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Directory:Wireless Transmission of Electricity

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Wireless energy transfer, also known as wireless energy transmission, is the process that takes place in any system where electromagnetic energy is transmitted from a power source (such as a Tesla coil) to an electrical load, without interconnecting wires. Wireless transmission is employed in cases where interconnecting wires are inconvenient, hazardous, or impossible. Though the physics can be similar (pending on the type of wave used), there is a distinction from electromagnetic transmission for the purpose of transferring information (radio), where the amount of power transmitted is only important when it affects the integrity of the signal.

"Two coils with a matched resonance at the exact matching frequency on both ends = wireless power."


Contents

History

Wireless technology goes back to Tesla's experiments in Colorado in the early 1900s.

When Tesla died, the government took all of his papers and classified them. They did return most of those papers to Tesla's country of birth, but it would appear that the U.S. Government withheld some of those papers to hide certain technology from the public.

Wireless transmission of electricity, Tesla style, would have circumvented the metering of energy, abundantly available. That is why J.P. Morgan took the financing away from Tesla when he was building the Wardenclyffe tower on Long Island to supply wireless power to the world.


  • Magazines > Infinite Energy / Nikola Tesla >
    Infinite Energy: Issue 89: The Electrical Genius of Nikola Tesla - The Fight to Preserve Tesla’s Wardenclyffe • Tesla’s Wireless Energy • Tesla vs. Einstein: Transcending the Speed of Light • Tesla’s Accomplishments in the Niagara Falls Region • Tesla’s Atmospheric Research as Related to Pyramids • Tesla’s Electromagnetic Healing Devices • High Frequency Oscillators for Electro-Therapeutic Purposes • Clean Fusion Energy from Colliding High Density Spheromaks • The Unique Nature of a Room-Temperature Superconductor (Jan/Feb 2010)

Videos

(2.05Minutes) Tesla Coil--Wireless Transmission of Power

  • Collecting all those microwaves, radio waves, tv waves, electromagnetic radiation and brain waves from the atmosphere. (YouTube; October 21, 2007)

Companies

  • Wireless Transmission / EVs > Recharing Stations >
    World’s First Wireless Electric Car Charger Launched In UK - The IPT (Induction Power Transfer) is the world’s first commercially-available wireless electric car charging system, the flagship product of start-up company HaloIPT. The company’s unique charging system has been described as the safest, most efficient and most effective way to transfer power without wires. (Inhabitat; Nov. 2, 2010)
  • Wireless Transmission >
    GM Invests in Wireless Charging Technology - GM announced it is investing $5 million in PowerMat, which uses inductive charging, transmitting electricity via magnets without any actual, physical connection. The PowerMat will be placed on the center console in the front and there will be a mat placed for the rear passengers too. (Gas 2.0; January 6, 2011)
  • Wireless Power Energizes Many Devices - "Wired" at CES 2009, video interview - Utilizing principles of magnetic induction, Powermat pairs an ultra-thin mat with a receiver that connects to your device. The two parts of the Powermat system - mats and receivers - all work together. (Wired; Jan. 9, 2009)

Projects

Research and Development

Intel

  • Intel gets into the wireless electricity game - Intel, the world's largest chip manufacturer, demonstrated a form of wireless energy transfer by lighting a 60-watt bulb from a power source three feet away, in an effect they referred to as WREL (wireless resonant energy link). If the trick sounds familiar, that's because researchers from the Massachusetts Institute of Technology (MIT) reported the same thing last year under the moniker WiTricity. (YouTube)(Thanks Susan) (Scientific American; Aug. 22, 2008)

MIT WiTricity

  • Eric Giler demonstrates wireless electricity at TEDGlobal 2009 - Eric Giler gives a ten-minute demonstration at this year's TEDGlobal show, demonstrating how wireless power seems very close to breaking through into the mainstream market. He wirelessly powers a TV from a distance of 6.5ft, and then proceeds to charge Nokia, Apple and T-Mobile cell phones. (GizMag; August 30, 2009)
  • MIT's Wireless Power - In the spirit of Tesla's dream of wireless power, MIT physicist Marin Soljacic is working on a way to transmit power wirelessly, both efficiently and safely. Now his work has made MIT Technology Review's TR10 list for 2008. (MIT Technology Review; March/April 2008)
  • Electricity in the Air - If cord-free power delivers on its promise, our "wireless" world will finally live up to the name. Ramifications of MIT's work on WiTricity, bringing Tesla's dream to fruition. (Popular Science; Jan. 23)
  • MIT Wirelessly Powers a Lightbulb - A team from MIT has experimentally demonstrated lighting a 60W light bulb from a power source seven feet (more than two meters) away; there was no physical connection between the source and the appliance. The MIT team refers to its concept as “WiTricity" (as in wireless electricity). (PhysOrg; June 7, 2007) (See Slashdot discussion)

Nevada Lightning Lab

  • Pushing 800W of Wireless Power at 5 Meters - Nevada Lightning Lab has proposed a research facility for generating controlled lightning discharges using a matched set of 12-story Tesla Coil towers, with discharges over 300 feet in length, delivering a peak output of over 18 million volts. Located 35 miles outside Las Vegas, Nevada, this facility will support new industrial and scientific research. The 1:12 scale model twin tower prototypes are completed in San Francisco, CA. (Slashdot; Dec. 10, 2008)

