1. PRESENTATION ONPRESENTATION ON
WirelessElectricity TransmissionWirelessElectricity Transmission
GOURAV KUMAR PRADHANGOURAV KUMAR PRADHAN
Dr. MGR University ChennaiDr. MGR University Chennai
EEE DepartmentEEE Department
2. OutlineOutline
• Introduction.Introduction.
• Background.Background.
• Microwave Power Transmission And ReceptionMicrowave Power Transmission And Reception
Technique.Technique.
• Current Design of Rectenna.Current Design of Rectenna.
• Advantage of Using Microwaves For WirelessAdvantage of Using Microwaves For Wireless
Electricity Transmission.Electricity Transmission.
• System Losses Of Wired ElectricitySystem Losses Of Wired Electricity
Transmission.Transmission.
• Advantages Of Wireless ElectricityAdvantages Of Wireless Electricity
Transmission.Transmission.
• Disadvantages Of Wireless ElectricityDisadvantages Of Wireless Electricity
Transmission.Transmission.
• Issues And Conclusions.Issues And Conclusions.
3. •Wireless Electrical Transmission as the name showsWireless Electrical Transmission as the name shows
is the Transmission of Electrical Energy withoutis the Transmission of Electrical Energy without
wires to any place on Earth. Even to the most remotewires to any place on Earth. Even to the most remote
areas.areas.
•The Electrical energy is first converted intoThe Electrical energy is first converted into
Microwaves then beamed to a GeosynchronousMicrowaves then beamed to a Geosynchronous
satellite and Beamed back on Earth where neededsatellite and Beamed back on Earth where needed
and converted back to electrical energy. Where it canand converted back to electrical energy. Where it can
be used to power Electrical Equipments.be used to power Electrical Equipments.
IntroductionIntroduction
4. BackgroundBackground
Nikola Tesla (1856-1943) The Father of WirelessNikola Tesla (1856-1943) The Father of Wireless
Electricity.Electricity.
Tesla's many inventions include
high-frequency generators
(1890) and the Tesla coil
(1891), a transformer with
important applications in the
field of radio communications
5. InnovationsInnovations
• Alternating Current.Alternating Current.
• Wireless Power Transmission Experiments atWireless Power Transmission Experiments at
Wardenclyffe.Wardenclyffe.
In 1899 Nikola Tesla was able toIn 1899 Nikola Tesla was able to
light lamps over 25 miles away without using wires. Alsolight lamps over 25 miles away without using wires. Also
the high frequency current of tesla coil, could light lampsthe high frequency current of tesla coil, could light lamps
filled with gas (like Neon).filled with gas (like Neon).
1940s to Present1940s to Present
• World war II developed ability to convert energy toWorld war II developed ability to convert energy to
microwave using magnetron but no method to convertmicrowave using magnetron but no method to convert
microwave back to electricity.microwave back to electricity.
• In 1964 William. C Brown demonstrated a RectennaIn 1964 William. C Brown demonstrated a Rectenna
which would convert Microwaves Power to Electricity.which would convert Microwaves Power to Electricity.
7. Microwaves generated using the Magnetron from the base stationMicrowaves generated using the Magnetron from the base station
can be received at any location on Earth with the help ofcan be received at any location on Earth with the help of
Geosynchronous Receiving and Transmitting Satellites.Geosynchronous Receiving and Transmitting Satellites.
Advantages of Low Orbit And Geosynchronous Satellites:Advantages of Low Orbit And Geosynchronous Satellites:
* These satellites will use microwaves to beam power to the* These satellites will use microwaves to beam power to the
receiving station and mobile power receiving devices.receiving station and mobile power receiving devices.
* Since The low Orbit Microwave Beam Would spread less, the* Since The low Orbit Microwave Beam Would spread less, the
ground based Rectenna could be smaller.ground based Rectenna could be smaller.
Microwave Power Transmission And ReceptionMicrowave Power Transmission And Reception
TechniqueTechnique
Recent Developments Suggest that power could be sent toRecent Developments Suggest that power could be sent to
Earth using Laser also.Earth using Laser also.
