it is a very good slide

1. kalam institute of technology, BAM.
WIRELESS POWER TRANSMISSION
VIA
SOLAR SATELLITE
Presented by :
Saumya ranjan Mahapatra
Dept.Of EEE .
Regd No:1221305087
Under the guidance of:
Mr. Harekrushna panigrahi
SEMINAR ON

2. kalam institute of technology, BAM.
CONTENTS
• Introduction Wireless power transmission
• Solar power system
• How Solar power system works
• Flow chart of solar power transmission
• Overview of system design
• Advantages & Disadvantages
• Conclusion
• References
Dept.Of EEE . Regd No:1221305087

3. kalam institute of technology, BAM.
Introduction Wireless power transmission
o The transmission of energy from one place
to another without using wires.
o Conventional energy transfer is using
wires.
o But the wireless transmission is made
possible by using various technologies.
o This Phenomena is also known as
‘Witricity’.
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4. kalam institute of technology, BAM.
WHY NOT WIRES ?????
o As per the studies , most electrical energy transfer is through
wires.
o Most of the energy loss is during transmission.
o On an average , more than 30%.
o In India, it exceeds 40%.
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5. kalam institute of technology, BAM.
WHY WIRELESS POWER TRANSMISSION
????
o Reliable
o Efficient
o Fast
o Low maintenance cost
o Can be used for short range as well as
long range
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6. kalam institute of technology, BAM.
IS WIRELESS POWER TRANSMISSION SAFE ????
o Human beings or other objects placed between the transmitter
and receiver do not hinder the transmission of power.
o Magnetic field tend to interact very weakly with the
biological tissues of the body, and so are not prone to cause
any damage to any living being.
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7. kalam institute of technology, BAM.
BASICS OF WIRELESS POWER
TRANSMISSION
There are mainly 3 types of wireless energy transfer
1.Short Range –Inductive Coupling
2.Medium range-Resonant Induction
3.Long Range Power Transfer-Electromagnetic
wave
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8. kalam institute of technology, BAM.
TYPES OF WIRELESS POWER
TRANSMISSION
 Ground based power transmission
 Space based power transmission
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9. kalam institute of technology, BAM.
Space based power transmission is preferred over
ground based power transmission because :
1.Energy is available 24 hours a day.
2.No storage required for nighttime power.
3.The energy available in space is 4 -5 times than on
earth.
4.No long winter nights, no storms, no cloudy seasons.
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10. kalam institute of technology, BAM.
SOLAR POWER SATELITE
Solar Power Satellites (SPS) have proposed to collect solar
energy in space and beam it down to the Earth.
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11. kalam institute of technology, BAM.
INTRODUCTION TO SOLAR POWER
SATELITE
o The SPS is a gigantic satellite designed as an electric power
plant orbiting the geostationary earth orbit.
o It consists of mainly three segments solar energy collector to
convert the solar energy into DC electricity, DC to microwave
converter and larger antenna array to beam down the
microwave power to the ground.
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12. kalam institute of technology, BAM.
WHY TO USE SOLAR POWER SYSTEM
????
o Increasing global energy demand.
o Environmental problems due to fossil fuels.
o To overcome energy crisis.
o Overcome day and night effect and other factors such as
cloud.
o There is no air in space, so the satellites would receive
somewhat more intense sunlight, unaffected by weather.
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13. kalam institute of technology, BAM.
HOW SOLAR POWER SYSTEM WORKS
????
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14. kalam institute of technology, BAM.
Dept.Of EEE . Regd No:1221305087 PAGE-12

15. kalam institute of technology, BAM.
BASICS STEPS INVOLVED IN THE
CONVERSION
Capture solar energy in space and
convert it to electricity
Transform the electricity to radio
frequency energy and transmit it to
Earth
Receive the radio frequency energy on Earth
and convert it back to electricity
Provide the electricity to the utility grid
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16. kalam institute of technology, BAM.
DISTRIBUTION AFTER RECEIVING BY GROUND BASED RECEIVER
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17. kalam institute of technology, BAM.
FLOW CHART OF WIRELESS POWER
TRANSMISSION VIA SOLAR SATELITE
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18. kalam institute of technology, BAM.
OVERVIEW OF SYSTEM DESIGN
 Solar Panel
 Spacetenna (antenna on satellite)
 Rectenna (rectifying antenna)
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19. kalam institute of technology, BAM.
SOLAR PANEL
o Set of solar photovoltaic modules electrically connected and
mounted on a supporting structure.
o Photovoltaic module is a packaged , connected assembly of
solar cells.
o Solar panels use photons(light energy) from sun to generate
electricity through photovoltaic effect.
o Solar panels were first used in space in 1958.
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20. kalam institute of technology, BAM.
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21. kalam institute of technology, BAM.
SPACETENNA(ANTENNA ON SATELLITE)
o Spacetenna is a triangular prism with a length of 800 m and
sides of 100 m.
o The faces of prism are embedded with photovoltaic cells
.These cells would convert solar energy into electricity,
which in turn power onboard , Microwave Generator.
o The microwave thus produced travels through atmosphere &
collected by RECTENNAS on earth.
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22. kalam institute of technology, BAM.
RECTENNA(RECTIFYING ANTENNA)
o An antenna comprising a mesh of dipoles and diodes for
absorbing microwave energy from a transmitter and
converting it into electric power.
o Microwaves are received with about 85% efficiency.
o 95% beam will fall on the Rectenna.
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23. kalam institute of technology, BAM.
ADVANTAGES
 Unlimited energy resource
 Energy delivered anywhere in the world
 Zero fuel cost
 Zero CO2 emission
 Minimum long-range environmental impact
 Solar radiation can be more efficiently collected in space
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24. kalam institute of technology, BAM.
DISADVANTAGES
Launch costs
 Capital cost even given cheap launchers
Would require a network of hundreds of satellites
Possible health hazards
The size of the antennas and rectennas
Geosynchronous satellites would take up large sections of
space
Interference with communication satellites
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25. kalam institute of technology, BAM.
CONCLUSION
The wireless power transmission is More reliable than ground
based solar power. In order for SPS to become a reality several
things have to happen:
1.Government Support
2.Cheaper launch prices
3.Involement of private sectors
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26. kalam institute of technology, BAM.
REFERENCES
• www.google.com
• www.wikipedia.com
• Ralph H. Nansen solar power industries “WIRELESS
POWER TRANSMISSION :The key to solar power
satellites” IEEE AES system magazine , January 1996.
• Brown, W. C., “Beamed microwave power transmission and
its application to space”, IEEE Trans. Microwave Theory
Tech.,vol.40.
Dept.Of EEE . Regd No:1221305087

27. kalam institute of technology, BAM.

28. kalam institute of technology, BAM.
ANY QUESTION
????