## Saturday, July 20, 2013

### PowerPoint Presentation On WIND ENERGY SYSTEM

PPT On WIND ENERGY SYSTEM

WIND ENERGY SYSTEM  Presentation Transcript:
1.ON WIND ENERGY SYSTEM & VARIOUS CONTRL  STRATEGIES

2.INTRODUCTION OF WECS
Fastest growing segment among other renewable energy sources .Wind energy is clean, geographically available, low cost, and useful in rural areas.

3.COMPONENTS OF WECS

4.CLASSIFICATION OF WECS

5.COMPARISION
Horizontal  axis wind turbine
Comprises Two Or More Blades That Are Designed To Best Aerodynamics
Includes A Yaw Mechanism That Turns The Rotor Blades To Face Wind Directions
Due To High Efficiency & easy maintenance, This Is Most Popular
Vertical axis wind turbine
Able To Capture Wind Independently From Wind Directions.
Due To Less Efficiency, Complicated Maintenance, And Large Land Occupation, The Use Of This Converter Has Falling Down During Last Decades

6.OPERATING AND DESIGN PRINCIPLES OF WIND TURBINE
A wind turbine obtains its power input by converting the force of the wind into a torque (turning force) acting on the rotor blades.
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, i.e. its mass per unit of volume. In other words, the "heavier" the air, the more energy is received by the turbine.

7.The rotor area determines how much energy a wind turbine is able to harvest from the wind.
Since the rotor area increases with the square of the rotor diameter, a turbine which is twice as large will receive 22 = 2 x 2 = four times as much energy
To be considered a good location for wind energy, an area needs to have average annual wind speeds of at least 12 miles per hour.

8. DESIGN OF WECS
A WECS captures wind energy and then uses a generator to convert it to electrical energy
The design of a WECS is an integral part of how efficient it will be.
When designing a WECS, one must decide on the size of the turbine, and the size of the generator

9.Wind Turbines
LARGE TURBINES: Able to deliver electricity at lower cost than smaller turbines, because foundation costs, planning costs, etc. are independent of size.
In areas where it is difficult to find sites, one large turbine on a tall tower uses the wind extremely efficiently.

10.SMALL TURBINES:
Local electrical grids may not be able to handle the large electrical output from a large turbine, so smaller turbines may be more suitable.
High costs for foundations for large turbines may not be economical in some areas.
Landscape considerations