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Wireless Power Transmission , Wireless Charging

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wireless power transmission , wireless charging , inductive charging

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Wireless Power Transmission , Wireless Charging

  1. 1. WIRELESS POWER TRANSMISSION - PR A SA NN SHR I VA S TAVA 1 1 0 1 0 -7052 E L E CT RO NICS A ND CO MMU NICATIO N MA NIPA L UNIVE R S IT Y J A I P U R
  2. 2. What Is Wire-less Power Transmission ? • Wireless Power Transmission or Wireless Energy Transmission is the transmission of electrical energy from a power source to an electrical load without conductors. PRASANN SHRIVASTAVA - 110107052 26 November 2013 2
  3. 3. What Is Wire-less Power Transmission ? • Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous, and/or impossible. PRASANN SHRIVASTAVA - 110107052 26 November 2013 3
  4. 4. History of WIRELESS POWER TRANSMISSION In 1901, Nikola Tesla used the Principle of electrodynamics induction to transfer electromagnetic energy without the need of wires to construct the Wardenclyffe tower (Figure 1) to transmit power between America and Europe but was destroyed by US government in 1917. PRASANN SHRIVASTAVA - 110107052 26 November 2013 4
  5. 5. • A magnetic field is created around the wire if electricity is transmitted down a wire Andre Marie Ampere PRASANN SHRIVASTAVA - 110107052 Michael Faraday • Faraday developed the fundamental law of induction, a process that enables the transfer of power from one wire to another using magnetic field. • Maxwell equation was established, which is the basis of several everyday devices including electrical motors and generators Maxwell 26 November 2013 5
  6. 6. Researches Over WIRELESS TRANSMISSION In 2007, MIT researchers proposed the wireless power transmission based on strong coupled magnetic resonance and successfully lightened a 60 W bulb over 2 meters with a transfer efficiency of 30%. In 2008, Intel demonstrated an experiment setup to lighten a 60 W bulb over 1 meter with the transfer efficiency of 70 %. PRASANN SHRIVASTAVA - 110107052 26 November 2013 6
  7. 7. FIND OUT PRASANN SHRIVASTAVA - 110107052 26 November 2013 7
  8. 8. PRASANN SHRIVASTAVA - 110107052 26 November 2013 8
  9. 9. The technologies for wireless charging can be magnetic induction, radio frequency, optical or conduction. PRASANN SHRIVASTAVA - 110107052 26 November 2013 9
  10. 10. • Magnetic induction converts electrical energy to magnetic energy. It allows transmission over an air gap and is typically short to midrange • For microwave or radio frequency, the parabolic dish focuses radio waves which are typically long range waves towards intended target. PRASANN SHRIVASTAVA - 110107052 26 November 2013 10
  11. 11. • For optical or infrared, the laser light is focused on photovoltaic cells that convert light energy to power. • In conduction, the power transfer occurs due to metallic contact between transmitter and receiver. PRASANN SHRIVASTAVA - 110107052 26 November 2013 11
  12. 12. Magnetic induction has two categories namely magnetic induction coupling and magnetic resonance coupling. In inductive coupling, the source drives a primary coil creating a sinusoidal varying magnetic field which induces a voltage across terminals of secondary coil, thus transferring power to load. Magnetic resonance coupling is more advantageous since it has an extended range and potential to support multiple receivers. PRASANN SHRIVASTAVA - 110107052 26 November 2013 12
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  19. 19. ADVANTAGES •Wireless • A number of devices can be charged at a time • Electrically safe • Can be used in harsh environments due to encapsulation • High power in output • Waterproof • Low maintenance • Charging is convenient PRASANN SHRIVASTAVA - 110107052 LIMITATIONS •More power consumption • Low efficiency • Heat generation is more than traditional charging • Complex circuitry • More costly • Slow Charging • High cost of manufacturing • Harmful magnetic adiations emitted 26 November 2013 19
  20. 20. APPLICATIONS In Mobile Phones In Cordless Phones In Electric Car In Laptops In Low Power Consuming Appliances. PRASANN SHRIVASTAVA - 110107052 26 November 2013 20
  21. 21. Demonstration of wireless charging PRASANN SHRIVASTAVA - 110107052 26 November 2013 21
  22. 22. PRODUCTS AVAILABLE IN MARKET PRASANN SHRIVASTAVA - 110107052 26 November 2013 22
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  24. 24. Conclusion Wireless energy transmission technology has been developed in which electrical energy is transmitted from power source to an electrical device without using wires. The technology has improved sustainability but still consists of various drawbacks which need to be researched upon in order to commercialize it. PRASANN SHRIVASTAVA - 110107052 26 November 2013 24
  25. 25. Thank You 

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