine is a device thatconverts kinetic energy from the wind,into mechanical energy , alsocalled wind energy; a process known3as wind power. If the mechanical energy is used to produceelectricity, the device may be called a wind turbine or wind powerplant
  • 4. • The first automatically operated windturbine, built in Cleveland in 1887 byCharles F. Brush. It was 60 feet (18 m)tall, weighed 4 tons (3.6 metric tones) andpowered a 12 kW generator.• The first megawatt-capacity wind turbinein the USA, in 1941.4
  • 5. Parts of a Wind TurbineNacelle56 tonsTower3 sectionsBlade112’ long5
  • 6. •Anemometer: Measures the wind speedand transmits wind speed data to thecontroller.•Blades: Most turbines have either two orthree blades. Wind blowing over the bladescauses the blades to "lift" and rotate.•Brake: A disc brake, which can be appliedmechanically, electrically, or hydraulically tostop the rotor in emergencies.Part ofWind turbine•Controller: The controller starts up the machine at wind speeds ofabout 8 to 16 miles per hour (mph) and shuts off the machine atabout 55 mph.6
  • 7. Gear box: Gears connect the low-speedshaft to the high-speed shaft and increasethe rotational speeds from about 30 to 60rotations per minute (rpm) to about 1000 to1800 rpm, the rotational speed required bymost generators to produce electricity.Generator: Usually an Induction generator7Is used that produces 60-cycle AC electricity. High-speed shaft:Drives the generator. Low-speed shaft: The rotor turns the low-speed shaft at about 30 to 60 rotations per minute.Part ofWind turbine
  • 8. •Nacelle: The nacelle placed at top the tower andcontains the gear box, low- and high-speedshafts, generator, controller, and brake. Somenacelles are large enough for a helicopter to land•Pitch: Blades are turned, or pitched, out of thewind to control the rotor speed and keep the rotorfrom turning in winds that are too high or too lowto produce electricity.•Rotor: The blades and the hub together are called the rotor.•Tower: Towers are made from tubular steel (shown here), concrete, orsteel lattice. Because wind speed increases with height, taller towersenable turbines to capture more energy and generate more electricity8Part ofWind turbine
  • 9. •Wind direction: According to wind directionthere is two types of turbine upwind ordownwind turbine, upwind is operates facinginto the wind and downwind turbine is facingaway from the wind .•Wind vane: Measures wind direction andcommunicates with the yaw drive to orientthe turbine properly with respect to the wind.Yaw drive: Upwind turbines face into thewind; the yaw drive is used to keep the rotor facing into the wind as thewind direction changes. Downwind turbines dont require a yaw drive,the wind blows the rotor downwind.•Yaw motor: Powers the yaw drivePart ofWind turbine9
  • 10. Types of wind turbineHAWT: Horizontal Axis VAWT: Vertical Axis 10
  • 11. How does it works??• A wind turbine works the opposite ofa fan. Instead of using electricity tomake wind, like a fan, wind turbinesuse wind to make electricity. Thewind turns the blades, which spin ashaft, which connects to a generatorand makes electricity.• Wind turbines can be used toproduce electricity for a single homeor building, or they can beconnected to an electricity grid(shown here) for more widespreadelectricity distribution11
  • 12. 12
  • 13. Types of Electricity Generating WindmillsSmall ( 10 kW)• Homes• Farms• Remote Applications(e.g. water pumping,telecom sites, icemaking)Large (250 kW - 2+MW)• Central Station Wind Farms• Distributed PowerIntermediate(10-250 kW)• Village Power• Hybrid Systems• Distributed Power13
  • 14. 14Suitable location• To be considered a good location forwind energy, an area needs to haveaverage annual wind speeds of atleast 12 miles per hour.• Brockport:– 14.5-15.7 mph (6.0-6.5 m/s)• Offshore:– 16-20.1 mph (7.5-9 m/s)14
  • 15. Advantages of Wind Power• Wind turbines do not produce anywaste, greenhouse gases, toxins orby-products that can harm theenvironment• No air pollution• Wind farms can be built offshore• A good method of supplying energyto remote areas• Land beneath wind turbines can beused for farming and grazing.• Wind turbines require no fuel.15
  • 16. Disadvantage of Wind turbine• Cost high.• Wind turbines are noisy.• Usually large and clear location is used for wind turbine.• High maintenance.• Power density is very low.• Needs a very large number of wind mills to producemodest amounts of power.• Harm for birds.16
  • 17. Transmission• A group of wind turbines canmake electricity for the utilitygrid.• The electricity is sent throughtransmission and distributionlines tohomes, businesses, schools, and so on.17
  • 18. Large Wind Turbines• 450’ base to blade• Each blade 112’• Span greater than 747• 163+ tons total• Foundation 20+ feet deep• Rated at 1.5 – 5 megawatt• Supply at least 350homes18
  • 19. Information• Efficiency varies by machine~ 40% of wind collected will be turned into electricity• The earth receives 1.74 x 1017 watts of power (per hour) fromthe sun• About one or 2 percent of this energy is converted to windenergy (which is about 50-100 times more than the energyconverted to biomass by all plants on earth• Pakistan is developing wind power plants in Jhimpir, BinQasim , Keti Bandar and Gharo in Sindh.• At 15° Celsius air weighs about 1.225 kg per cubic meter, butthe density decreases slightly with increasing humidity.19
  • 20. Wind Turbines (flights of fancy)20
  • 21. 21

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