This presentation about Wireless Power Transfer

1. A world without wires
Студент гр.144М: Бакытбек Е.
Преподаватель: Лингвист-преподаватель Потапова Т.Н.

2. Content:
1. Early visions
2. Problems in power transmission
3. Solution of the problem
4. How it works?
5. Safety
6. Areas of use

3. Early visions of Wireless Power
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4. We Humans Love Electricity!
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5. We Humans Love Electricity!
And to power our mobile devices we buy:
40 BILLION disposable batteries/year!
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6. • Verb 1 draw into the mouth by contracting the
lip muscles to make a partial vacuum. 2 hold
(something) in the mouth and draw at it by
contracting the lip and cheek muscles. 3 draw
in a specified direction by creating a vacuum. 4
(suck in/into) involve (someone) in something
without their choosing. 5 (suck up to) informal
attempt to gain advantage by behaving
obsequiously towards. 6 N.Amer. Informal: be
very bad or disagreeable.
suck
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7. Wires . . . “suck”7

8. Batteries . . . “suck”8

9. Batteries . . . “suck”9

10. Batteries . . . “suck”
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11. Bur things that “suck” . . .
create a vaccum . . .
. . .and nature abhors a vaccum!
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12. MIT Physicists Invent Witricity!
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13. MIT Experiment
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14. WiTricity Technology:
Resonant Energy Transfer
• Resonance
- Efficient energy exchange
between tuned resonant object.
- Very little energy transferred to
extraneous or off-resonant objects.
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15. How WiTricity Technology Works
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16. How WiTricity Technology Works
A “power capture coil” is
brought within range of
the power source coil
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17. How WiTricity Technology Works
• The magnetic field induces
current in the capture coil, and
a magnetic field around it
• The magnetic fields of the two
coils couple tightly, and
transfer power efficiently
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18. What About Safety?
• Non-radiative power transfer – uses magnetic
near field
• Magnetic fields are safe for people and animals
• Highly resonant coupling minimizes energy
transfer to “off-resonant” objects
• WiTricity systems are designed to meet int’l
safety guidelines
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19. Mobile Electronics Applications
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20. Home Electronics Applications
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21. Desktop Electronics Applications
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22. Industrial Applications
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23. Electric Cars are BEAUTIFUL
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24. …but are charging cords?
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25. Other Applications
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27. Thank you all for listening =)