SEMINAR ONWireless Electricity

Transmission

Outline

• Introduction.

• Background.

• Microwave Power Transmission And Reception Technique.

• Current Design of Rectenna.

• Advantage of Using Microwaves For Wireless Electricity Transmission.

• System Losses Of Wired Electricity Transmission.

• Advantages Of Wireless Electricity Transmission.

• Disadvantages Of Wireless Electricity Transmission.

• Issues And Conclusions.

•Wireless Electrical Transmission as the name shows

is the Transmission of Electrical Energy without wires

to any place on Earth. Even to the most remote

areas.

•The Electrical energy is first converted into

Microwaves then beamed to a Geosynchronous

satellite and Beamed back on Earth where needed

and converted back to electrical energy. Where it can

be used to power Electrical Equipments.

Introduction

BackgroundNikola Tesla (1856-1943) The Father of Wireless Electricity.

Tesla's many inventions includehigh-frequency generators(1890) and the Tesla coil(1891), a transformer withimportant applications in thefield of radio communications

Innovations• Alternating Current.

• Wireless Power Transmission Experiments at Wardenclyffe.

In 1899 Nikola Tesla was able to light lamps over 25 miles away without using wires. Also the high frequency current of tesla coil, could light lamps filled with gas (like Neon).

1940s to Present

• World war II developed ability to convert energy to microwave using magnetron but no method to convert microwave back to electricity.

• In 1964 William. C Brown demonstrated a Rectennawhich would convert Microwaves Power to Electricity.

Wireless Electricity Transmission And Reception

Using Microwaves

Microwaves generated using the Magnetron from the base station can be

received at any location on Earth with the help of Geosynchronous

Receiving and Transmitting Satellites.

Advantages of Low Orbit And Geosynchronous Satellites:

* These satellites will use microwaves to beam power to the receiving

station and mobile power receiving devices.

* Since The low Orbit Microwave Beam Would spread less, the ground

based Rectenna could be smaller.

Microwave Power Transmission And Reception Technique

Recent Developments Suggest that power could be sent to Earth using Laser also.

The power can be received at Rectenna which will be located on Earth, Comprising a mesh of dipoles and diodes for absorbing microwave energy from a transmitter and converting it back into electrical power. 95% of the Microwave Beam will fall on the Rectenna.

Location of Rectenna: The Rectenna should be located near population center to facilitate the transmission of electricity.

Rectenna Design

• 5000 Mw Receiving Station (Rectenna). This station is about a Mile and Half long.

• The Rectenna Would be Visually Transparent so that it would not interfere with Plant life.

Advantages of Using Microwaves for

Wireless Electricity Transmission

• High Efficiency Up to 85% .

• Power Level is Well Below International safety standard.

• Beam is far below the lethal levels of concentrations even for a prolonged exposure.

• Frequency is up to 2.45 GHz of the Micro Beam.

• Retro-directive Beam Control capability.

• No Air Or water Pollution is Created.

• During Generation power can be Beamed to the location Where it is needed.

• We don’t have to invest in a large Electrical Grid.

• If Microwave Beams Carrying power could be beamed uniformly over the earth they could power cell phones, but the antenna length should be 25-30 cm square.

System Losses Of Wired Electricity Transmission

36.3GJ Electricity Grid

10%

Distribution/

Transmission

32.7 GJCustomer

Power

Supply 40%

19.6 GJWe lose, on average, 80% of the

energy we extract when using it for

electronic products

Advantages Of Wireless Electricity Transmission

• Power Loss is very less as compared to Wired

Electricity Transmission.

• There is no need of Transmission Lines.

• Health and Environmental Experiments claim that

Wireless Electricity Transmission Using Microwaves

and laser is safe.

Disadvantages of wireless Electricity Transmission

• The Size of Rectenna will be Massive.

• Would Require a Network of hundreds of

satellites.

• The Cost of this Prototype Project Will Be

$74 Billion approx.

• Interference with other Electronic Devices

will be there.

Issues

• More Reliable Than Ground Based Solar Power Generation.

• More Reliable Than Wired Electricity Transmission.

• In Order To Have Wireless Electricity Transmission To Become a Reality, Following Things Have To Happen:

#Government Support.

#Cheaper Launch Prices.

#Involvement Of The Private Sector.

• Who will Fund?

NASA: Funding The research, in charge of space flight for the United States Of America.

NASA: Would be launching the satellites and doing Maintenance.

Conclusion

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