Published on March 2, 2014
PRESENTATION ON “Microwave” A Next Generation Power Transmission System PRESENTED BY Shivani Kumbhalkar Maitreye Jha (3rd year BE ) Department Of Electronics & Communication Engineering G. H. RAISONI ACADEMY OF ENGINEERING & TECHNOLOGY NAGPUR Session 2012-13 1
Outline • • • • • • • • • • • Introduction Why WPT is required? Inventor of WPT Wireless power transmission system Advantages Disadvantages Applications Biological impact References 2
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. 3
WHY WPT IS REQUIRED? • 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. • 4
NIKOLA TESLA(Inventor of WPT) • 1856-1943 • • Innovations: – Wireless power transmission experiments at Wardenclyffe • • Concept of WPT is depends on electrical conductivity • 5
WIRELESS POWER TRANSMISSION SYSTEM • 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. 6
FUNCTIONAL BLOCK DIAGRAM OF WIRELESS POWER TRANSMISSION SYSTEM Transmitting Antenna Microwave Power Source Load CoaxWaveguide Adaptor CoaxWaveguide Adaptor Waveguide Circulator Tuner & Directional Coupler Impedance Matching & Filter Ckt. Schottky Barrier Diode Microwave on Free Space Receiving Antenna 7
ADVANTAGES OVER A WIRED TRANSMISSION SYSTEM. •WPT system would completely eliminates the existing hightension 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. 8
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. • 9
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. • • • 10
APPLICATIONS •Wireless Power Source. •Wireless sensors • Wireless power technology. •Electric toothbrush. •Use of fuel replaced by Electrical Power 11
Power Can Be Generated By Solar Power Satellite(sps). 12
Wireless power transmission & reception using microwaves 13
LONG DISTANCE WIRELESS POWER TRANSMISSION • Carried 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. • • 14
FUEL FREE ELECTRIC BUS Trolley Powered With Wireless Power Transmission 15
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). • 16
Thank You Thank You 17
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