Wireless Transfer of power

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Under the guidance of
Miss. PREETHI.V
BY-
ABHISHEK
ASHUTOSH NARAYAN
ARKA PRAVA SINHA
SUMIT SAURABH

2. WHAT IS WITRICITY
• Transfer of electricity without using
connections between input and load is
termed as wireless electricity.
• It was invented by Nikola Tesla in 1890.
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3. Now-a-days there is a rapid increase of electronic goods
like cell phones ,laptops ,I-pods etc., which rely on
the chemical storage of energy by the battery which
need to be recharged frequently
The term WiTricity was used for a project that took place
at MIT, led by Marin Soljacic in 2007.
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It is based on simple physics principle that
“Energy can be transferred wirelessly by
utilizing magnetically coupled resonance”.
Strong coupling between electromagnetic
resonant objects causes transferring of
energy wirelessly between them

5. MIT EXPERIMENT
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source
(primary side)
Device
(slave side)
Primary
coil
Secondary coil

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•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.
•Scalable Design Enables Solution from milli
watts to Kilowatts.

8. significant reduction of office space
Reduction of e-waste.
More convenient.
.
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 Possibility of “Energy theft”
Retrofitting old equipment
Expensive

9. Witricity Vs Radiative
power transfer
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•Witricity technology for power transfer is non radiative and
relies on near magnetic field.
•Most of the radio station use radio frequency waves that
needs to be amplified at receiving station.
•Some of the wireless energy transfer relies on line of sight
transmission way,but it is not so in case of witricity.

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•We can envisage a future in which the world of
wireless arrives with witricity
•WITricity corp. is working to make this future a
reality,developing wireless electricity technology that
will operate safely and efficiently over long distance
ranging from m to km and will deliver power ranging
from mW to kW.