wireless power transmission via solar power satellite

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wireless power transmission via solar power satellite

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wireless power transmission via solar power satellite

  1. 1. JODHPUR INSTITUTIONS OF ENGINEERING AND TECHNOLOGY
  2. 2. • The transmission of energy from one place to anowithout using wires.• Conventional energy transfer isusing wires• But, the wireless transmission is made possible byvarious technologies…..
  3. 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 notoperate
  4. 4.  Tesla was able to transfer energy fromone coil to another coil He managed to light 200 lamps from adistance of 40km The idea of Tesla is taken in to research after 1by a team led by Marin Soljačić from MIT. Tis named as „WiTricity‟.
  5. 5. i. As per studies, most electrical energy transfethrough wires.ii. Most of the energy loss is during transmissioniii. On an average, more than 30%iv. In India, it exceeds 40%
  6. 6. • Reliable• Efficient• Fast• Low maintenance cost• Can be used for short-range or long-rang
  7. 7. • Human beings or other objects placed between thtransmitter and receiver do not hinder the transof power.• Magnetic field tend to interact very weakly withbiological tissues of the body, and so are not pcause any damage to any living being.
  8. 8. There are mainly 3 major types of wireless energy transfeShort range – INDUCTIVE COUPLINGMedium range – RESONANT INDUCTIONLong rangepower transfer – ELECTROMEGNETIC WAVE
  9. 9. 1) Ground based power transmission2) Space based power transmission
  10. 10. But Space-based power transmission is preferredbased power transmissionGround 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 it‟s 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.
  11. 11. Solar Power Satellites (SPS) have proposed to collect solaenergy in space and beam it down to the Earth.
  12. 12. • 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 threetimes 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
  13. 13. Four basic steps involved in the conversion of solar energyelectricity and delivery are:Capture solar energy in space andconvert it to electricityTransform the electricity to radiofrequency energy and transmit it to EarthReceive the radio frequency energy on Earth andconvert it back to electricityProvide the electricity to the utility grid
  14. 14.  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 i
  15. 15. 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Interference with communication satellites

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