Date post: | 11-Apr-2017 |
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CONTROL SCHEME FOR A STAND-ALONE WIND ENERGY
CONVERSION SYSTEM
SINDHURA COLLEGE OF ENGINEERING AND TECHNOLOGY Medipally road, Ramagundam, NTPC, Godavarikhani
CH.SHASHANK 13B71A0203
Need of wind energy
Present energy need heavily relies on the conventional sources.
But the limited availability and steady increase in the price of
conventional sources has shifted the focus toward renewable
sources of energy.
Of the available alternative sources of energy, wind energy is
considered to be one of the proven technologies.
wind energy conversion system (WECS) is nowadays
deployed for meeting both grid-connected and stand-alone
load demands.
Many stand alone loads are powered by renewable source
of energy.
INTRODUCTION
Operating principle
• Wind turbine operate on a simple principle. The
energy in the wind turns the blades around a rotor.
The rotor is connected to the main shaft which spins a
generator to create electricity
Wind turbine configurations
Horizontal axis variety
Vertical axis variety
Vertical axis varietyHorizontal axis variety
Turbine ranges
• Small turbines, below 100 KW used forHomesTelecommunication dishesWater pumping
• Turbine range in 100KW to as large as several MW. large wind turbines are group together into wind farms, which provide bulk power to the electrical grid.
Wind power is currently being used extensively in countries like
USA DENMARK SPAIN
INDIA GERMANY
BLOCK DIAGRAM REPRESENTATION
Horizontal axis wind turbine
i) Towerii) Rotor system
iii) Generator iv) wind wane
v) Control system vi) Yaw
vii) Braking
The main components of a wind turbine can be classified as
TOWER NBB TOWER• It is the most expensive element of the wind
turbine system.• Towers are constructed with steel or concrete.• Cheaper and smaller towers may be
supported by guy wires.• The tower should be designed to withstand
gravity and wind loads.
TOWER CLASSIFICATIONS
Wind turbine parameters under the variation of wind speed
State wise installed capacity in India
ADVANTAGES• Environmentally
Friendly• Reduces Fossil Fuel
Consumption• Wind Energy is Free• Small Footprint• Industrial & Domestic
Installations
• Remote Power Solution• Wind Technology
Becoming Cheaper• Low Maintenance• Job Creation
DISADVANTAGES• The Wind Fluctuates
• Installation is Expensive
• Threat to Wild life
• Noise Pollution
APPLICATIONS Applications of wind energy can be used for
small households, national networks.
It is accepted in a wide range of uses because it is renewable, so it is mostly accepted over coal and fossil fuels.
CONCLUSION However, wind flow by nature is not continuous.
In order to meet the load requirement at all instances, suitable storage technology is used as backup
To rectify the random characteristics of wind flow the WECS is interfaced with the load by suitable controllers.
QUERIES ?
THANK YOU