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Wireless power transmission


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Today every thing is going small so use of wires in electrical equipment also reduced so need of wireless power transmission also get in demand this ppt presentation is all about wireless power transmission and it is real and possible because many people think that it is not possible .

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Wireless power transmission

  1. 1.  WIRELESS POWER TRANSMISSION 10/12/2013 Wireless Power Transmission 1
  2. 2. • OVERVIEW  What is wireless power transmission(WPT)?  Why is WPT?  History of WPT  Types of WPT  Techniques to transfer energy wirelessly  Advantages and disadvantages  Applications  Conclusion  References 10/12/2013 Wireless Power Transmission 2
  3. 3. What is 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 10/12/2013 Wireless Power Transmission 3
  4. 4. Why not wires?  As per studies, most electrical energy transfer is through wires.  Most of the energy loss is during transmission • On an average, more than 30% • In India, it exceeds 40% 10/12/2013 Wireless Power Transmission 4
  5. 5. History of Wireless Power:  In 1899, Sir Nikola Tesla Proposed a method of Wireless Power Transmission.  As it is in Radiative mode, most of the Power was wasted and has less efficiency.  The efficient midrange power transfer concept is Witricity. In this model source and load are in Magnetic resonance so there is no power loss.
  6. 6. The forgotten invention is reborn in 2007 RESONANCE COUPLING  A group of engineers at MIT came up with the idea to use resonant induction to transmit power wirelessly. “Resonance", a phenomenon that causes an object to vibrate when energy of a certain frequency is applied.
  7. 7. Why WPT?  Reliable  Efficient  Fast  Low maintenance cost  Can be used for short-range or long-range. 10/12/2013 Wireless Power Transmission 7
  8. 8. Energy Coupling  The transfer of energy  Magnetic coupling  Inductive coupling  Simplest Wireless Energy coupling is a transformer 10/12/2013 Wireless Power Transmission 9
  9. 9. Advantages of WPT  No wires  No e-waste  Need for battery is eliminated  Efficient energy transfer  Harmless, if field strengths under safety levels  Maintenance cost is less 10/12/2013 Wireless Power Transmission 10
  10. 10. Disadvantages  Distance constraint  Field strengths have to be under safety levels  Initial cost is high  In RIC, tuning is difficult  High frequency signals must be the supply  Air ionization technique is not feasible 10/12/2013 Wireless Power Transmission 11
  11. 11. Applications 10/12/2013 Wireless Power Transmission 12
  12. 12. Conclusion  Transmission without wires- a reality  Efficient  Low maintenance cost. But, high initial cost  Better than conventional wired transfer  Energy crisis can be decreased  Low loss  In near future, world will be completely wireless 10/12/2013 Wireless Power Transmission 13
  13. 13. Thank You. 10/12/2013 Wireless Power Transmission 14