4.  The Transmission of energy from
to another place without using w
 Conventional energy transfer is u
 But the wireless transmission is m
by various technologies……

5. Nikola Tesla in late 1890s
Pioneer of Induction Techniques
His vision for ”World Wireless System”
The 187 feet tall tower to broadcast
All people can have access to free energy
Due shortage of funds, tower did not operate

6. Tesla was able to transfer energy from
one coil to another coil
He managed to light 200 lamps from
distance of 40km
The idea of Tesla is taken in to research after by a
team led by Marin soljacic from MIT Is named as
“Witricity”

7. 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%

9. I. Near-field Techniques
II. FAR-FIELD TECHNIQUES
 Inductive Coupling
 Resonant Inductive Coupling
 Air Ionization
 Microwave power transmission (MPT)
 LASER Power transmission

15. Toughest Techniques under near field transfer techniques
Air Ionized only when there is a high field
Needed field is 2.11MV/m
Natural example is lighting
Not feasible for practical implementation

16. • No wire, No e-waste
• Need for battery eliminated
• Efficient and harmless
• Distance constraint
• Field should be under safety
• High Initial Cost
• Tuning is difficult in RIC

20. • Efficient , Easy
• Low Maintenances cost
• Can reach the place which
are
remote
• More effective when
transmitting and receiving
points along a line of sight
• Need for grid eliminated
• Radiate
• When LASER are used
Conversion is inefficie
Absorption loss is high
•When MICROWAVE are
Interference may ari

22.  Based on RIC , led by MIT’s Marin Soljacic
 Coil were in helical Shape
 No Capacitor were used
 Efficiency achieved was around 40%
 Used frequency are 1 MHz and 10MHz
 INTEL is working on it

23.  WTRICITY can perform
electric transmission
2 cm to 3-4m
 Scientists are working
on extending on this
range

24. I. Bluetooth
II. Wi-Fi
III. NFC(Near Field Communication)
IV. Satellite Communication
V. Cordless Mouse, Keyboard, Mobiles,
Microphone, Headphone

31.  Transmission without wires – a reality
 Efficient
 Low maintenance cost
 Better than conventional wired transfer
 Energy crisis can be decreased
 Low loss
 In near future, world will be completely wi