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08/07/131 WiTricity
TABLE OF CONTENTS
 INTRODUCTION
 HISTORY
 BASICS
 WORKING
 ADVANTAGES
 DISADVANTAGES
 CONCLUSION
WHAT IS WITRICITY
Electricity without wires
3 08/07/13WiTricity
History of Wireless Power
 In 1899, Sir Nikola
Tesla Proposed a
method of Wireless
Power Transmission.
 As it is in Radi...
The forgotten invention is reborn in
2007
The idea of wireless
electricity has been
around since the
early days of the
Tes...
There are 3 major types , each with different
ranges, methods of transfer
– Short range: Inductive Coupling
– Medium range...
HOW DOES RESONANT
INDUCTION WORKS
 Same principles as magnetic induction, but uses
resonance to increase the range.
 Eve...
RESONANT MAGNETIC COUPLING
Magnetic coupling occurs when two
objects exchange energy through their
varying or oscillating ...
WORKING:
10 08/07/13WiTricity
11 08/07/13WiTricity
12 08/07/13WiTricity
WiTricity Technology: The Basics
13 08/07/13WiTricity
 There are witricity power sources(transmitter) and
capture devices(receiver).
 Power source provides power to the devic...
Witricity Features
Highly Resonant Strong Coupling Provides
High Efficiency Over Distance
Energy Transfer via Magnetic Nea...
It will make products :
• More Convenient:
-No manual recharging or changing batteries.
-Eliminate unsightly, unwieldy and...
ADVANTAGES
 Safe, fairly efficient, good range
 Boon for the devices which uses midrange
power
 No need of line of sigh...
08/07/13WiTricity18
DISADVANTAGES
 Transmissions possible only in few meters
 Possibility of “energy theft”
 Efficiency decreases with dist...
WITRICITY CONCERNS
 Will it harm me?
 Will it harm the environment?
 Will it interfere with important
communication?
NO...
APPLICATIONS
 Direct Wireless Power—when all the power a device
needs is provided wirelessly, and no batteries are
requir...
APPLICATIONS
 Consumer electronics
 Transportation
 Industry applications
 Other applications
– Medical devices
– Mili...
REFERENCES
 http://en.wikipedia.org/wiki/WiTricity
 http://www.electricitybid.com/electricity/index.php/
 http://www.wi...
THANKING YOU
24 08/07/13WiTricity
Features and benefits
Witricity’s Technology Technology Benefit
Highly resonant strong coupling High efficiency over dista...
Long Range Wireless Energy Transmission:
Microwave Power Transfer
Microwave Power Transfer (MPT) is a form of wave powerMi...
APPLICATIONS
Recently a Canadian program sent up SHARP (Stationary High
Altitude Relay Platform), a small unmanned aircraf...
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  • Currently, wired electricity powers nearly everything. It travels through wires in the form of Alternating Current electricity, and powers most of our devices. Wireless trasmission of energy will remove our dependency on wires
  • Tesla coil
  • MIT powered 60 watt light bulb from 2 meters (7 ft) at 40% efficiency
  • Splashpower Ltd. is a United Kingdom-based company founded in June 2001
  • electromagnetic waves are harmless as long as they’re transferred at the right frequency.
  • Need more light in your office, no need for electrician. Simply place the lamp where ever you need it.
  • will this possibly cause Luekemia or some kind of cancer. That fear is always raised about those living near large power transformers and lines. The fear has never been scientifically justified as being true but if this wireless power were in every room in every house in the United States it would be a matter of time before we would possibly know because the numbers of Leukemia patients would probably drastically go up
  • in the macroscopic world, this scheme could potentially be used to deliver power to robots and/or computers in a factory room, or electric buses on a highway (source-cavity would in this case be a ‘‘pipe’’ running above the highway). In the microscopic world, where much smaller wavelengths would be used and smaller powers are needed, one could use it to implement optical inter-connects for CMOS electronics, or to transfer energy to autonomous nano-objects (e.g. MEMS or nanorobots) without worrying much about the relative alignment between the sources and the devices.
