wireless power transfer by microwave
TRANSCRIPT
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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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