20-09-2012, 04:58 PM
SOLAR POWER SATELLITE VIA MICROWAVEPOWER TRANSMISSION
SOLAR POWER SATELLITE.ppt (Size: 686 KB / Downloads: 52)
INTRODUCTION
Solar Power Satellites(SPS) converts solar energy in to micro waves and sends that microwaves in to a beam to a receiving antenna on the Earth for conversion to ordinary electricity.
Solar Power Satellites is known by a variety of other namessuch as Satellite Power System, Space Power Station, Space Power System Solar Power Station, Space Solar Power Station etc.
WHY SPS
Increasing global energy
It will be affected by the day & night effect and other factors such as clouds.
The solar energy is collected and converted in to electricity which is then converted to a highly directed microwave beam for transmission.
SPS –BACKGROUND
The concept of a large SPS that would be placed in geostationary orbit was invented by Peter Glaser in 1968.
The central feature of this concept was the creation of a large scale power infrastructure in space, consisting of about 60 SPS, delivering a total of about 300GW.
The microwaves would be beamed to the Earth’s surface, where they would be received and converted back into electricity by a large array of devices known as rectifying antenna
SPS-A GENERAL IDEA
Solar Power Satellites would be located in the geosynchronous orbit.
The solar energy collected by an SPS would be converted into electricity, then into microwaves.
Each SPS would have been massive; measuring 10.5 km long and 5.3km wide or with an average area of 56 sq.km.The surface of each satellite would have been covered with 400 million solar cells.
MICROWAVE POWER TRANSMISSION IN SPS
The microwave transmission system as envisioned by NASA and DOE would have had three aspects:
The conversion of direct power from the photovoltaic cells, to microwave power on the satellites on geosynchronous orbit above the Earth.
The collection of the microwave energy and its conversion into electrical energy at the earth’s surface.
ADVANTAGES
The power could be directed to any point on the earth’s surface
The zero gravity and high vacuum condition in space would allow much lighter, low maintenance structures and collectors
No moving parts.
No fuel required.
No waste product
The full solar irradiation would be available at all times expect when the sun is eclipsed by the earth [14].
CONCLUSION
The SPS will be a central attraction of space and energy technology in coming decades.
Another important area of technological development will be the reduction of the size and weight of individual elements in the space section of SPS.
Technical hurdles will be removed in the coming one or two decades. Finally, we look forward to universal acceptance of the premise the electromagnetic energy is a tool to improve the quality of life for mankind.