solar power satellite
DESCRIPTION
Its about Solar Power Satellite.. We wiil meet soon as world is running out of fossil fuelsTRANSCRIPT
A Seminar On
Wireless Power Transmission via Solar Power Satellite
Submitted By: Priyanka JainB.E. Final YearE/No : 10/05821Roll No : 2221432
Guided By:Dr. S.S. MehtaProfessorElectrical Engineering
Department Of Electrical Engineering Faculty Of Engineering M.B.M. Engineering College, J.N.V. University, Jodhpur (Raj.) 2014
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WPT via Solar Power Satellite
Overview
History Wireless Power Transmission
Solar Power Satellite
Visualization Challenges Conclusion
WPT via Solar Power Satellite
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History…
Nikola Tesla in late 1890s, Pioneer of induction techniques.
His vision for “World Wireless System”. In 1940s ability to convert energy to microwaves was developed. In 1964 William C. Brown demonstrated a Rectenna.
WPT via Solar Power Satellite
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Solar Power Satellite In 1968 idea for solar power satellites was proposed
by Peter Glaser. Between 1978 and 1981, the Congress authorized
the Department of Energy (DoE). In 1999, NASA's Space Solar Power Exploratory
Research and Technology program (SERT) was initiated.
On Nov 2, 2012, China proposed space collaboration with India that mentioned SBSP.
WPT via Solar Power Satellite
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Space Solar
Power Is preferred
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Why??
WPT via Solar Power Satellite
Space gets full power 24 hours a day
• 3X or more Watt-hours per day per peak watt • No storage
required for nighttime power
Space gets full power 7 days a week
• Space gets full power 52 weeks a year
• No long winter nights, no storms, no cloudy seasons
• Space delivers power where it’s needed
Best ground solar sites are rarely near users
• Space takes up less, well, space
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WPT via Solar Power Satellite
Advantages over Earth based solar power
Earth Based Solar Power
Space Based Solar Power
More intense sunlight
An SPS would be illuminated over 99% of the time
No need for costly storage devices.
Waste heat is radiated back into space
Less intense sunlight
Costly storage devices needed
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WPT via Solar Power Satellite
Solar Power Satellite
Solar Power Satellites (SPS) have proposed to collect solar energy in space and beam it down to the Earth.
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WPT via Solar Power Satellite
How SPS Works??
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WPT via Solar Power Satellite
Four basic steps involved in the conversion of solar energy to electricity and delivery are:
Step 4
Provide the electricity to the utility grid
Step 3Receive the radio frequency energy on Earth and convert it back to electricity
Step 2Transform the electricity to radio frequency energy and transmit it to Earth
Step 1Capture solar energy in space and convert it to electricity
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WPT via Solar Power Satellite
Capture solar energy in space
Photovoltaic cellSolar radiation can be more efficiently collected in space, where it is roughly three times stronger than on the surface of the Earth. Most of these systems would utilize photovoltaic (PV) cells similar to those on Earth-based systems.
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WPT via Solar Power Satellite
“An antenna is an electrical device which converts electric power into radio waves. The transmitting antenna on the horizontal under-surface faces the Earth,
and the other two sides of the prism carry solar arrays. The Microwave thus produced Travels through Atmosphere & is collected by
RECTENNAS on Earth. The Spacetenna has a square shape whose dimension is 132 meters by
132 meters and which is regularly filled with 1936 segments of sub array. There will be about 2.6 million antenna elements in the spacetenna.
SPACETENNA: (THE ANTENNA ON SATELLITE)
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WPT via Solar Power Satellite
“An antenna comprising a mesh of dipoles and diodes for absorbing microwave energy from a transmitter and converting it into electric power.”
Microwaves of 2.45 GHz frequency are used to transmit power from the satellite to the rectenna.
Microwaves are received with about 85% efficiency.
Diameter is around 5km .
95% of the beam will fall on the rectenna.
RECTENNNA :(RECTIFYING ANTENNA)
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WPT via Solar Power Satellite
Rectenna Issues
Size• Miles across
Location
• Aesthetic• Near population
center
Health and
environmental side
effects
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WPT via Solar Power Satellite
5,000 MW Receiving Station (Rectenna). This station is about a mile and a half long.
5,000 MW Receiving Station (Rectenna). This station is about a mile and a half long.
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WPT via Solar Power Satellite
Overview of System Design
Possible Designs
Visualizing Space Solar Power Project in Development in Japan.
SunSat Design Competition, an international contest with prizes. The Competition is intended to generate imaginative and plausibly workable designs for the next-generation space satellite systems.
Goal is to build a low cost demonstration model by 2025.
8 Countries along the equator have agreed to be the site of a rectenna.
If microwave beams carrying power could be beamed uniformly over the earth they could power cell phones.
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WPT via Solar Power Satellite
Challenges Geosynchronous satellites would take up large sections of
space
Interference with communication satellites
Possible health hazards Effects of long term exposure Exposure is equal to the amount that people receive
from cell phones and microwaves
Location The size of construction for the rectennas is massive
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WPT via Solar Power Satellite
This technology is still in development but with support it will become operation of reality providing a
new source of clean energy.
“ Will be a boon as we are running out of fossil fuels”.
Conclusion
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WPT via Solar Power Satellite
References[1] Matsumoto, H., “Research on Solar Power Station and Microwave Power Transmission in Japan : Review and Perspectives”, IEEE Microwave Magazine, December 2002.[2]Shinohara, N., J. Fujiwara, and H. Matsumoto, “Development of Active Phased Array with Phase-controlled Magnetrons”, Proc. ISAP2000, Fukuoka, vol.2, 2000.[3]www.spacefuture.com[4]Space journal at OHIO -issue18.[5]http://www.nss.org/settlement/ssp/[6]www.powersat.com [7]http://www.factindex.com/m/mi/microwave_power_transmission.html[8]Space Power, SPS Timeline,<http://www.spacefuture.com/power/timeline.shtml[9]http://www.fact-index.com/m/mi/microwave_power_transmission.html
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Thank You!!