The document discusses wireless power transmission (WPT), explaining its definition, historical context, and various methods such as atmospheric conduction and electromagnetic induction. It highlights the benefits of WPT, including reduced energy loss compared to traditional wired systems, as well as challenges like cost and atmospheric interference. Various applications and future implications of WPT are also covered, emphasizing its potential to revolutionize energy transmission.

1. PRESENTED BY-
SHASHANK KAMAL
SHUBHAM JAIN

2.  About topic
 What does wireless mean
 History
 Types of W.P.T
 Atmospheric conduction method
 Electrodynamic induction method
 Positive points and Negative Points
 Applications
 Conclusion
 References
2Wireless Power Transmission

3. • Major Issue is loss of Energy during Transmission and
Distribution.
• Approximately 26% power is lost during transmission and
distribution.
• The main reason of loss is Resistance of Wires.
• According to the World Resources Institute (WRI), India
has maximum loss of power i.e. about 27-40%.
• Tesla had proposed methods of transmission of electricity
using electromagnetic induction.

4. • The word wireless means “without wire”.
• Wireless energy transfer or wireless power is the
transmission of electrical energy from a power source to an
electric load without interconnecting man made
conductors.
• Wireless transmission is useful in cases where
interconnecting wires are inconvenient, hazardous or
impossible.

5. Different methods of transmission proposed by different
scientist and scholars are:
1. Atmospheric conduction method of Tesla
2. Electrodynamic induction method:
 Microwave method
 Laser method

6. • In 1899 Sir NICOLAI TESLA and HEINRICH HERTZ powered
a fluorescent lamp keeping it 25 miles away from source
without using wire.
• Wireless power transmission experiments at WARDEN
CLYFFE High frequency current, of a Tesla coil, could light
lamps filled with gas (like neon).
• In this method a closed circuit is made using transmitter,
ionized path between upper atmosphere and transmitter,
second ionized path connecting receiver.
• The circuit back to the transmitter is completed through the
earth .

7. • High potential is maintained at transmitter and receiver end
as well. A high potential transmitter transmits an
“electromotive impulse” .
• It ionizes the air, and this air between the transmitter and
receiver would conduct like a neon tube .
Image reference: Dr. Tesla Weather Control: http://www.aniruddhafriend-
samirsinh.com/wp-content/uploads/2015/11/Dr.-Nikola-Tesla-Weather-Control.jpg

8. • Economically challenging.
• Periodic changes in atmospheric condition.
• Maintaining high tower potential every time.

9.  We bring electromagnetic radiation into
practice, which uses far field technique in order
to achieve range into kilos, which includes two
techniques:
• LASERS
• MICROWAVE
Image Reference: Laser Based Power Transmission:
https://upload.wikimedia.org/wikipedia/commons/6/66/Space_to_ground_microwave,_laser
_pilot_beam.png

10.  LASER is highly directional, coherent
 Not dispersed for very long distance
 But, gets attenuated when it propagates through
atmosphere
 Simple receiver
 Photovoltaic cell
 Cost-efficient
10Wireless Power Transmission

11. • In the case of electromagnetic radiation, power can be
transmitted by converting electricity into a laser beam.
• LASER is then pointed at a solar cell receiver.
• This mechanism is generally known as "power beaming“.
CURRENT
CURRENT
LASER
TRANSFORMER
OPTICAL FIBRE

12. • Power transmission via radio waves can be made more
directional, allowing :
 longer distance power beaming, with shorter wavelengths
of electromagnetic radiation.
 A Rectenna may be used to convert the microwave energy
back into electricity.
 Rectenna conversion efficiencies exceeding 95% have been
realized.

13.  Wave Coupling extends the Principle of
Electromagnetic Induction.
 Power beaming using microwaves has been proposed
for the transmission of energy from orbiting solar
power satellites to Earth
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Image Reference: Microwave Power Transmission:
http://large.stanford.edu/courses/2010/ph240/ma1/images/f2big.gif

14.  Near field energy transfer
 Electric Automobile charging
 Consumer Electronics
 Industrial Purposes
 Far field energy transfer
 Energy to remote areas
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15.  Efficient
 Easy
 Need for grids, substations etc. are eliminated
 Low maintenance cost
 More effective when the transmitting and receiving
points are along a line-of-sight
 Can reach the places which are remote
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16.  When microwaves are used, interference may arise.
 When LASERs are used there is a lot of absorption
loss.
 Its radioactive in nature.
 Distance constraint: initial cost is high.
 Field strength has to be under safety levels.
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17.  Transmission without wires will become a reality.
 Efficient.
 Low maintenance cost.
 Better than conventional wired transfer.
 Energy charges can be decreased.
 Low loss.
 In near future, world will be completely wireless.
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18.  Wireless Power Transmission- Wikipedia
https://en.wikipedia.org/wiki/Wireless_power_transfer
 WiTricity- Wikipedia
https://en.wikipedia.org/wiki/WiTricity
 Feasibility of Wireless Power Transmission : Biswa, Rajen
http://www.academia.edu/1561057/Feasibility_of_Wireless_P
ower_Transmission
• Wireless Power-Robokid249
http://www.instructables.com/id/Wireless-Power-
Transmission-Over-Short-Distances-U/3/14/2016 18Wireless Power Transmission