Wireless Power Transfer has the ability to deliver major advancements in industries and applications that are dependent on physical, contacting connectors, which can be unreliable and prone to failure.
HMCS Vancouver Pre-Deployment Brief - May 2024 (Web Version).pptx
Introduction to Wireless Power Transfer and Witricity
1.
2. OVERVIEW
INTRODUCTION
WHY WPT(WIRELESS POWER TRANSMISSION) ?
TECHNIQUES OF WPT
APPLICATIONS OF WPT
MERITS AND DEMERITS
FUTURE SCOPE AND MARKET
CONCLUSION
3. INTRODUCTION
WHAT IS WITRICITY :The transmission of energy from
one place to another without using wires.
In 1899, Sir Nikola Tesla Proposed a method of
Wireless Power Transmission
The 187 feet tall tower to broadcast energy
But due to Shortage of fund the tower did not operate
6. TYPES AND TECHNOLOGIES OF WPT
Near-field techniques
Inductive Coupling
Resonant Inductive Coupling
Air Ionization
Far-field techniques
Microwave Power Transmission (MPT)
LASER power transmission
7. 7
Short range – INDUCTIVE COUPLING, AIRIONIZATION
Medium range – RESONANT INDUCTIVE COUPLING
Long range power transfer - MICROWAVE POWER AND
LASER TRANSMISSION
For the application of
8. INDUCTIVE COUPLING
Primary and secondary coils are not connected with
wires.
Energy transfer is due to Mutual Induction
Transformer is a basic example for induction process
9. Resonance Inductive Coupling(RIC
The capacitor and inductor forms the resonator. Charge
oscillates between inductor (as magnetic field) and
capacitor (as electric field.)
This type of oscillation is called
resonance if the reactance's
of the inductor and capacitor
are equal.
10. Capacitor is connected parallel to the coil
Energy will be shifting back and forth between
magnetic field surrounding the coil and electric field
around the capacitor
Block diagram
11. MICROWAVE POWER TRANSFER
In this method Electrical energy is converted to
microwave energy.
AC is converted to DC first then this DC is converted
to microwaves using MAGNETRON.
This wave is Captured using RECTENNA and convert
Microwave energy to electrical energy.
This Method is used where transfers high power from
one place to another being in line of sight usually.
12. Solar Power Satellite
Power beaming using microwaves has been
proposed for the transmission of energy from
orbiting solar power satellites to Earth
13. RECTENNA in US receives 5000MW of power
from SPS
Stands for rectifying
Antenna
Converts microwave
to its DC equivalent
MAGNETRON
14. LASERS
In the case of electromagnetic radiation closer to
visible region of spectrum ,power can be
transmitted by converting electricity into a laser
beam that is then pointed at a solar cell receiver.
15. LASER is highly directional, coherent
Not dispersed for very long
Simple receiver
Photovoltaic cell
Cost-efficient
But, gets attenuated when it propagates through
atmosphere
16. Is WiTricity Secure ?
16
Principle is based on Magnetic Waves.
The question is if Magnetic Waves Secure ?
The answer is we all live in a globe that has already
surrounded by magnetic waves.
Yes it is secure !
17. APPLICATIONS OF WPT
Near-field energy transfer
Electric automobile charging
Static and moving
Consumer electronics
Industrial purposes
Harsh environment
Far-field energy transfer
Solar Power Satellites
Energy to remote areas
Can broadcast energy globally (in future)
20. Defense Systems
EEE NMIT 2014 20
Photographs showing several military applications for
highly resonant wireless
charging systems: military robots (left) and soldier
electronics (right).
21. MERITS
Eliminates the existing transmission line cables, towers and sub
stations
More freedom of choice of both receiver and transmitters
Cost of transmission and distribution become less.
Power could be transmitted to the places where the wired
transmission is not possible.
Loss of transmission is negligible level.
Safer by eliminating the sparking hazard.
22. DEMERITS
The Capital Cost for practical implementation of WPT
seems to be very high.
Interference of microwave with present
communication systems
Common belief fears about the effect of microwave
radiation among peoples
When LASERs are used,
conversion is inefficient
Absorption loss is high
23. FUTURE SCOPE AND MARKET
Think that the city will be covered with WiTricity hot spots
like wi-fi.
which eliminate need of charging batteries or carrying
adapters all around !
Transport system become wirelessly powered
which eliminate fuel engines.
Which will give rise to the Robotic Technology
they will work for us 24 H 365 days without any failure.
24. CONCLUSION
More reliable than ground based solar power.
If we develop this ,we need not bother about the
exhaustion of natural resources.
Transmission without wires- a reality
Low maintenance cost. But, high initial cost
Low energy wastage
In near future, world will be completely wireless