This document provides an overview of solar power satellites and wireless power transmission. It discusses the concept of wireless power transmission as envisioned by Nikola Tesla in the late 1890s. Solar power satellites are presented as an alternative to ground-based solar power due to benefits like continuous energy availability and higher solar energy potential in space. The document describes the key components of solar power satellites, including solar panels, a spacetenna to transmit microwave energy, and rectennas on the ground to receive the energy. Advantages like a renewable energy source without emissions are discussed alongside challenges like high costs.

1. GUIDED BY:- BY:-
RASMI RANJAN PANIGRAHI RAHUL KUMAR
ASSISTANT PROFESSOR EEE
ELECTRICAL DEPARTMENT 1301292606 1
GANDHI ENGINEERING COLLEGE
BHUBNESHWAR

2.  Brief study of WIRELESS POWER TRANSMISSON
 Introduction to SOLAR POWER SATELLITE
 How SOLAR POWER SATELLITE works
 Overview of system design
 Advantages & Disadvantages
 Conclusion
 References
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3.  The transmission of energy from one place to another
without using wires.
 Conventional energy transfer is using wires. But the
wireless transmission is made possible by using various
technologies.
 This Phenomena is also known as ‘Witricity’.
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4.  Nikola Tesla in late 1890’s gave the concept
of Witricity.
 He was able to transfer energy from one coil
to another coil.
 He managed to light 200 lamps from a
distance of 40 km.
 The idea of Tesla is taken into research after
100 years by a team led by Marin Soljacic
from MIT.
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5.  As per the studies , most electrical energy transfer is
through wires and most of the energy loss is during
transmission through wires.
 On an average , the loss is more than 30% in world.
 In India, the loss exceeds 40%.
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6.  Reliable
 Efficient
 Low maintenance cost
 Can be used for short range as well as long range
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7.  Human beings or other objects placed between the
transmitter and receiver do not hinder the transmission of
power.
 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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8. 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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9.  Ground based power transmission (GPT)
 Space based power transmission (SPT)
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10. SPT is preferred over GPT 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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11.  The SPS is a gigantic satellite designed as an electric
power plant orbiting the geostationary earth orbit.
 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.  Increasing global energy demand.
 Environmental problems due to fossil fuels.
 To overcome energy crisis.
 Overcome day and night effect and other factors such
as cloud.
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15.  Solar Panel
 Spacetenna (antenna on satellite)
 Rectenna (rectifying antenna)
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16.  Set of solar photovoltaic modules electrically
connected and mounted on a supporting structure.
 Photovoltaic module is a packaged , connected
assembly of solar cells.
 Solar panels use photons(light energy) from sun to
generate electricity through photovoltaic effect.
 Solar panels were first used in space in 1958.
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17.  Spacetenna is a triangular prism with a length of 800 m
and sides of 100 m.
 The faces of prism are embedded with photovoltaic cells
.These cells would convert solar energy into electricity,
which in turn power onboard , Microwave Generator.
 The microwave thus produced travels through
atmosphere & collected by RECTENNAS on earth.
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18.  An antenna comprising a mesh of dipoles and diodes for
absorbing microwave energy from a transmitter and
converting it into electric power.
 Microwaves are received with about 85% efficiency.
 95% beam will fall on the Rectenna.
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20.  The realization of the SPS concept holds great promises
for solving energy crisis.
 No fuel required.
 Unlimited energy resource.
 Zero Carbon-dioxide emission.
 Solar energy can be more efficiently collected in space.
 Elimination of plant and wildlife interference.
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21.  Interference with communication satellites.
 The entire structure is massive.
 High cost and require much time for construct
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22.  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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23.  Ralph H. Nansen solar power industries “WIRELESS
POWER TRANSMISSION :The key to solar power
satellites” IEEE AES system magazine , January 1996.
 Kaya, N., S. Ida, Y. Fujino, and M. Fujita, “Transmitting
antenna system for airship demonstration of Space Energy
and Transportation” IEEE Vol.1.
 Transmission Technology”, IEEE Microwave Magazine,
December 2002.
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