This document discusses wireless power transmission (WPT). It begins with an overview and objectives, then discusses the history of WPT from Tesla's experiments in the late 19th century. The document explains that WPT works via magnetic or inductive coupling and describes various methods like atmospheric conduction, microwave transmission, and laser transmission. It notes applications like electric vehicle charging and transmitting power to remote areas. In closing, it outlines advantages like efficiency and flexibility and disadvantages like high initial costs.

1. Wireless
Presented by,
T.Hari Shiyam Prakash
(922015105009)
M.Anandha Kumar
(922015105002)
Dept. of EEE (SVCET)

2. Overview
 Objective
 Abstract
 Definition and common view
 Wireless power transmission(WPT)
 Need of WPT
 History of WPT
 Basic concept of WPT
 Methods of WPT
 Merits and demerits
 Applications

3. Objective
 The main objective of my presentation is to
learn about the ways to transmit the power
from the source to the destination in the basis
of modern world.
Abstract
 The abstract of my presentation is to learn
and to explain a clear view in the concept of
power transmission in wire less manner.

4. Wireless
 Wireless is generally defined as the
electrical or electronic device that are
able to operate without any additional
cable
 In the other hand ,wireless means a
process which is done with the help of
two devices
 Transmitter
 Receiver

5. View of common man
 Generally , we think that wireless is
something that deals with the
communication devices like......
 Mobiles
 Telephones
 Telegrams
 Radio
 Internet(2g,3g,4g) ...........etc.

6. Wireless power
transmission(WPT)
 Wireless power transmission is
defined as the transmission of
electrical power from one place to the
other without using wires.

7. Need of elimination of wire
 As per the electrical studies most of
the power transmission is done
through the wires.
 Most of the losses take place in the
time of transmission
 An average transmission losses in the
world is 30% to 45%

8. Need for WPT
 Highly reliable.
 Low cost of maintenance.
 Fast and easy.
 Efficiency level is high.
 Efficient.
 Used for short and long range of
transmission.

9. History of WPT
 The idea for the alternative of
transmission line was started in the late
19th century.
 This was started by heinrich hertz and
Nikola Tesla.
 Tesla made a theoretical explanation for
WPT and it was practically demonstrated
in 1899, by powering a fluorescent lamp
25 miles away from the source.
 His ultimate aim was to create a “World
Wireless System”

10. History(cont…)
 But, due to the shortage of funds he
could not continue his research.
 His research idea was taken into
account after 100 years.

11. Basic concept of WPT
 The WPT works on the basis concept of
energy coupling.
 Energy transfer coupling is done in two
forms…..
 Magnetic coupling
 Inductive coupling

12. Methods of WPT
 There are two methods of power
transmission.
◦ Atmospheric conduction
◦ Electrodynamics induction method
 Microwave
 Laser method

13. Atmospheric conduction method
 The high power transmission is done
through “WARDEN CLYFFE”
 Warden clyffe is also known as tesla
tower.
 In this method ,the upper path of the
circuit acts as transmitter.
 The lower path of the circuit is acts as
reciver.
 An electromotive impulse is passed
and the circuit is ionized.

14. Limitation of atmospheric
conduction
 Economically challenging.
 Change in atmosphere.
 High tower potential should be
maintained.

15. Laser transmission
 Conversion of electricity into laser
beams(power beaming).
 Laser is highly directional
 Cost efficient
 Simple receiver
◦ Pv cells
 Changes due to atmosphere

16. Micro wave technique
 Power transmission via radio waves
is more effective for long
transmission.
 It allows longer distance power
beaming with the electromagnetic
radiation.
 The efficiency level in this technique
exceeds to 95%
 This method can also be implemented
directly from the solar power satellite.

17. Applications
 Near –field energy transfer
◦ Electric automobile charging
◦ Consumer
electronics(mobiles,laptops,…etc)
◦ Industrial purpose
 Far field energy transfer
◦ Solar power satellites
◦ Energy to remote areas
◦ Global energy

18. Advantages of WPT
 Efficient
 Easy and fast processing
 Grid, substation can be eliminated
 Low maintenance cost
 More effective during the time of
transmitting and receiving.
 Can be used even in remote areas.

19. Disadvantages of WPT
 Interference may occur in the usage of
microwaves.
 Absorption losses occurs in the laser
technique
 Radioactive in nature
 Initial cost is very high
 High frequency signals should be
supplied with safety measures.