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Its all about clean

energy

technologies

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The transmission of power without wires for electricity transmission.

Any system where electromagnetic energy is transmitted from a power

source (such as a Tesla coil) to an electrical load, without interconnecting

wires.

Wireless transmission is employed in cases where interconnecting wires are

inconvenient, hazardous, or impossible.

There is a distinction from electromagnetic transmission for the purpose of

transferring information (radio), where the amount of power transmitted is

only important when it affects the integrity of the signal.

INTRODUCTION

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History of Wireless Power

In 1899, Sir Nikola Tesla Proposeda method of Wireless PowerTransmission.

As it is in Radiative mode, most of

the Power was wasted and has less

efficiency.

The efficient midrange power transfer

concept is Witricity. In this model source

and load are in Magnetic resonance so

there is no power loss.

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WET has been around since about

1856 in the form of mutual induction.

As wireless telecommunications

technologies were being developed

during the early 1900s.

At the St. Louis World's Fair (1904), a

prize was offered for a successful

attempt to drive an 0.1 Horsepower air-

ship motor by energy transmitted

through space at a distance of least 100

feet. The Electrician (London),

September 1902.

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BasicPrinciple

The basic principle involved in Witricity concept is, Two

objects having same resonating frequency and in Magnetic

resonance at Strongly coupled regime tend to exchange energy ,

while dissipating relatively little energy to the extraneous off-

resonant objects.

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basics

electricity

magnetism

Energycoupling

Magneticinduction

Electro

magnetism

Resonant

magnetic

coupling

resonance

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Electromagnetic induction.

Electromagnetic radiation.

Evanescent wave coupling.

Break down of Evanescent wave coupling.

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Resonant work coil (receiver)

40 Watts Bulb(load)

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WORKINGIt is divided into three parts:

PART I

Based on Faradays theory when coil is in magnetic field current is found in thecoil via External coil & Internal coil.

External unitIncreasing frequency power generator n/w supply 100 watts of power

& drive current through primary coil.

Capacitor is used for impedence matching for transfering maximum

power

Internal unit It includes energy coupling antenna, resonant ckt, rectifier ckt andload

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Through External unit energy is transmitted

and received by receiving coil both at

resonance.

OUTPUT CURRENT EQUQTION:

When n=120r=0.004mf=2106MHzN5R0.2m

W0.05mD0.04m

It is calculated that Ip =3.7A.

This is the minimum current required at the o/p.

PART II

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PART III

This tank ckt (Colpitts oscillator) is variable

frequency oscillator which produces sinosoidal o/p

voltage.

220Vbridge

rectifier

Colpitts

oscillator &

current

limiting ckt

IGBT

Impedence

matching

n/w

Resonant

working

coil Tx

Rx work coilLoad

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Technology BenefitWiTricity's Technology

High Efficiency Over DistanceHighly Resonant StrongCoupling

Penetrates and Wraps-Around

Obstacles

Energy Transfer via Magnetic

Near Field

Safe for People, Animals andother environmental object

Non-Radiative Energy

From Milliwatts to KilowattsScalable Design

Devices That Can Fit Into OEM(original equipment

manufactures)Products

Flexible Geometry

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Automatic wireless charging of mobile electronics in home, car,office,...while devices are in use and mobile.

Direct wireless powering of stationary deviceseliminating

expensive custom wiring, unsightly cables and wall-wart powersupplies.

CONSUMER ELECTRONICS

INDUSTRIAL

Robots, package machinery, assembly machinery, machine tools.

Direct wireless power and communication interconnections at points of usein harsh environments.

Direct wireless power for wireless sensors and actuators, eliminating the

need for expensive power wiring or battery replacement and disposal.

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Direct wireless power interconnections and automatic wirelesscharging for implantable medical devices .

Automatic wireless charging and for high tech military systems.

Direct wireless powering and automatic wireless charging of

smartcards.

Direct wireless powering and automatic wireless chargingofconsumer Appliance, mobile robots, etc.

Transportation

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No need of line of sight.

No need of power cables andbatteries.

Does not interfere with radio waves.

Wastage of power is small .

Negative health implications.

Highly efficient than electromagnetic

induction

Less costly.

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Wireless power transmission can be possible

only in few meters.

Efficiency is only about 40%.

Initial cost is very high..

Asthe frequency is very small and such afrequency is very biologically compatible .

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The transmission of power without wires is not a

theory or a mere possibility, it is now a reality.

The electrical energy can be economicallytransmitted without wires to any terrestrial

distance.

Many researchers have established in numerous

observations, experiments and measurements,

qualitative and quantitative. Dr.N.Tesla is the

pioneer of this invention.

Dr. N.Tesla

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An article published in the Science Magazine as Wireless PowerTransfer via Strongly

Coupled Magnetic Resonances by Andre kurs, Science 317,83(2007); Dol:10.1126/ science.1143254,2007.

Efficient Non-Radiative Midrange Energy Transfer by Aristeidies

karalis, Marlin Soljacic,2006.

IEEE Spectrum, May 2009

www.witricity.com

http://www.WiTricitypower.com

http://www.sciencemag.org/cgi/data/1143254/DC1/1

http://www.sciencemag.org/cgi/content/abstract/1143254

http://www.breakingnewsenglish.com/0706/070613-WiTricity.html

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Submitted By:-

Anurag Burman

Jayant Mukherjee

Kalyani Chourasiya

Shubhangi Agrawal

Swati Singh

Nitesh Prajapati

THANK YOU!

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