WIND POWER GENERATION

WIND POWER GENERATION

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  A PRESENTATION ONWIND POWER GENERATION BY:- Amit Kumar Meena
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  WIND POWER Allrenewable energy (except tidal and geothermal power), ultimately comes from the sun The earth receives 1.74 x 1017 watts of power (per hour) from the sun About one or 2 percent of this energy is converted to wind energy (which is about 50-100 times more than the energy converted to biomass by all plants on earth
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  WIND POWER Windsare influenced by the ground surface at altitudes up to 100 meters. Wind is slowed by the surface roughness and obstacles. The amount of energy which the wind transfers to the rotor depends on the density of the air, the rotor area, and the wind speed.  The kinetic energy of a moving body is proportional to its mass (or weight). The kinetic energy in the wind thus depends on the density of the air.
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  WINDMILL DESIGN AWindmill captures wind energy and then uses a generator to convert it to electrical energy. The design of a windmill is an integral part of how efficient it will be. When designing a windmill, one must decide on the size of the turbine, and the size of the generator.
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  WIND TURBINE Awind turbine is a device that converts kinetic energy from the wind into electrical power There are two types of wind turbines:- Horizontal axis wind turbines vertical axis wind turbines
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  WIND TURBINE:Number ofblades Most common design is the three-bladed turbine. The most important reason is the stability of the turbine. A rotor with an odd number of rotor blades (and at least three blades) can be considered to be similar to a disc when calculating the dynamic properties of the machine.  A rotor with an even number of blades will give stability problems for a machine with a stiff structure
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  WIND TURBINE GENERATORS Wind power generators convert wind energy (mechanical energy) to electrical energy. The generator is attached at one end to the wind turbine, which provides the mechanical energy.  At the other end, the generator is connected to the electrical grid. The generator needs to have a cooling system to make sure there is no overheating.
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  WIND TURBINE GENERATORS SMALL GENERATORS:  Require less force to turn than a larger ones, but give much lower power output.  Less efficient i.e.. If you fit a large wind turbine rotor with a small generator it will be producing electricity during many hours of the year, but it will capture only a small part of the energy content of the wind at high wind speeds. LARGE GENERATORS:  Very efficient at high wind speeds, but unable to turn at low wind speeds. i.e.. If the generator has larger coils, and/or a stronger internal magnet, it will require more force (mechanical) to start in motion.
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  WIND POWER ININDIA  There is a growing number of wind energy installations in states across India. By the end of March 2014, the states of India had a cumulative installed capacity of 21264 MW. STATE CAPACITY (in MW) Tamil Nadu 7253 Maharashtra 4098 Gujrat 3414 Rajasthan 2820 Karnataka 2409 Andhra Pradesh 753 Madhya Pradesh 439 Kerala 55 Others 4.30 Total 21264
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   India isthe world's fifth largest wind power producer, with a generation capacity of 20,149 MW up to December 2013  Shown here is a wind farm in Kayathar, Tamil Nadu.
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  WIND POWER Advantages:-  Renewable Energy  Reduces Fossil Fuels Consumption  Less Air and Water Pollution  Initial Cost Disadvantages:-  Noise Disturbances  Threat to Wildlife  Wind Can Never Be Predicted  Suited To Particular Region
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  Future of WindEnergy  Future of wind energy can be bright if government policies subsidize and encourage its use  Technology improvements unlikely to have a major impact.  Can become cost competitive for electricity generation if fossil energy costs skyrocket
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  References:-  http://en.wikipedia.org/wiki/Wind_power_in_India  http://www.conserve-energy future.com/Disadvantages_WindEnergy.php
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  Thank you