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Wirless power tranmission via

Nov 16, 2014

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  • 1. ELECTRICAL & ELECTRONICS ENGINEERING RAJ KUMAR GOEL ENGINEERING COLLEGE

2. REPRESENTED BY :- AJAY KUMAR PATEL GUIDED BY :- PRIYANK AGRAWAL WIRELESS POWER TRANSMISSION VIA SOLER POWER SATELLITE 3. Nikola Tesla in late 1890s Pioneer of induction techniques His vision for World Wireless System The 187 feet tall tower to broadcast energy All people can have access to free energy Due to shortage of funds, tower did not operate 4. Tesla was able to transfer energy from one coil to another coil He managed to light 200 lamps from a distance of 40km The idea of Tesla is taken in to research after 100 year by a team led by Marin Soljai from MIT. The proje is named as WiTricity. 5. 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.. 6. i. As per studies, most electrical energy transfer is through wires. ii. Most of the energy loss is during transmission iii. On an average, more than 30% iv. In India, it exceeds 40% 7. Reliable Efficient Fast Low maintenance cost Can be used for short-range or long-range. 8. 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. 9. There are mainly 3 major types of wireless energy transfer:-- Short range INDUCTIVE COUPLING Medium range RESONANT INDUCTION Long range power transfer ELECTROMEGNETIC WAVE 10. 1) Ground based power transmission 2) Space based power transmission 11. But Space-based power transmission is preferred over Ground based power transmission Ground is (obviously) cheaper per noontime watt, but: Space gets full power 24 hours a day 3X or more Watt-hours per day per peak watt No storage required for nighttime power Space gets full power 7 days a week no cloudy days Space gets full power 52 weeks a year No long winter nights, no storms, no cloudy seasons Space delivers power where its needed Best ground solar sites (deserts) are rarely near users Space takes up less, well, space Rectennas are 1/3 to 1/10 the area of ground arrays Rectennas can share land with farming or other uses. 12. Solar Power Satellites (SPS) have proposed to collect solar energy in space and beam it down to the Earth. 13. There is no air in space, so the satellites would receive somewhat more intense sunlight, unaffected by weather. The SPS concept is simpler than most power systems here on earth. Solar radiation can be more efficiently collected in space, where it is roughly three times stronger than on the surface of the Earth and it can be collected 24 hours per day (since there are no clouds or night in high Earth orbit). SPS does not use up valuable surface area on the Earth 14. Four basic steps involved in the conversion of solar energy to electricity and delivery are: Capture solar energy in space and convert it to electricity Transform the electricity to radio frequency energy and transmit it to Earth Receive the radio frequency energy on Earth and convert it back to electricity Provide the electricity to the utility grid 15. Unlimited energy resource Energy delivered anywhere in the world Zero fuel cost Zero CO2 emission Minimum long-range environmental impact Solar radiation can be more efficiently collected in space 16. Launch costs Capital cost even given cheap launchers Would require a network of hundreds of satellites Possible health hazards The size of the antennas and rectennas Geosynchronous satellites would take up large sections of space Interference with communication satellites