Tohoku University's Masahiro Hotta

  • Wireless Power >
    Physicists Discover How to Teleport Energy - First, they teleported photons, then atoms and ions. Now physicist Masahiro Hotta at Tohoku University in Japan has worked out how to do it with energy, a technique that has profound implications for the future of physics. (Technology Review; Feb. 3, 2010)

Other Groups

  • Wireless Transmission of Electricity >
    Wireless power could revolutionize highway transportation - A Stanford University research team has designed a high-efficiency charging system that uses magnetic fields to wirelessly transmit large electric currents between metal coils placed several feet apart. The long-term goal of the research is to develop an all-electric highway that wirelessly charges cars and trucks as they cruise down the road. (Spacemart; February 3, 2012)
  • Wireless Transmission of Electricity / Flight >
    Helicopter Flies 12 Hours Charged By Laser - LaserMotive is a Seattle-based company developing laser power beaming systems to transmit electricity without wires, for applications where wires are either cost prohibitive or physically impractical. (sUAS News; Oct. 29, 2010)
  • Wireless Transmission >
    Bye-Bye Batteries: Radio Waves as a Low-Power Source - Powercast, based in Pittsburgh, sells radio wave transmitters and receivers that use radio waves to power wireless sensors and other devices. The low energy usage of such devices has opened these possibilities. (NY Times; July 18, 2010)
  • Wireless Power >
    Amusement Park Powers EVs Using Electric Toothbrush Technology - Korea’s Advanced Institute of Science and Technology developed an electric vehicle technology that relies entirely on power from cables buried beneath the road. Now the system has been unveiled in its first real-world test location: the Seoul Grand Park amusement park. (Inhabitat; March 9, 2010)
  • Recharging Gadgets Wirelessly - A Delaware-based startup called WildCharge is selling a small metal pad, about the size of a sheet of paper, that can simultaneously charge multiple devices laid on top of it--as long as they're equipped with adaptors. (MIT Technology Review; Dec. 13, 2007)
  • Plastic sheet delivers wireless power - Japanese researchers have developed a flexible plastic sheet that can wirelessly transmit power to electronic devices. Desks and walls could one day light up electronics without need for cables. (Nature; Apr. 29, 2007)
  • Plastic Sheet of Power - Printing flexible electronics on plastic provides a way to wirelessly power gadgets. Researchers at the University of Tokyo have demonstrated a prototype that consists of plastic and flexible electronics, and can wirelessly supply power to any device that touches its surface. (MIT Technology Review; Dec. 14, 2006)
  • Charging Batteries without Wires - New MIT research reveals a way to send wireless energy to mobile phones and laptops using the principle of resonance. (MIT Technology Review; Nov. 15, 2006) (See also BBC)
  • Stray Magnetic Energy Harvesting in Power Lines through Inductive Coupling for Wireless Sensor Nodes - The concept of transferring power from one end to another end is not new as Tesla in the olden days has proven the wireless power transfer concept. Through inductive coupling, the magnetic energy is emitted from the transmitting coil to the receiving coil. Te application of wireless power transfer to sustain or rather to enlongate the lifetime of the wireless sensor node in a network fashion is interesting and feasible. The research work has experimentally proven that by harvesting the stray magnetic energy surrounding the power lines through inductive coupling, the operation of the wireless sensor node is sustained.

Information

Theory

  • Wireless Transmission / Magnet Motors >
    Michal Martinu's Free Energy Page - Some fascinating ideas, animations, links; including building huge solar plants in the equatorial deserts or oceans an transmitting the power via Tesla transmitters. Also has a fascinating proposal for a magnet motor, showing field animations compared to an electric version. (Free-Motor.org)

Related patents

In the News

  • Wireless Transmission of Electricity >
    Wireless power could revolutionize highway transportation - A Stanford University research team has designed a high-efficiency charging system that uses magnetic fields to wirelessly transmit large electric currents between metal coils placed several feet apart. The long-term goal of the research is to develop an all-electric highway that wirelessly charges cars and trucks as they cruise down the road. (Spacemart; February 3, 2012)
  • eCoupled >
    eCoupled Wireless Power-Simplify Your Life! (2 min. video) - By removing the last restraint of the power cord, eCoupled wireless power will finally allow the lifestyle of freedom while saving energy. Working with industry leading partners to bring the technology into your hands, eCoupled is leading the charge towards a true wireless future. (YouTube / FultonInnovation; September 28, 2009)
  • Charging gadgets using a magnet - Magnetic induction could soon spell the end of tangled cables and a frustrating hunt for the gadget's charger. (BBC News; Jan. 9, 2009)

Books

Comments

See Discussion page

See also

TESLA FOOTER

TESLA TECHNOLOGIES

TESLA OPEN SOURCE PROJECTS

COMPANIES DEVELOPING TESLA TECHNOLOGY

TESLA EVENTS

SCAMS

MISC TESLA

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