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31-01-2012, 08:16 PM
Post: #1
solar power satellite ppt
please get a ppt on solar power satellite
01-02-2012, 10:50 AM
Post: #2
RE: solar power satellite ppt
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15-11-2012, 11:06 AM
Post: #3
RE: solar power satellite ppt
Solar Power Satellite



.pptx  Solar Power Satellite.pptx (Size: 1.23 MB / Downloads: 80)

Introduction

Solar Power Satellite or SPS, is
a proposed satellite built in
geostationary orbit that
captures solar energy from sun
and transmitted via a coherent
microwave or laser beam to an
Earth receiver where it is
converted into electricity.
Sunlight captured in space is many times more effective in providing continuous base load power compared to a solar array on the Earth

Necessity:

The demand for energy worldwide has increasing by 100% or almost doubled in every decade.
The world’s main source of power is still generated by fossil fuels which is limited(75% of the total power globally).
This causes large amount of pollution.
And pollution free renewable sources also don’t have that much potential .
Hence we need clean and reliable power source having potential for future.
And SPS is the only solution know to human.

SPS system with MPT:

Photovoltaic cells (collector):
PV cells converts the sun light into d.c. current.
Magnetron (Transmitter/microwave generator):
The microwave tube, such as a cooker-type magnetron, can generate and amplify high power microwave(over kW) with a high voltage (over kV) imposed.
Especially, magnetron is very economical.

Advantages:

All time power availability
Works regardless of cloud cover, daylight, or
wind speed
Has massive potential
Pollution free
No fuel required
No hazardous waste product
Much lighter, low maintenance structures
Saves power transmission cost on ground level.

Disadvantages:

High initial cost
Need long time for construction
Maintenance of SPS is expensive and challenging
Risk of interference with communication satellite
Radiation hazards associated the system
Risk involved with malfunction
Can be used as a weapon.

Conclusion:

The increasing global energy demand is likely to continue for many decades.
It has been predicted that by 2030, the world needs 30TW power from renewable energy sources and solar energy alone has the capability of producing around 600TW.
Though its initial cost is very high, after some technical advancements it can be brought up to affordable level.
Space solar power can completely solve our energy problems long term.
The sooner we start and the harder we work, the shorter "long term" will be.
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