Wireless Electrical Power Transmission

Abstract

Sandip B. Shrote E & Tc Deptt. SGREFS, COEM, Ahmednagar Vrushali P. Wani Elex Deptt SGREFS, COEM Ahmednagar This technology power can be transferred through this free space by microwave. The wireless power transmission by focus the electromagnetic beam of microwave or laser radiation is most modern type of power engineering for different places in terrestrial application and present type there is a great number of such application and one of the most interesting and important application is related to global ground rescue system. Recent increases in population and the efforts to increase the quality of life have put a stress on global resources and have been accompanied by major environmental problems. A prime example is global warming caused by the burning of fossil fuels in both the developed and rapidly developing countries. As an effort toward the solution of this problem, the Kyoto Protocol was signed in 1998. The protocol came into effect in February of 2005 and requires most of the developed nations to substantially reduce greenhouse gas emissions. This must take effect between 2008 and 2012. The Solar Power Satellite (SPS) offers the potential of an electrical power source that is available 24 hours a day and is essentially free of CO2 emission. The satellite occupies a geostationary orbit. It collects solar energy in space, converts it to electrical energy which is transmitted to the ground using microwaves. Researchers in the United States, Japan and Europe have conducted research on SPS, proposing a range of systems. A typical SPS system would generate 1 GW of power which would be transmitted to the ground at gigahertz frequencies. In such a system, the solar energy is converted to direct currents by the solar cells and the direct currents in turn are used to power microwave generators. The generators feed a highly directive satellite-borne antenna which beams the energy to the ground. The system would use a phased-array transmitting antenna with a large number of antenna elements and a diameter of the order of 1-2 km. On the ground a rectifying antenna (rectenna) converts the microwave energy from the satellite to direct current, which after suitable processing, is fed to the terrestrial power grid. The full text of the article is not available in the cache. Kindly refer the IJCA digital library at www.ijcaonline.org for the complete article. In case, you face problems while downloading the full-text, please send a mail to editor at editor@ijcaonline.org