  • Transcript of "Witricity"

    1. 1. 08/07/131 WiTricity
    2. 2. TABLE OF CONTENTS  INTRODUCTION  HISTORY  BASICS  WORKING  ADVANTAGES  DISADVANTAGES  CONCLUSION
    3. 3. WHAT IS WITRICITY Electricity without wires 3 08/07/13WiTricity
    4. 4. History of Wireless Power  In 1899, Sir Nikola Tesla Proposed a method of Wireless Power Transmission.  As it is in Radiative mode, most of the Power was wasted and has less efficiency. 4 08/07/13WiTricity
    5. 5. The forgotten invention is reborn in 2007 The idea of wireless electricity has been around since the early days of the Tesla coil. But thanks to a group of MIT scientists, team led by Marin Soljačić and named it "WiTricity" 5 08/07/13WiTricity
    6. 6. There are 3 major types , each with different ranges, methods of transfer – Short range: Inductive Coupling – Medium range: Resonant Induction – Long range: Electromagnetic Wave Power Transfer 6 08/07/13WiTricity
    7. 7. HOW DOES RESONANT INDUCTION WORKS  Same principles as magnetic induction, but uses resonance to increase the range.  Everything resonates at a certain frequency, based on its shape and material.  Energy transfers easily between resonating objects.  With resonant induction, power is transmitted between two resonating coils. 7 08/07/13WiTricity
    8. 8. RESONANT MAGNETIC COUPLING Magnetic coupling occurs when two objects exchange energy through their varying or oscillating magnetic fields. Resonant coupling occurs when the natural frequencies of the two objects are approximately the same. 8 08/07/13WiTricity
    9. 9. WORKING:
    10. 10. 10 08/07/13WiTricity
    11. 11. 11 08/07/13WiTricity
    12. 12. 12 08/07/13WiTricity
    13. 13. WiTricity Technology: The Basics 13 08/07/13WiTricity
    14. 14.  There are witricity power sources(transmitter) and capture devices(receiver).  Power source provides power to the devices where as capture device captured it to work.  Power source and capture devices are specially designed ‘‘strongly-coupled’’ resonators for midrange wireless non-radiative energy transfer 14 08/07/13WiTricity
    15. 15. Witricity Features Highly Resonant Strong Coupling Provides High Efficiency Over Distance Energy Transfer via Magnetic Near Field Can Penetrate and Wrap Around Obstacles  Non-Radiative Energy Transfer is Safe for People and Animals  Flexible Geometry Allows WiTricity Devices to be Embedded Into Different Products 15 08/07/13WiTricity
    16. 16. It will make products : • More Convenient: -No manual recharging or changing batteries. -Eliminate unsightly, unwieldy and costly power cords. • More Reliable: -Never run out of battery power. -Reduce product failure rates by fixing the ‘weakest link’: flexing wiring and mechanical interconnects. • More Environmentally Friendly: -Reduce use of disposable batteries. -Use efficient electric ‘grid power’ directly instead of inefficient battery Charging. Benefits of witricity 16 08/07/13WiTricity
    17. 17. ADVANTAGES  Safe, fairly efficient, good range  Boon for the devices which uses midrange power  No need of line of sight.  No need of power cables and batteries.  Magnetic fields interact weakly with biological masses (humans), and energy is only transmitted between resonating objects 17 08/07/13WiTricity
    18. 18. 08/07/13WiTricity18
    19. 19. DISADVANTAGES  Transmissions possible only in few meters  Possibility of “energy theft”  Efficiency decreases with distance  The resonance condition should be satisfied and if any error exists, there is no possibility of power transfer. 19 08/07/13WiTricity
    20. 20. WITRICITY CONCERNS  Will it harm me?  Will it harm the environment?  Will it interfere with important communication? NO 20 08/07/13WiTricity
    21. 21. APPLICATIONS  Direct Wireless Power—when all the power a device needs is provided wirelessly, and no batteries are required. This mode is for a device that is always used within range of its WiTricity power source.  Automatic Wireless Charging—when a device with rechargeable batteries charges itself while still in use or at rest, without requiring a power cord or battery replacement. This mode is for a mobile device that may be used both in and out of range of its WiTricity power source 21 08/07/13WiTricity
    22. 22. APPLICATIONS  Consumer electronics  Transportation  Industry applications  Other applications – Medical devices – Military applications – Robots 22 08/07/13WiTricity
    23. 23. REFERENCES  http://en.wikipedia.org/wiki/WiTricity  http://www.electricitybid.com/electricity/index.php/  http://www.witricity.com/ 23 08/07/13WiTricity
    24. 24. THANKING YOU 24 08/07/13WiTricity
    25. 25. Features and benefits Witricity’s Technology Technology Benefit Highly resonant strong coupling High efficiency over distance Energy transfer via magnetic near field Can penetrate and wrap around obstacles Non radiative energy transfer Safe for living beings and other environmental objects Flexible geometry Device that can fit into OEM (original equipment manufactures)products Scalable design From Mw to kW 25 08/07/13WiTricity
    26. 26. Long Range Wireless Energy Transmission: Microwave Power Transfer Microwave Power Transfer (MPT) is a form of wave powerMicrowave Power Transfer (MPT) is a form of wave power transfer that sends energy through air in the form oftransfer that sends energy through air in the form of microwaves.microwaves. MPT has a range miles longer than its inductive counterparts,MPT has a range miles longer than its inductive counterparts, and it’s being investigated as a way to beam power to space.and it’s being investigated as a way to beam power to space. 26 08/07/13WiTricity
    27. 27. APPLICATIONS Recently a Canadian program sent up SHARP (Stationary High Altitude Relay Platform), a small unmanned aircraft powered completely by energy beamed to it from the ground through microwaves. Solar Power Satellites (SPS) could also be an application for MPT. Beaming solar energy collected from satellites or solar panels on the moon to Earth could be a solution to our clean energy issues. 27 08/07/13WiTricity
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