1. WiTricity The Wireless Transmission of Electricity Nayara Montes

2. Introduction Modern electricity generation system: Transmission and distribution losses; A lot of clutter in the process… √ WiTricity can be the solution!

4. History 1893: Nikola Tesla’s experimental proof. 2007: Experiment of a MIT’s research group. 2011/ 2012: Powermat Wireless Charging. 4

5. MIT’s principle of operation » Two copper coils, each a self-resonant system; » Resonant source; » Resonant capture device; » The space hadn’t radioactive magnetic field; 5

6. 6 2007: Equipment wireless power transmitter used in the tests at MIT.

7. 7 AdvantagesDisadvantages Transmission can be possible if there is any obstruction; Small range. No need of power cables and batteries; It does not interfere with radio waves; Wastage of power is small; Harmless to our health; More efficient than electromagnetic induction; Less costly.

8. WiTricity in our daily life 8

9. 9 Acesse o video através do link abaixo: http://www.youtube.com/watch?v=Ke- G8wRjAvY

10. References http://revistagalileu.globo.com/Revista/Common/0,,EMI299116-17770,00- INVENCOES+FUTURISTAS+QUE+ESTAO+SENDO+CONSTRUIDAS+AGORA.html http://www.buzzle.com/articles/witricity-wireless-electricity.html http://sahyadri.edu.in/E-Journal/witricity.pdf http://electronics.howstuffworks.com/everyday-tech/wireless-power.htm 10

11. Thank you! Nayara Souza Montes nayara.montes@engenharia.ufjf.br 11