Solar Power Transmission System

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A technical paper presentation
on

POWER TRANSMISSION VIA SOLAR POWER SATELLITE
Presented by:

iTECHNOFEST 2010

SRI VENKATESHWARA COLLEGE OF ENGINEERING AND TECNOLOGY, CHITTOOR

FROM
DEPARTMENT of ELECTRICAL & ELECTRONICS ENGINEERING,
[pic] [pic] G.PULLAREDDY COLLEGE OF ENGINEERING
KURNOOL-518002, A.P
(
POWER TRANSMISSION VIA
Solar Power Satellite
P.CHANIKYA AND M.ISHAQ BASHA III YEAR EEE GPREC KNL

Abstract—This paper reports on the futuristic advances in power transmission through microwaves. Sun is a limitless source of Energy. A Space Power Satellite (SPS) orbiting round the earth traps solar energy and generates electric power using photovoltaic cells of sizable area. SPS transmits the generated power via a microwave beam to the receiving Rectenna site on earth. A RECTENNA (RECtifying anTENNA) comprises of a mesh of dipoles and diodes for absorbing microwave energy from a transmitter and converts it into electric power. We can in fact directly convert solar energy into electrical energy with the use of solar cells, but this process will be affected by day/night cycles, weather, and seasons. We are aware of the fact that light is an electromagnetic wave. Light rays never diffuse in space & if by any means these rays can be transmitted from space to earth then it will be a perfect solution for our desired need of 24 hrs power supplies. The 21st century endeavors and approaches for establishing human race in space can come true only if the basic requirement of human beings is satisfied i.e. 24hrs power, which can be efficiently served by rectenna. This paper presents the concept & evolution of satellite power system, SPS2000 (a research work by ISAS) and the impact of Microwave Power Transmission (MPT) on space plasma. In near future conventional power sources cannot meet total power demand, for which SPS is a best solution.

INTRODUCTION

A

major problem facing Planet Earth is provision of an adequate supply of clean energy. It has been that we face "...three simultaneous challenges -- population growth, resource consumption, and environmental degradation -- all converging particularly in the matter of sustainable energy supply." It is widely agreed that our current energy practices will not provide for all the world's peoples in an adequate way and still leave our Earth with a livable environment. Hence, a major task for the new century will be to develop sustainable and environmentally friendly sources of energy. Projections of future energy needs over this new century show an increase by a factor of at least two and one Half, perhaps by as much as a factor of five. All of the scenarios from references indicate continuing use of fossil sources nuclear, and large hydro. However, the greatest increases come from "new renewable" and all scenarios show extensive use of these sources by 2050. Indeed, the projections indicate that the amount of energy derived from new renewable by 2050 will exceed that presently provided by oil and gas combined. This would imply a major change in the world's energy infrastructure. It will be a Herculean task to acquire this projected amount of energy. This author asserts that there are really only a few good options for meeting the additional energy needs of the new century in an environmentally acceptable way. One of the so-called new renewable on which major reliance is almost certain to be placed is solar power. Solar power captured on the Earth is familiar to all. However, an alternative approach to exploiting solar power is to capture it in space and convey it to the Earth by wireless means. As with terrestrial capture, Space Solar Power (SSP) provides a source that is virtually carbon-free and sustainable. As will be described later, the power-collecting platforms would most likely operate...
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