MikeD said:This may not be completely new, but may still be of some interest
http://news.stanford.edu/news/2012/february/wireless-vehicle-charge-020112.html" onclick="window.open(this.href);return false;
Sorry, OT.tps said:I can see something like this along a toll road such as the PA Turnpike, which would have the money (had the state legislature not siphoned them away) to fund such a project.
Using mathematical simulations, postdoctoral scholars Xiaofang Yu and Sunil Sandhu found the answer: A coil bent at a 90-degree angle and attached to a metal plate can transfer 10 kilowatts of electrical energy to an identical coil 6.5 feet away.
"That's fast enough to maintain a constant speed," Fan said. "To actually charge the car battery would require arrays of coils embedded in the road. This wireless transfer scheme has an efficiency of 97 percent."
And at 97% efficiency, that would only be 300 watts of leakage. Just think how the folks that worry about milliwatts of cellphone energy or high tension power lines would feel about a hundred or more watts of spare RF running around right under their feet.Herm said:10kW wont do much, perhaps a 55mph steady cruise..
Uh yeah. A spare 300 watts of heat energy dissipated into a human body should mean at least you won't need a seat heater. I'll grant that most of the leakage energy would probably go into heating the coil, but still... And the article even includes a rousing endorsement of:Although a power transfer efficiency of 97 percent is extremely high, Beiker and his colleagues want to be sure that the remaining 3 percent is lost as heat and not as potentially harmful radiation.
Oooo! Pick me to be the study candidate for 8 hours a day, 5 days a week testing! There's no apparent impact on people in a brief period of testing a 60 watt bulb, Q.E.D. it's absolutely safe."In the MIT experiment, the magnetic field appeared to have no impact on people who stood between the coils," Fan said. "That's very important in terms of safety. "
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