The power can be received at Rectenna which will be located onThe power can be received at Rectenna which will be located on
Earth, Comprising a mesh of dipoles and diodes for absorbingEarth, Comprising a mesh of dipoles and diodes for absorbing
microwave energy from a transmitter and converting it back intomicrowave energy from a transmitter and converting it back into
electrical power. 95% of the Microwave Beam will fall on theelectrical power. 95% of the Microwave Beam will fall on the
Rectenna.Rectenna.
Location of RectennaLocation of Rectenna :: The Rectenna should be located nearThe Rectenna should be located near
8. Rectenna DesignRectenna Design
• 5000 Mw Receiving Station (Rectenna).5000 Mw Receiving Station (Rectenna).
This station is about a Mile and Half long.This station is about a Mile and Half long.
• The Rectenna Would be Visually Transparent so that itThe Rectenna Would be Visually Transparent so that it
would not interfere with Plant life.would not interfere with Plant life.
9. Advantages of Using Microwaves forAdvantages of Using Microwaves for
Wireless Electricity TransmissionWireless Electricity Transmission
• High Efficiency Up to 85% .High Efficiency Up to 85% .
• Power Level is Well Below International safety standard.Power Level is Well Below International safety standard.
• Beam is far below the lethal levels of concentrations evenBeam is far below the lethal levels of concentrations even
for a prolonged exposure.for a prolonged exposure.
• Frequency is up to 2.45 GHz of the Micro Beam.Frequency is up to 2.45 GHz of the Micro Beam.
• Retro-directive Beam Control capability.Retro-directive Beam Control capability.
• No Air Or water Pollution is Created.No Air Or water Pollution is Created.
• During Generation power can be Beamed to the locationDuring Generation power can be Beamed to the location
Where it is needed.Where it is needed.
• We don’t have to invest in a large Electrical Grid.We don’t have to invest in a large Electrical Grid.
• If Microwave Beams Carrying power could be beamedIf Microwave Beams Carrying power could be beamed
uniformly over the earth they could power cell phones, butuniformly over the earth they could power cell phones, but
the antenna length should be 25-30 cm square.the antenna length should be 25-30 cm square.
10. System Losses Of Wired Electricity TransmissionSystem Losses Of Wired Electricity Transmission
36.3GJ Electricity Grid
10%
Distribution/
Transmission
32.7 GJ
Customer
Power
Supply 40%
19.6 GJ
We lose, on average, 80% of the
energy we extract when using it for
electronic products
11. Advantages Of Wireless Electricity TransmissionAdvantages Of Wireless Electricity Transmission
• Power Loss is very less as compared to WiredPower Loss is very less as compared to Wired
Electricity Transmission.Electricity Transmission.
• There is no need of Transmission Lines.There is no need of Transmission Lines.
• Health and Environmental Experiments claim thatHealth and Environmental Experiments claim that
Wireless Electricity Transmission Using MicrowavesWireless Electricity Transmission Using Microwaves
and laser is safe.and laser is safe.
12. Disadvantages of wireless ElectricityDisadvantages of wireless Electricity
TransmissionTransmission
• The Size of Rectenna will be Massive.The Size of Rectenna will be Massive.
• Would Require a Network of hundreds ofWould Require a Network of hundreds of
satellites.satellites.
• The Cost of this Prototype Project Will BeThe Cost of this Prototype Project Will Be
$74 Billion approx.$74 Billion approx.
• Interference with other Electronic DevicesInterference with other Electronic Devices
will be there.will be there.
13. IssuesIssues
• More Reliable Than Ground Based Solar PowerMore Reliable Than Ground Based Solar Power
Generation.Generation.
• More Reliable Than Wired Electricity Transmission.More Reliable Than Wired Electricity Transmission.
• In Order To Have Wireless Electricity Transmission ToIn Order To Have Wireless Electricity Transmission To
Become a Reality, Following Things Have To Happen:Become a Reality, Following Things Have To Happen:
#Government Support.#Government Support.
#Cheaper Launch Prices.#Cheaper Launch Prices.
#Involvement Of The Private Sector.#Involvement Of The Private Sector.
• Who will Fund?Who will Fund?
NASA:NASA: Funding The research, in charge of space flightFunding The research, in charge of space flight
for the United States Of America.for the United States Of America.
NASA:NASA: Would be launching the satellites and doingWould be launching the satellites and doing
Maintenance.Maintenance.
ConclusionConclusion
