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Slide 1

1.jpeg Session 2012-13

G. H. RAISONI ACADEMY OF ENGINEERING & TECHNOLOGYNAGPUR

PRESENTED BYShivani KumbhalkarMaitreye Jha(3rd year BE )PRESENTATION ON

Microwave A Next Generation Power Transmission System

Department Of Electronics & Communication Engineering

Outline

Introduction

Why WPT is required?

Inventor of WPT

Wireless power transmission system

Advantages

Disadvantages

Applications

Biological impact

References

INTRODUCTION

In our present electricity generation system we waste more than half of its resource. Especially the transmission and distribution losses are the main concern of the present power technology.

The transmission & distribution system causes a loss of 26% to 30% of the energy generated.

The transmission of power without wires may be one noble alternative for electricity transmission.

The losses occurs during the transmission and distribution of electrical power is more.

Power loss due to resistance of wires used for grid.

Indian government agencies put that number at 30%, 40% and greater than 40%.

Power theft at distribution level.

WHY WPT IS REQUIRED?

-Losses during occurs transmission and distribution Bcz of resistance of wire used for grid

Losses are approximated as 26%

Wri

Indian gov agencies

1856-1943

Innovations:

Wireless power transmission experiments at Wardenclyffe

Concept of WPT is depends on electrical conductivity

NIKOLA TESLA(Inventor of WPT)

Nikola Tesla in front of one of his coils

William C. Brown, the pioneer in wireless power transmission technology.

Developed a unit and demonstrated to show how power can be transferred through free space by microwaves.


WIRELESS POWER TRANSMISSION SYSTEM

F:\Shivani Documents\paper presentation\wirelesspower01.jpg

Microwave Power SourceCoax-Waveguide AdaptorWaveguide CirculatorTuner & Directional CouplerTransmitting Antenna

Load

Schottky BarrierDiode

Coax-Waveguide Adaptor

Impedance Matching & Filter Ckt.

Receiving Antenna

Microwave on Free Space

FUNCTIONAL BLOCK DIAGRAM OF WIRELESS POWER TRANSMISSION SYSTEM

ADVANTAGES OVER A WIRED TRANSMISSION SYSTEM.

WPT system would completely eliminates the existing high-tension power transmission line cables, towers and Sub-stations.

It facilitates the interconnection of electrical generation plants on a global scale.

Can reach the places which are remote.

High Efficiency and maintenance Low cost.

Power Theft will be negligible.

High tension power transmiting lines linesPower failure due to short ckt eliminated

DRAWBACKS OF WPT

Interference of microwave with the current communication system.

Failure in signal & Path loss

Supports short distance only.

The capital cost for practical implementation of WPT seems to be very high.

Concept of interference wid current communication systemCapital cost set up is too highIts supports for short dis only

BIOLOGICAL IMPACTS

WPT has the slightly Higher emission than the currently used cellular telephones .

It is below the safety guidelines ANSI/IEEE exposure standards as of cellular telephones.

F:\Shivani Documents\paper presentation\nikola-tesla-magnifying-transmitter.jpgBut mcrowave radiation dose wud nvr b as high as radiation frm opening a microwave oven

APPLICATIONS

Wireless Power Source.

Wireless sensors

Wireless power technology.

Electric toothbrush.

Use of fuel replaced by Electrical Power

Electric vechiles n solar power satelites

http://www.ssi.org/assets/images/SPS_summary.jpgPower Can Be Generated By Solar Power Satellite(sps).

Geostationary earth orbit

Wireless power transmission & reception using microwaves

Placing satelites in giant solar arrays in geostationary earth orbit

Stationary High Altitude Relay Platform (SHARP)LONG DISTANCE WIRELESS POWER TRANSMISSIONCarried out by Communication Research Center at Canada during the year 1980.

Designed an unmanned plane by the name Stationary High Altitude Relay Platform (SHARP).

It was also designed to fly without rest or battery backup for months.

Communication research centre in canada designed sharp an airplane which cud fly at a ht of 21 km in radius of 1km widout rest or battery backup 4 months.

C:\Users\Rahul\Desktop\Shivani\overheadno.jpgFUEL FREE ELECTRIC BUS

C:\Users\Rahul\Desktop\Shivani\busstop.jpgTrolley Powered With Wireless Power Transmission

References

Nikola Tesla, My Inventions, Ben Johnston, Ed., Austin, Hart Brothers, p. 91,1982.

Nikola Tesla, The Transmission of Electrical Energy Without Wires as a Means for Furthering Peace, Electrical World and Engineer. Jan. 7, p. 21, 1905.

W.C. Brown, J.R. Mims and N.I. Heenan, An Experimental Microwave-Powered Helicopter, 965 IEEE International Convention Record, Vol. 13, Part pp.225-235.

Brown., W. C. (September 1984). "The History of Power Transmission by Radio Waves". Microwave Theory andTechniques, IEEE Transactions on (Volume: 32, Issue: 9 On page(s): 1230- 1242 + ISSN: 0018-9480).

Thank YouThank You

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