A REVIEW ON WIRELESS POWER TRANSFER (WPT) SYSTEM by manjeet singh

1. A
seminar on
presentation
at
“A REVIEW ON WIRELESS POWER TRANSFER”
(KOTA)
SUBMITTED BY:
MANJEET SINGH
4th year , EE
14/N/062
DEPARTMENT OF ELECTRICAL ENGINEERING
MODI INSTITUTE OF TECHNOLOG
NAYAGAON , KOTA -324010
SUBMITTED TO:
Mr. GAURAV KAPOOR
2018

2. WIRELESS POWER TRANSFER DIAGRAM

3. CONTENT
 Introduction
 Basic principal of WPT
 Types of WPT
 Comparison of WPT
 Rezence standard
 Advantages And Disadvantages Of WPT
 Conclusion

4. INTRODUCTION
 Wireless power transfer (WPT) or electromagnetic power transfer is the
transmission of electrical energy without wires.
 Nicole Tesla was the first one to introduce the wireless power transfer In
1891, he began his work on wireless power transmission a this laboratory
in Colorado, USA.
 Tesla’s successful experiment was the first demonstration of wireless
power transfer concept The Wardenclyffe tower.

5. BASIC PRINCIPAL OF WPT
 By converting the AC Power to DC Power Using Rectifiers And Filters and then
again converting it back to AC at high frequency using inverters.
 This low voltage high frequency Ac Power then passes from the transformer
primary to its secondary and is converted to DC Power Using rectifier, filter and
regulator arrangement.

6. MOTIVATION FOR WPT
 Increase the device mobility
 Avoid the wiring Hazards , Cost & isolation
 Improve electric vehicles reliability
 Enhance the research of biomedical Maintenance free and no
electrical plugs

7. TYPES OF WIRELESS POWER TRANSFER
 Inductive Coupling WPT
 Magnetic Resonance Inductive Coupling
 Wireless Power Transfer Using Microwaves
 Power Transfer by Laser
Wireless power techniques mainly fall into four categories

8. BLOCK DIAGRAM OF INDUCTIVE COUPLING

9.  In inductive coupling (electromagnetic induction) or inductive power transfer,
IPT), power is transferred between coils of wire by a magnetic field
 It is used in near field power transmission such as electric toothbrushes .
INDUCTIVE COUPLING

10. MICROWAVE
POWER
SOURCE
WAVEGUIDE
CIRCULATOR
AND
ADAPTOR
TUNER
WAVEGUIDE
ADAPTORLOAD
IMPEDANCE
MATCHING AND
FILTER CIRCUIT
TRANSMITTING
ANTENNA
 By converting the AC power to RF power and transmitting it through
space and again reconverting it to AC power at the receiver.
 allowing longer-distance power transfer.
 Efficiency 95% realize through it
MICROWAVE WIRELESS POWER TRANSFER

11.  Stands for rectifying antenna
 Consists of mesh of dipoles and diodes
 Converts microwave to its DC equivalent
 Usually multi-element phased array
RECTENNA

12. SOLAR POWER SETELLITE (SPS)
 To provide energy to earth’s increasing energy need
 SPS are placed in geostationary orbits
 Each SPS may have 400 million photocells
 Efficiency exceeds 95% if microwave is used
mMicrowave emitter
Satellite
earth
Solar panel
Receiver

13. POWER TRANSFER BY LASER
 The power is beamed at a receiver that can convert it to electrical
energy known as 'power beaming‘
 The visible region of the spectrum (tens of micrometers to tens
of nanometers).
 High efficiency photo voltaic cells are used to convert the received laser
beam back into electricity.

14. TYPES OF WPT Distance between
transmitter and receiver
circuits
EFFICIENCY
Inductive Coupling a few millimeters Low
Magnetic Resonance a few meters High
Microwaves up to 100 kilometers High
Laser a few meters but could
be used for longer
distances by using high
intensity beam
Low
COMPARISON OF DIFFERENT WPT METHODS

15. REZENCE STANDARD
 Rezence is a newly-developed wireless power transfer
standard introduced by Alliance for Wireless Power.
 on magnetic resonance technology to transfer power
between a power transmitter and a power receiver.
 This standard is developed to provide more features than
the Qi Standard.

16. BLOCK DIAGRAM OF WPT SYSTEM

17.  No Wires
 No E-waste
 Efficient Energy Transfer
 Unaffected By Day-night Cycle, Weather Or Season
ADVANTAGE

18.  Initial Cost Is High.
 High- Frequency Signal Must Be The Supply.
 Maintenance Is Complicated
DISADVANTAGE

19. FUTURE APPLICATION
Charging portable devices (Qi), biomedical implants, electric vehicles,
powering buses, trains, smartcards.
Solar power satellite, powering drone aircraft, charging wireless devices.
Powering drone aircraft, powering space elevator climbers
Wireless parking charger.

20.  Based on this study, we can say that the magnetic resonance WPT is the
most promising technique for powering devices wirelessly with high
efficiency over up to few meters. Being safe A for humans and environment,
magnetic resonance WPT can spread to be the standard charging method for
most portable devices in the next few years
CONCLUSION

21. REFERENCES
1. Nikola Tesla, ―Colorado Springs notes 1899-1900,‖ 1999, ISBN-10: 8087888243. Sagolsem
Kripachariya Singh, T. S. Hasarmani, and R. M. Holmukhe, "Wireless Transmission of Electrical
Power Overview of Recent Research & Development," International Journal of Computer and
Electrical Engineering, Vol.4, No.2, April 2012.
2.Senthil Nathan.M and Pandiarajan.K, "A Review Of Wireless Power Transmission," IJERA,Vol.
Issue 1,2013, pp.1125-1130; ISSN: 2248-9622.
3.Grant covic and John boys,"Inductive power transfer (IPT) powering our future," presentation,
Auckland Uniservices Ltd, 2010.

22. THANK YOU…

23. QUERY…..???ANY