Wind energy development has a long history dating back to ancient cultures using windmills. Today, wind power accounts for 27% of renewable energy production globally and its use is growing. Wind is caused by differences in heating of the Earth's surface creating areas of higher and lower pressure. Modern wind turbines convert the kinetic energy of wind into electrical energy using components like blades, a generator, and a nacelle. When designing wind farms, factors such as turbine type, blade number, rotor size, and siting distances must be considered to optimize efficiency and safety. While upfront costs are high, wind power prices have decreased in recent years and wind energy is one of the lowest-priced renewable technologies available.

1. WIND ENERGY
Done by:
Presented for:

2. WIND ENERGY DEVELOPMENT
Wind Energy
Development
Wind
Availability
Wind
Energy
Physics
Wind Turbine
Components
Design
Considerations

3. HISTORY
 Wind energy is one of the oldest
sources of energy used by humankind
 Ancient cultures used Windmills for
pumping water and grinding cereals
 Due to the oil crisis in the 1970s, energy
sources emitting less pollution would be
necessary

4. 20
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41
4
13
WORLD ELECTRICITY GENERATION
Nuclear
Oil
Coal
Gas
Renewables
Solar
9%
Biomass
10%
Hydro
54%
Wind
27%
RENEWABLES PRODUCTION

5. CUMULATIVE PRODUCTION

6. COUNTRIES’ SHARE

7. WIND AVAILABILITY
Wind Energy
Development
Wind
Availability
Wind
Energy
Physics
Wind Turbine
Components
Design
Considerations

8. WIND ORIGINS
 When sunlight strikes Earth's surface, it heats that surface differently
 Heated air rises, creating an area of low pressure
 Cooler air descends, creating an area
of high pressure
 Air flows from areas of high pressure into
those of low pressure.
 This flow of air is wind

9. GLOBAL AVAILABILITY

10. WIND ENERGY PHYSICS
Wind Energy
Development
Wind
Availability
Wind
Energy
Physics
Wind Turbine
Components
Design
Considerations

11. HORIZONTAL AND VERTICAL AXIS
TURBINES

12. WIND POWER CALCULATION
P =
A · ρa · v3
2
 ρa: air density
 A: Rotor Area
 V: Wind Speed

13. POWER CURVE
 Vc: cut in wind speed (3–5 m/s)
 Vr: rated wind speed (12–15 m/s)
 Vf: cut off wind speed (~25m/s)

14. WIND TURBINE COMPONENTS
Wind Energy
Development
Wind
Availability
Wind
Energy
Physics
Wind Turbine
Components
Design
Considerations

15. TURBINE COMPONENTS

16. BLOCK DIAGRAM

17. DESIGN CONSIDERATIONS
Wind Energy
Development
Wind
Availability
Wind
Energy
Physics
Wind Turbine
Components
Design
Considerations

18. CHOOSING A TURBINE
 Number of Blades: -Low number of blades=higher torque
-Odd number of blades=more stability => 3 BLADES
 Rotor Area and height: Chosen according to the demanded power of turbine

19. SITING
Horizontal direction:
4 times rotor
diameter
Vertical direction:
7 times rotor
diameter

20. LATEST INNOVATIONS
Bladeless Turbines

21. CONCLUSION
 Even though the cost of wind power has decreased in the past 10 years, the technology requires a
higher initial investment than fossil-fueled solutions for power supply
 Major challenge to using wind as a source of power is that the wind does not always blow when
electricity is needed
 Wind turbines can be built in rural areas, thus benefiting the economy there.
 Wind energy is one of the lowest-priced renewable energy technologies available today
 It has been estimated that wind power could supply one third of the world’s electricity by 2050

22. ANY QUESTIONS ??