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A Power point presentation by, SHUBHAM SINGHEE 3rd Year,1173720053,MKECIT,AMBEDKAR-NAGAR
TOPICS TO BE DISCUSSED
1. INTRODUCTION
2. BASIC PRINCIPLE
3. WORKING
5. EFFICIENCY
6. DEVELOPMENT OF WITRICITY7. ADVANTAGES
8. LIMITATIONS
9. SCOPE10.THE FUTURE ASPECTS
4. EXPERIMENTAL SETUP
INTRODUCTION
WITRICITY is the transfer of electricity from one place to another without interconnecting wires.
WITRICITY is a Combination of words for expressing Wireless Transmission of Electricity.
Allows power to cross distances even when there is no physical connection between the power source and the object to be charged.
WHAT IS WITRICITY???
BASIC PRINCIPLE INVOLVED
PRINCIPLE OF WIRELESS TRASMISSION OF ELECTRICITY
MAGNETICALLY COUPLED RESONANCE
Two resonant objects of the same resonant frequency tend to exchange energy efficiently, while interacting weakly with extraneous off-resonant objects
MAGNETICALLY COUPLED RESONATORS
The system involves two electromagnetic resonators coupled through their magnetic fields.
This enabled efficient power transfer, even when the distance between them was several times larger than the sizes of the resonant objects.
WORKING
How Wireless Electricity Works
The oscillating current inside the transmitting coil causes the coil to emit a magnetic field.
A circuit A attached to the power supply supplies power to the transmitting coil B.
The setup requires two identical coils with one coil connected to a load,like a bulb.
The receiving coil C has the exact same dimensions as the sending coil B and thus resonates at the same frequency and due to a process called magnetic induction voltage is induced in coil C.Thus,coil C picks up the energy of the coil B’s magnetic field.
The energy of the oscillating magnetic field induces an electrical current in the receiving coil, lighting the bulb D.
EXPERIMENTAL SETUP
EXPERIMENTAL SETUPSimulate a transfer of 60W across two identical loops similar in dimension.The coils had a radius of 30 cm,with a cross section of 3cm and distance between the coils was 200m.
Transmission of electricity is occurring inspite of the obstruction in between.
An alternate view of the previous picture.
EFFICIENCY
We determine the efficiency of transfer of energy taking We determine the efficiency of transfer of energy taking place between the source coil and the load by measuring the place between the source coil and the load by measuring the current at the midpoint of the each coils with a current current at the midpoint of the each coils with a current probe.probe.
EFFICIENCY OF WITRICITY
DEVELOPMENT OF WITRICITY
Is WITRICITY an entirely new concept?
Wireless power transmission is not a new idea.Dr.Nikola Tesla demonstrated a "transmission of electrical energy without wires" that depends upon electrical conductivity as early as 1891.
DEVELOPMENT OF WITRICITY
The Tesla effect (named in honor of Tesla) is the term for an application of the wireless movement of energy through space and matter, not just the production of voltage across a conductor.
Dr. Nikola Tesla shows us that he is indeed the “Father of the Wireless”
Starting in 1901, Tesla made Wardenclyffe Tower Project for wirelessly sending industrial amounts of energy on large-scale.
“ Ere many generations pass, our machinery will be driven by a power obtainable at any point of the universe ”.
William C.Brown
He showed how power can be transferred through free space by microwaves.
INVENTOR OF WITRICITY
The experiment involving the discovery of WITRICITY was led by MIT physics professor Marin Soljacic and was reported on the June 7,2007.
From left to right: Soljacic, Karalis, and Joannopoulos, with a figure from their paper in the background.
ADVANTAGES OF WITRICITY
Say good bye to wires…
ADVANTAGES OF WITRICITY
NO POWER CORDS
The electrical energy can be transmitted without wires, so there will be no need of power cords.
LOW POWER LOSS
Due to absence of conventional wiring system,transmission losses are very low.
PROVIDES EARTH FREE SUPPLY
Reduces chances of electric shock.
CONVENIENT
No need for external wiring so no need for electrician.
No meter rooms and electrical closets required.
NO TRANSFORMER NEEDED
It eliminates the need of Step Down Transformers.
Shockless life..
LIMITATIONS
LIMITATIONS OF WITRICITY
EXPENSIVE
Retrofitting old equipment or purchasing new equipment could become a very expensive endeavor.
ENERGY THEFT
Possibility of energy theft.
DISTANCE
This technique can transmit electricity for short distances.
Employed in cases where instantaneous and continuous transfer of power is needed.
SCOPE OF WITRICITY
To overcome situations where normal cabling is difficult or financially impractical
THE FUTUREWITHIN NEXT 10 YEARS
Short distance induction
Cell phones
Batteries
Laptop Computers
Mp3 players
Artificial hearts.
After 50 Years – Moderate distance Induction Household robots Cars
After 100 Years – Long distance Airplanes
THANK YOU
QUERIES???