Wireless Electricity Transfer
-
Upload
srijan-singh-tudu -
Category
Documents
-
view
223 -
download
1
Transcript of Wireless Electricity Transfer
-
8/12/2019 Wireless Electricity Transfer
1/21
WIRELESS ELECTRICITY
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
2/21
In this paper
1) What do you mean by Witricity ?
2) Need of Witricity.3) History of wireless power.4) Techniques to Transfer
5) Application , Pros and cons.
6) Future and conclusion.www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
3/21
What is Witricity ?
Obvious definition is :Transmission of energy through the air
Cables are going to replaced by WiTricity
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
4/21
Why do we need wirelesselectricity???
The need of electricity in every nook and
corner of the world
The demand of eco-friendly power
Requirement of efficient and reliable power
To reduce dependence on wires and batteries
The ever increasing power demand
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
5/21
Wireless electricity wayback in the 1800s..
In the year 1891,Nikola Teslaproposed the method ofwireless transmission of electric
power
One of the greatest breakthroughsof science at that time
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
6/21
Built the wardenclyffe towerwhich could broadcast powerwirelessly using far-field
techniques. Called off as itradiated power intosurroundings raising issues ofpower loss Power theft Health concerns
The Wardenclyffe Tower
A dream crashes www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
7/21
Types of wireless energy transfer
techniques are:-
Short range-InductiveCoupling
Mid range-ResonanceInductive Coupling
Long range MicrowaveTransmission
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
8/21
INDUCTIVE COUPLING
Uses Electromagnetic Induction concept Primary and secondary coils are not connectedwith wires. Energy transfer is due to Mutual Induction This method works only when receiver is inclose proximity to the transmitter
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
9/21
Inductive coupling
Uses Electromagnetic Induction concept
Oscillating electric field produces magnetic field andoscillating magnetic field produces electric field.
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
10/21
-
8/12/2019 Wireless Electricity Transfer
11/21
Different Frequency
Resonance
Property of systems to operate at higher amplitudes at particularfrequencies known as resonant frequencies than at others.
When 2 objects operate at same resonant frequency they transfer energyefficiently between them without interfering with the off resonant objects.
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
12/21
Different Frequency
The glass which was having the resonant frequencyas of the singers voice accumulated sufficientenergy to explode eventually
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
13/21
Different Frequency
The glass which was having the resonant frequencyas of the singers voice accumulated sufficientenergy to explode eventually
The setup powered the bulb even when coilswere not in line of sight .The bulb glowed evenwhen wood, metal and other devices wereplaced in between the coils
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
14/21
Microwave Transmission
Aims at higher power transfer over longer distancespractically in the range of some milesRequires a microwave source, antenna and rectenna. Steps :
1.conversion of electrical to microwave energy2.Capturing of microwave beams by Rectenna3.conversion of microwave to electrical energy
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
15/21
SOLAR POWER SATELLITES:
The most imp. Application or advancement:absorb light energy from sun. converted to electric energy and beamed to earth stations in form ofmicrowave beamsso it can power satellites,aircrafts,even supply electricity to placeswhere wired connections are not possible at lower prices.
Applications of long range transmission
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
16/21
Image of a Rectenna in US with diameter of about half a milewhich is important as 95% of the microwave power is receivedby rectennas.US receives about 5000MW of power as a result.
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
17/21
Applications
Demo 1:Charging Electric Car usingWitricity .
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
18/21
Demo 2:
Charging the mobiles and laptops usingPOWERMAT
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
19/21
Advantages:
Disadvantages:
1. Efficient and reliable power.
2. Creation of a shock free environment devoid of any chancesof power thefts.3. Provides solution to the ever increasing demand for power.4. A solution to reduce e-waste- a more safe environment.5. A more cost effective methodology for getting electricity toyour houses which includes paying less for use of power.
1.For short and mid range transfer system has to be set at theright frequency or there would be no power transfer.2.For long range the installation cost is high while themicrowaves will cause harmful effects to the human.
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
20/21
Future and Conclusion
Transmission without wires- a reality Energy crisis can be decreased In near future, world will be completely wireless
www.freepptpresentation.com
-
8/12/2019 Wireless Electricity Transfer
21/21