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JODHPUR INSTITUTIONS OF ENGINEERING AND TECHNOLOGY

JODHPUR INSTITUTIONS OF ENGINEERING AND TECHNOLOGY. ELECTRICAL ENGINEERING. WIRELESS POWER TRANSMISSION VIA SOLAR POWER SATELLITE. GUIDED BY:- PROF. CHANDRA SHEKHER. BY:- ABHISHEK SUNDRANI. WIRELESS POWER TRANSMISSION (WPT).

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JODHPUR INSTITUTIONS OF ENGINEERING AND TECHNOLOGY

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  1. JODHPUR INSTITUTIONS OF ENGINEERING AND TECHNOLOGY ELECTRICAL ENGINEERING

  2. WIRELESS POWER TRANSMISSION VIA SOLAR POWER SATELLITE GUIDED BY:- PROF. CHANDRA SHEKHER BY:- ABHISHEK SUNDRANI

  3. WIRELESS POWER TRANSMISSION (WPT) • 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…..

  4. …HISTORY… • 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

  5. HISTORY (Cont.…) • 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 years • by a team led by Marin Soljačić from MIT. The project • is named as ‘WiTricity’.

  6. Why not wires??? • 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. Why WPT ??? • Reliable • Efficient • Fast • Low maintenance cost • Can be used for short-range or long-range.

  8. How Safe is WPT???? • 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. Wptbasics:- • 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. …Types of WPT… • 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 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.

  12. …SPS… …Solar Power Satellite… Solar Power Satellites (SPS) have proposed to collect solar energy in space and beam it down to the Earth.

  13. Why to use sps???? • 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. How SPS works?????

  16. …ADVANTAGES…. • 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

  17. …DISADVANTAGES…. • 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

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