Wireless Electricity Or WiTricity; The World Without Wires.

     


      Wireless Electricity Or WITRICITY..The 


World Without Wires.

                                                                        
                                               WI (Wireless)TRICITY(Electricity)
1..INTRODUCTION:









        The technology used for wireless power transmission is known as WiTricity. Wireless power transmission is not a new idea, Nikola Tesla proposed theories of wireless power transmission in the late 1800s and early 1900s.


 Tesla's work was impressive, but it did not immediately lead to widespread practical methods for wireless power transmission. Since then many researchers have developed several techniques for moving electricity over long distances without wires. 

Some exist only as theories or prototypes, but others are already in use. In 2006 researchers at Massachusetts Institute of Technology led by Marine Soijacic discovered an efficient way to transfer power between coils separated by a few meters. They have dubbed this technology as?WiTricity?.


 The physical phenomenon of long-lifetime resonant electromagnetic states with localized 


slowly evanescent field patterns used to transfer energy efficiently over non-negligible distances like 8 times the radius of the coil, even in the presence of extraneous environmental objects was experimentally demonstrated. 



2..HISTORY OF WIRELESS POWER:
Wireless power transmission is not new for us. Various methods of Transmitting power wirelessly have been known for centuries. 
In 1899, Sir Nikola Tesla proposed a method to transmit energy over long distances wirelessly using ElectroMagnetic radiation principle, but such radiation is excellent for wireless transmission of Information, it is not feasible to Power transmission. 



Directed radiation modes like Lasers or highly-directional antennas can be efficiently used for energy transfer even for long distances but require the existence of an uninterruptible line-of-sight and a complicated tracking system in the case of mobile objects and also not Eco-friendly. So these procedures are insufficient to Wireless power transmission.



Witricity is a new technology used for wireless power transmission. The inventors of WiTricity are the researchers from Massachusetts Institute of Technology (MIT). This method is mainly based on the transmission of magnetic energy by taking two Magnetically Resonant objects in Strongly Coupledregime. 




 The source and load are coupled to the coils which are magnetically resonant and transmit energy in the magnetic form in the strongly coupled regime. As they are in magnetic resonance, there is no possibility of external disturbances.



3..NEED OF WITRICITY: 
Nowadays there is a Rapid development of autonomous electronics like laptops, cell-phones, house-hold robots and all the above devices typically rely on chemical energy storage(Battery).As they are becoming daily needs to present generation, Wireless energy transfer would be useful for many applications as above and they need midrange energy.
If we adopt this WiTricity concept to these devices, we may eliminate the problems caused by the batteries. We may use this by fixing on our room ceiling to charge our devices wirelessly. 





 4..BASIC PRINCIPLE:
The basic concept behind WiTricity-Wireless Electricity is Magnetic Resonance. Two resonant objects of the same resonant frequency tend to exchange energy efficiently while dissipating relatively little energy in extraneous off-resonant objects. 
In systems of coupled resonances, there is often a general?Strongly Coupled? the regime of operation. If one can operate in that regime in a given system, the energy transfer is expected to be very efficient. Midrange power transfer implemented in this way can be nearly omnidirectional and efficient, irrespective of the geometry of the surrounding space, with low interference and losses into environmental objects. 

The above considerations apply irrespective of the physical nature of the resonances.
5..VIDEO REPRESENTATION..

                   A..How Wireless Energy Transfer Works----Video 1



B..Power Your Entire Home Without Wires!----Video 2

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