What is kite energy, how its work, its future scope and How to generate kite energy.

1. KITE ENERGY
PRESENTED BY: Gaurav singh

2. PRESENTATION OVERVIEW
 Introduction
 Energy sources
 Limits of present renewable technologies
 Cross wind kite power
 Constructional details
 Operating principles
 Limitations
 Advantages
 Comparison with other renewable resources
 Summary
 References

3. INTRODUCTION
 Developed in Italy that takes power from high altitude winds.
Kite-Gen organization was developed in Italy for adopting green
energy concept.
Kite – Gen initiated its first project called “LADDER MILL” that could
generate 50Kw of power.
Renewable energy is very low in cost.
It does not have much negative impact on the environment.
Airborne wind energy replaces the traditional structure of wind turbine
by Kites tethered to ground.

4. KITE-GEN
 The first design of KITEGEN is a small scale prototype.
 The electric actuators which hold the kite lines are fixed with respect to
the ground

5. NEED FOR ENERGY KITE
 Provides 80% of electricity
 Environmental conservation
 Renewable energy source
 Abundantly Available
 Less Area required

6. CROSSWIND KITE POWER
Traditional wind turbine is replaced by Energy
Kite, a wind turbine with a rotor supported in
the air.
Avoids the expense of tower construction.
The Kite tethered to ground, flies in a crosswind
direction.
 After achieving certain altitude this Kite obtains
a circular trajectory.
The power generated by energy Kite is
transmitted to ground simultaneously.

7. CONSTRUCTIONAL DETAILS
 THREE MAIN COMPONENT
KITE
TETHER
GROUND STATION

8. Kite
The main component of the power
generation system.
Material used must be light as well as
strong to sustain various types of forces
acting on it.
Consists of small turbines that generate
power by using the velocity of wind.
Increase in number of rotors increases
power output.

9. Tether
Acts as a link for Kite to ground contact.
Used to transmit energy generated by energy Kite to the ground station.
Made of thick Aluminium wires surrounded by a high strength composite fibre
covering.
When tether length exceeds a limit, it may lead to minor instability of the system.
To overcome this and to get efficient power generation at short tethering distance,
multiple Kites are used.

10. Ground station
Holds the tether.
Used as a resting place for
the energy Kite, when not
in flight.
Occupies less ground
space.
The ground station strength
decides the length up to
which the Kite can be
tethered.

11. PRINCIPLE (kite energy)
RE-TRACTION
PHASE
POWER
PHASE
TRACTION
PHASE

12. YO-YO CONFIGURATION

13. OPERATING PRINCIPLE
• Power generated by the energy kite can be given by,
where,
A- area of the kite wing
CL- lift coefficient
CD- drag coefficient
VW- velocity of wind
• A ratio of lift coefficient to that of drag coefficient is the drag ratio.
• Initially the Kite is taken to a considerable height by the on board rotors attached to the Kite, which are
powered by electricity from the ground station.
• When it reaches at suitable altitude, the Kite gets into its circular trajectory.

14. Cont.
• After this stage the same rotor generates energy when Kite gets into circular
motion.
• Tether length plays an important role in setting diameter of rotation of the
Kite.
• The total power Pwind that a flying wing extracts from this wind field is given
by
where,
Fa- total aerodynamic force that the wing experiences
γ- angle between the direction of this force and the wind

15. CONCLUSION
 Wind Power from Kites is a potential renewable energy
technology
High‐altitude wind power using tethered wind turbine
devices has the potential to open up a new wind
resource in areas that are not served by conventional
turbines.

16. THANK YOU