This document summarizes wireless power transmission called WiTricity. It describes how Nikola Tesla first proposed wireless power in 1899 using electromagnetic waves, but it had low efficiency. In 2007, MIT scientists revived the idea and named it WiTricity. There are three types of WiTricity with different ranges - inductive coupling for short range using coils, resonant induction for medium range using tuned coils, and electromagnetic waves for long range. It works by using a power source transmitter and receiver capture device with strongly-coupled resonators. While it could be used for applications like charging electric vehicles and devices, it has limitations like short transmission distances and decreased efficiency over longer distances.

1. Represented by:-
shubham anand

2. WHAT IS WITRICITY ?
 Electricity without wires.
 Short form of wireless
electricity.

3. 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.

4. "TESLA HAS FIRED THE SPARK FLASHED ROUND
THE WORLD“
THE FAMOUS TESLA TOWER ERECTED IN
SHOREHAM, LONG ISLAND, NEW YORK

5. THE FORGOTTEN INVENTION IS REBORN IN
2007
 The idea of wireless
electricity has been
around since the early
days of the Tesla coil.
 But thanks to a group
of MIT scientists.
 They named it
"WiTricity”.

7. BASICS OF WITRICITY
 There are 3 major types , each
with different ranges, methods of
transfer
 – Short range: Inductive Coupling

– Medium range: Resonant
Induction

– Long range: Electromagnetic
Wave Power Transfer

8. TECHNOLOGY RANGE ANTENNA
DEVICE
CURRENT OR FUTURE
APPLICATION
INDUCTIVE
COUPLING
SHORT WIRE COILS Electric tooth brush and
razor battery charging.
RESONANT
INDUCTIVE
COUPLING
MED TUNED WIRE
COIL
Electric vehicles, powering
busses, trains.
CAPACITIVE
COUPLING
SHORT ELECTRODE Charging portable devices,
power routing in large-scale
integrated circuits,
Smartcards.
MEGNETOD-
YNAMIC
COUPLING
SHORT ROTATING
MAGNRT
Charging electric vehicles,
busses, biomedical
implants.
MICROWAVE LONG PAROBLIC
DISHES Solar power satellite,
powering drone aircraft.
LIGHTWAVE LONG LASER,
PHOTOCELL
Powering drone aircraft,
powering space elevator

9.  Power
source(transmitter).
 capture device(receiver).
 Power source provides
power.
 capture device capture it to
work.
 Specially designed.
 ‘‘Strongly-Coupled’’
resonators.
BASICS COMPONENTS
Electricity
Magnetis
m
Electroma
gnetism
Magnetic
Induction
Energy/Po
wer
Coupling
Resonance
Resonant
Magnetic
Coupling

10. WORKING

16. ILLUSTRATION

18. DISADVANTAGES
 Transmissions possible only in few meters.
 Possibility of “energy theft”.
 Efficiency decreases with distance.
 The resonance condition should be satisfied
and if any error exists, there is no possibility
of power transfer.

19. CONCLUSION
 Will it harm me?
 Will it harm the environment?
 Will it interfere with important
communication?
NO

20. Sources:-
Wikipedia
Witricity.com
Google
Youtube
THANKS