This presentation is made for college project purposes. This is based on not only book but journals and other research.

1. WIRELESS POWER
TRANSMISSION
Presented By
Arnab Mondal, Arindam Mondal, Akshay Mondal, Arindam Saha, Mithun Chakrabarty
Department of Electrical Engineering
CALCUTTA INSTITUTE OF TECHNOLOGY

2. Overview
1. What is Wireless Power Transmission ?
2. Why WPT?
3. History
4. Modification
5. Wireless Power Transmission System
6. Components of WPTS
7. Advantages and disadvantages
8. Biological Impacts
9. Applications
10. Conclusions
11. References

3. Wireless power Transmission
Transmitting power
without using wires
i.e. as a microwaves
from one place to
another in order to
reduce the
transmission and
distribution losses.

4. WHY WIRELESS POWER
TRANSMISSION ?
1. 26% POWER BEING LOSSED DURING
DISTRIBUTION AND TRANSMISSION
DUE TO RESISTANCE OF WIRES
USED FOR GRID.
2. ACCORDING TO WORLD
RESOURCES INSTITUTE INDIA’S
ELECTRICITY GRID HAS THE
HIGHEST TRANSMISSION &
DISTRIBUTION LOSSES IN THE
WORLD.
3. AVOID POWER THEFT.

5. HISTORY
1. SIR NIKOLA TESLA
DEMONSTRATED ‘THE
TRANSMISSON OF ELECTRICAL
ENERGY WITHOUT WIRES’ IN 1893.

6. HISTORY
2. THE WARDENCLYFFE
TOWER DESIGNED BY
TESLA.

7. HISTORY
SIR WILLIAM C BROWN,
‘ THE PIONEER ‘
IN
WIRELESS POWER TRANSMISSION
TECHNOLOGY

8. MODIFICATION
MICROWAVE POWER
MODEL HELICOPTER

9. MODIFICATIONS
SHARP- Stationary
High Altitude Relay
Platform, the world
first fuel free airplane
powered by
microwave energy
from ground in 1987
at Canada.

10. MIT PROJECT
WITRICITY PROJECT BASED
ON RIC LED BY MIT PROF.
MARIN SOLJACIC

11. WPTS (Contd…)
1. IN TRANSMISSION SIDE ;
MICROWAVE POWER SOURCE
GENERETES MICROWAVE
POWER AND OUTPUT POWER
IS CONTROLLED BY CIRCUIT.
2. THE WAVE GUIDE FERRITE
CALCULATOR WHICH PROTECTS
THE SOURCE IS CONNECTED
WITH COAX – WAVE GUIDE
ADAPTOR.
3. TUNER MATCHES THE
IMPEDANCE BETWEEN THE
TRANSMISSION ANTENNA
AND SOURCE.
4. THE ATTENUATED SIGNALS
WILL BE THEN SEPERATED
BASED ON THE DIRECTION OF
SIGNAL PROPAGATION BY
DIRECTIONAL COUPLER.

12. WPTS
5. THE TRANSMITTING ANTENNA
RADIATES
THE POWER UNIFORMLY THROUGH
FREE SPACE TO RECTENNA.
6. RECTENNA RECEIVES THE
TRANSMITTED POWER AND CONVERT
THE MICROWAVE POWER INTO DC
POWER.
7. THE RECTIFYING CIRCUIT CONSISTS
OF SCHOTTKY BARRIER DIODES
CONVERTS THE RECEIVED MICROWAVE
POWER INTO DC POWER.

13. COMPONENTS OF WPTS
1. MICROWAVE GENERATOR

14. COMPONENTS OF WPTS
2. TRANSMITTING ANTENNA

15. COMPONENTS OF WPTS
3. RECTENNA
(IN US RECTENNA RECEIVES
5000MW OF POWER.)

16. PROS….AND CONS…
• ADVANTAGES
• RELIABLE
• EFFICIENT
• FAST
• LOW MAINTAINANCE COST
• CAN BE USED COUSTOMLY.
• NO WIRE
• NO WASTE OF POWER
• DISADVANTAGES
• DISTANCE CONSTRAINS
• FIELD STRENGTH HAVE TO BE
UNDER SAFETY LEVEL.
• INITIAL COST IS HIGH
• HIGH FREQUENCY SUPPLY MUST
BE THE SUPPLY.

17. BIOLOGICAL IMPACT
COMMON BELIEFS FEAR THE
EFFECT OF MICROWAVE
RADIATION. BUT THE STUDIES IN
THIS DOMAIN REPEATEDLY PROVES
THAT THE MICROWAVES
RADIATION LEVEL WOULD BE
NEVER HIGHER THAN THE DOSE
RECEIVED WHILE OPENING THE
MICROWAVE OVEN DOOR MEANS
IT IS SLIGHTLY HIGHER THAN THE
EMISSIONS CREATED BY CELLULAR
TELEPHONES.

18. APPLICATIONS
NEAR FIELD ENERGY TRANSFER:
1. ELECTRIC AUTOMOBILE CHARGING
2. CONSUMER ELECTRONICS
3. INDUSTRIAL PURPOSES
FAR FIELD ENERGY TRANSFER
1. SOLAR POWER SATELITIES
2. ENERGY TO REMOTE AREAS
3. CAN BROADCAST ENERGY GLOBALLY

19. CONCLUSION
1. TRANSMISSION WITHOUT WIRES- A REALITY
2. EFFICIENT
3. ENERGY CRISIS CAN BE DECREASED
4. LOW LOSS
5. IN NEAR FUTURE, WORLD WILL BE COMPLETELY WIRELESS.

20. REFERENCES
1. SLIDESHOW
2. GOOGLE
3. INTERNATIONAL JOURNAL OF COMPUTER APPLICATION(0975-8887)