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Related: About this forumWireless charging of moving electric vehicles overcomes major hurdle in new Stanford research
http://news.stanford.edu/2017/06/14/big-advance-wireless-charging-moving-electric-cars/[font face=Serif]June 14, 2017
[font size=5]Wireless charging of moving electric vehicles overcomes major hurdle in new Stanford research[/font]
[font size=4]Stanford scientists have developed a way to wirelessly deliver electricity to moving objects, technology that could one day charge electric vehicles and personal devices like medical implants and cell phones.[/font]
By Mark Golden and Mark Shwartz
[font size=3]If electric cars could recharge while driving down a highway, it would virtually eliminate concerns about their range and lower their cost, perhaps making electricity the standard fuel for vehicles.
Now Stanford University scientists have overcome a major hurdle to such a future by wirelessly transmitting electricity to a nearby moving object. Their results are published in the June 15 edition of Nature.
To address the challenge, the Stanford team eliminated the radio-frequency source in the transmitter and replaced it with a commercially available voltage amplifier and feedback resistor. This system automatically figures out the right frequency for different distances without the need for human interference.
Adding the amplifier and resistor allows power to be very efficiently transferred across most of the three-foot range and despite the changing orientation of the receiving coil, said graduate student Sid Assawaworrarit, the studys lead author. This eliminates the need for automatic and continuous tuning of any aspect of the circuits.
[/font][/font]
[font size=5]Wireless charging of moving electric vehicles overcomes major hurdle in new Stanford research[/font]
[font size=4]Stanford scientists have developed a way to wirelessly deliver electricity to moving objects, technology that could one day charge electric vehicles and personal devices like medical implants and cell phones.[/font]
By Mark Golden and Mark Shwartz
[font size=3]If electric cars could recharge while driving down a highway, it would virtually eliminate concerns about their range and lower their cost, perhaps making electricity the standard fuel for vehicles.
Now Stanford University scientists have overcome a major hurdle to such a future by wirelessly transmitting electricity to a nearby moving object. Their results are published in the June 15 edition of Nature.
To address the challenge, the Stanford team eliminated the radio-frequency source in the transmitter and replaced it with a commercially available voltage amplifier and feedback resistor. This system automatically figures out the right frequency for different distances without the need for human interference.
Adding the amplifier and resistor allows power to be very efficiently transferred across most of the three-foot range and despite the changing orientation of the receiving coil, said graduate student Sid Assawaworrarit, the studys lead author. This eliminates the need for automatic and continuous tuning of any aspect of the circuits.
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Wireless charging of moving electric vehicles overcomes major hurdle in new Stanford research (Original Post)
OKIsItJustMe
Jun 2017
OP
Why didn't they address the distance issue? That seems to be the exact point with automobiles.
brush
Jun 2017
#3
Thanks for this other video. It addresses the distance issue which the one in the OP doesn't.
brush
Jun 2017
#5
Heinlein had a character, Waldo, from whom we get the name of remote manipulators
OKIsItJustMe
Jun 2017
#8
Girard442
(6,082 posts)1. Somewhere, Nikola Tesla is smiling.
OKIsItJustMe
(19,938 posts)2. Well, Tesla wanted much greater distances
brush
(53,815 posts)3. Why didn't they address the distance issue? That seems to be the exact point with automobiles.
Guess that's the next step to work on. Wish he had said something about it in the video.
OKIsItJustMe
(19,938 posts)4. Well, they do address the distance issue, just not the one you want
brush
(53,815 posts)5. Thanks for this other video. It addresses the distance issue which the one in the OP doesn't.
eppur_se_muova
(36,280 posts)6. Mmmmm great. Keep those pacemakers away.
I, for one, do not look forward to seeing the atmosphere around me saturated with RF energy.
Tesla's experiments produced such strong fields that any conductor in the vicinity produced sparks, and watches were irreparably damaged. NOT compatible with today's solid-state/digital technology.
OKIsItJustMe
(19,938 posts)8. Heinlein had a character, Waldo, from whom we get the name of remote manipulators
(Waldo invented them.)
In any case, Waldo proves that the radiant power industry is having a negative effect on human health. I frequently think of Waldo
hunter
(38,322 posts)7. How's that solar sidewalk working out?
https://www.democraticunderground.com/1127111026
A wireless electric roadway is one of those ideas that doesn't make any sense, especially in a society that has trouble maintaining ordinary transportation infrastructure like bridges and pavement surfaces.
How do you keep fancy electronics alive in an environment like this:
Notice the new-asphalt-over-bad patch at the bottom of the photo, a repair that probably didn't last the winter because the road bed underneath wasn't built to take the pounding it gets. Digging it all up and rebuilding it to survive modern traffic simply isn't in the budget.
KISS (Keep it Simple Stupid) is a very sound engineering principle.
Unlimited overland long distance electric transportation systems already exist, since the later 19th century. The St. Charles Streetcar Line in New Orleans was electrified in 1893. The Japanese Shinkansen "bullet trains" have been running since the 'sixties.
A wireless electric roadway is one of those ideas that doesn't make any sense, especially in a society that has trouble maintaining ordinary transportation infrastructure like bridges and pavement surfaces.
How do you keep fancy electronics alive in an environment like this:
Notice the new-asphalt-over-bad patch at the bottom of the photo, a repair that probably didn't last the winter because the road bed underneath wasn't built to take the pounding it gets. Digging it all up and rebuilding it to survive modern traffic simply isn't in the budget.
KISS (Keep it Simple Stupid) is a very sound engineering principle.
Unlimited overland long distance electric transportation systems already exist, since the later 19th century. The St. Charles Streetcar Line in New Orleans was electrified in 1893. The Japanese Shinkansen "bullet trains" have been running since the 'sixties.