Wireless energy transfer

Publicado: maio 25, 2009 por Yogi em Capital, Math, Nature, Science, Tech, Tudo
Tags:, , , , , ,

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  • 1820: André-Marie Ampère describes Ampere’s law showing that electric current produces a magnetic field
  • 1831: Michael Faraday describes Faraday’s law of induction, an important basic law of electromagnetism
  • 1864James Clerk Maxwell synthesizes the previous observations, experiments and equations of electricity, magnetism and optics into a consistent theory, andmathematically models the behavior of electromagnetic radiation.
  • 1888Heinrich Rudolf Hertz confirms the existence of electromagnetic radiation. Hertz’s “apparatus for generating electromagnetic waves” is generally acknowledged as the first radio transmitter.
  • 1891Nikola Tesla improves on Hertz’s primitive radio-frequency power supply in U.S. Patent No. 454,622, “System of Electric Lighting.”
  • 1893: Nikola Tesla demonstrates the illumination of phosphorescent bulbs wirelessly (without any wires connected to the bulbs) at the World’s Columbian Exposition inChicago.[citation needed]
  • 1894: Hutin & LeBlanc, espouse long held view that inductive energy transfer should be possible, they file a U.S. Patent describing a system for power transfer at 3 kHz
  • 1894: Nikola Tesla wirelessly lights up vacuum tubes at the 35 South Fifth Avenue and 46 E. Houston Street laboratory in New York by means of the electrodynamic resonance effects[citation needed]
  • 1894Jagdish Chandra Bose ignites gunpowder and rings a bell at a distance using electromagnetic waves, showing that communication signals can be sent without using wires.[3][4]
  • 1895: Jagdish Chandra Bose transmits signals over a distance of nearly a mile.[3][4]
  • 1897Guglielmo Marconi uses Hertz’s radio transmitter to transmit Morse code signals over a distance of about 6 km.
  • 1897: Nikola Tesla files the first of his patent applications dealing with Wardenclyffe tower.
  • 1899: It is claimed in Prodigal Genius that Nikola Tesla illuminated 200 bulbs wirelessly (without any wires connected to the bulbs) at a distance of 26 miles while working atPikes PeakColorado Springs. No documentation from Tesla’s records has been found that would confirm this actually happened. The first commercial transmission of AC occurred in 1896 over wires at a distance of 26 miles, which may be the source of this rumor.[5][6]
  • 1900: Guglielmo Marconi fails to get a patent for radio in the United States.
  • 1901: Guglielmo Marconi first transmits and receives signals across the Atlantic Ocean using Nikola Tesla’s wireless energy transmitter.
  • 1904: At the St. Louis World’s Fair, a prize is offered for a successful attempt to drive a 0.1 horsepower (75 W) air-ship motor by energy transmitted through space at a distance of least 100 feet (30 m).[7]
  • 1926Shintaro Uda and Hidetsugu Yagi publishes their first paper on Uda’s “tuned high-gain directional array”[8] better known as the Yagi antenna.
  • 1961William C. Brown publishes article that explores possibilities of microwave power transmission. [9][10]
  • 1964: William C. Brown demonstrated on CBS News with Walter Cronkite a microwave-powered model helicopter that received all the power needed for flight from a microwave beam. Between 1969 and 1975 Brown was technical director of a JPL Raytheon program that beamed 30 kW over a distance of 1 mile at 84% efficiency.
  • 1968Peter Glaser proposes wirelessly transferring Solar energy captured in Space using “Powerbeaming” technology [11][12].
  • 1971: Prof. Don Otto develops a small trolley powered by Inductive Power Transfer at The University of Auckland, in New Zealand.
  • 1973: World first passive RFID demonstrated at Los-Alamos National Lab. [13]
  • 1975Goldstone Deep Space Communications Complex does experiments in the tens of kilowatts. [14][15][16]
  • 1988: A power electronics group led by Prof. John Boys at The University of Auckland in New Zealand, develops an inverter using novel engineering materials and power electronics and conclude that inductive power transmission should be achievable. A first prototype for a contact-less power supply is built. Auckland Uniservices, the commercial company of The University of Auckland, Patents the Technology.
  • 1989: Daifuku, a Japanese company, engages Auckland Uniservices Ltd to develop the technology for car assembly plants and materials handling providing challenging technical requirements including multiplicity of vehicles
  • 1990: Prof. John Boys team develops novel technology enabling multiple vehicles to run on the same inductive power loop and provide independent control of each vehicle. Auckland UniServices Patents the technology.
  • 1996: Auckland Uniservices develops an Electric Bus power system using Inductive Power Transfer to charge(30-60kW) opportunistically commencing implementation in New Zealand. Prof John Boys Team commission 1st commercial IPT Bus in the world at Whakarewarewa, in New Zealand.
  • 2004: Inductive Power Transfer used by 90 per cent of the US$1 billion clean room industry for materials handling equipment in semiconductor, LCD and plasma screen manufacture.
  • 2005: Prof Boys’ team at The University of Auckland, refines 3-phase IPT Highway and pick-up systems allowing transfer of power to moving vehicles in the lab
  • 2007: A physics research group, led by Prof. Marin Soljacic, at MIT confirm the earlier(1980’s) work of Prof. John Boys by wireless powering of a 60W light bulb with 40% efficiency at a 2m (7ft) distance using two 60 cm-diameter coils.
  • 2008: Bombardier offers new wireless transmission product PRIMOVE, a power system for use on trams and light-rail vehicles.[17]
  • 2008: Industrial designer Thanh Tran, at Brunel University made a wireless light bulb powered by a high efficiency 3W LED.
  • 2008Intel reproduces Nikola Tesla’s 1894 implementation and Prof. John Boys group’s 1988’s experiments by wirelessly powering a light bulb with 75% efficiency.[18]
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