17231408 wireless electricity

7/29/2019 17231408 Wireless Electricity

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WITRICITY

ORWIRELESS ELECTRICITY

Submitted By

Ganesh ,Sabin,Rajesh,Vishnu

KERALA UNIVERSITY , INDIA


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,

Project Overview

Prove that wireless energy transfer ispossible

Power a LED wirelessly by magneticinduction


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How it would look and work in your office orbedroom


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Wireless Energy System Specifications

Safety Operates at 1.35 Mhz

Long Distance Transfer Full efficiently at 30 cm


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Engineering Specificationsand Principles

Magnetic Induction Short distance magnetic

resonances

Transmitter Copper Coil

Transmission

signal 1.35 MHz

Receiver Copper coilOutput Nearly 1 watt


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Working

i l l i i


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How wireless electricityworks?

Two copper coils wereset up-one at thesender end and oneat receiver end'. Thesender coil wasattached to the power

source, while thereceiver coil wasattached to the lightbulb.

When turned on ,thesender coil emitselectricity in the formof a magnetic field,oscillating at a specificfrequency.

The receiver coil picksup the transmission,while the rest of the


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Our experimental realization of the schemeconsists of two self-resonant coils.

One coil (source coil) is coupled inductively to anoscillating circuit, the other (device coil) isinductively to a resistive load. Self resonant coilsrelay on the interplay between distributed

inductance to achieve resonance.

The two coils are made up of an electricallyconducting wire of total length l and crosssectional area a, wound into a helix of n turns,radius r & height h.

Using electromagnetic theory, we can define aneffective inductance L and an effective

capacitance C for each coil as follows:-


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Frequency oscillator

Input voltage is 5 V D.C Outputs A.C current at the desired

frequency.

Creates an electromagnetic energy.

Inductance Of Coils

F=1/2* (LC)C=100pF


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Principle of Primary Coil

ProjectingMagneticField

HudBd =

Magnetic Vector Equation


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Principle of Receiving Coil

The Changing in

Flux createsan induced emf

= sdBNVemfdt

d

Induced Voltage


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Safety

Two Classes ofRadiation


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We then compute power dissipated in each coilfrom:-

Then the efficiency can be calculated .

Graph between efficiency and distance.


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ADVANTAGES

The main advantages of this system is thatwe can get electricity anywhere withoutwires.

The nature of power delivery is omnidirectional i.e. in every direction. Magnetic resonances are particularly

suitable for everyday application because

most of the common materials do notinteract with magnetic fields, sointeractions with environmental objectsare suppressed even further.


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Is it practical and is it safe?

Witricity demonstration is still too recent, and toofocused, to produce any definite conclusions.

With the witricity method ,they anticipatetransmitting power over distances about a meter,

which is much less than ideal but still veryimpressive.

If the technology is improved and honed to apoint where it can be productized", it stands toturn any number of industries on their respective

ears. Its discovery is different from all previous effort

because it uses magnetically coupledresonance", which means it will not only be safebut it will be fairly efficient.


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Product In Our Idea

Wireless technology will expand currentelectronics market

Wireless

Convenient Portable


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WORLD IN OUR DREAM


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Thank you

Sabin S Babu

Ganesh Kailas

Rajesh RVishnu Vijayan

17231408 wireless electricity

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