Mmmm, so are they using magnetic or electrostatic coupling? I shudder at either possibility.
Japanese boffins demo EV on-the-move charging
Electric vehicles have two problems: to make them “zero emission”, they need to be recharged from “clean” sources; and range remains a challenge. A Japanese proposal would, if it worked, address the second – but probably exacerbate the first. A team from the Toyohashi University of Technology has demonstrated an electric field …
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Monday 9th July 2012 01:20 GMT stucs201
Trains and Trams
Haven't trains and trams already solved the power delivery to a moving vehicle problem? True it'd be impractical to have overhead wires everywhere, but just doing motorways wouldn't be as big a job as doing every road, and should be in the right place for most journeys where range is an issue.
Its going to mean ugly cars unless it folds away though.
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Monday 9th July 2012 01:33 GMT honkhonk34
Re: Trains and Trams
Trains are constrained on tracks and weigh a hell of a lot - having a minimal contact point on the top of a train doesn't pose much in terms of danger because the contact doesn't provide much friction and trains have a pretty uniform upper height.
How do you fit in an above-road electrical system which can accommodate a mini as well as a 12 tonne truck? The height above the road the electrical cables would have to be would make it difficult to fit a system large enough atop a mini, for example.
It makes more sense to me to have electrified rails on the ground (as stupidly dangerous as that probably is) because all motor vehicles touch the ground with a much smaller difference in the distance between the undercarriage and ground. a deployable arm that slaps down a feeder on an electrical rail seems much more practical and deployable to me, but then I'm not an engineer...
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Monday 9th July 2012 01:41 GMT Charles 9
Re: Trains and Trams
Given that streets are also where kids play and where pedestrians crisscross, a ground-based third rail is a non-starter. Plus roads can have multiple lanes; trains usually travel on single sets of rails.
At least the researchers are honest and point out: yeah, we can do it, but it isn't nearly practical at this time.
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Monday 9th July 2012 06:33 GMT Dazed and Confused
Re: Don't see this going anywhere.
You could solve the range problem for internal combustion engines too. You could follow this methodology and have re-fuel while driving systems. Steam engines used to do this. Just imagine in the middle of motorway lanes you could have mile long troughs full of petrol (diesel in the loser lane obviously) and when your gauge get low, you just lower a scoop and re-fill the tank.
No problems
Wouldn't solve the parallel range problem of the Mrs' bladder capacity.
Just remember to keep the health and safety crowd away :-)
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Tuesday 10th July 2012 08:16 GMT Dazed and Confused
Re: "loser lane"
I suggest that you try and find yourself a link to Michael McIntyre's interview on Top Gear, a reportedly humours TV program with a mild interest in motoring, and see whether you are in possession of a sense of humour.
I was actually trolling for those who've realised that diesel's aren't any longer slower vehicles, but I seem to have caught the wrong sort of troll.
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Monday 9th July 2012 05:37 GMT Jim Lewis
Even if they solve the problem, can you imagine the temptation for hoodlums, (as well as unintended accidents), to put ANY conducting material in the vicinity of a 5kW delivering system.
Just watch the ensuing mayhem as the material melts/explodes ruining the system and probably a significant part of the roadway in the process.
Power lines are that high for a reason!
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Monday 9th July 2012 15:49 GMT Anonymous Coward
Control system?
It can be seen that there are several potential approaches to proving some sort of safety/security system so that it is only energised when necessary. Such a thing would probably also be quite useful for billing purposes, as I imagine the energy suppliers would be quite keen on that.
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Monday 9th July 2012 06:49 GMT Khaptain
MAGLEV
Can't we have a Maglev system please. I love the idea of going to work in a landspeeder, it's a lot more enticing than public transport.
PS : For the pedants , I know that Landspeeders don't use Maglev but it is about the closest thing that I could find.
PPS : For the ultra-pedants : Yes, I know Landspeeders don't exist.
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Monday 9th July 2012 06:54 GMT Anonymous Coward
Linear Motors
Just fit a line of carefully timed, pulsed electro magnets to a special paid lane on the motorway. Get in lane stick the car in neutral (or whatever the electric equivalent is) cruise to destination using minimal charge / fuel. And with the same linear motor driving everyone, there'll be no-one going too slow and blocking the lane.
Getting out of the lane may be a small issue though.
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Monday 9th July 2012 07:22 GMT horsham_sparky
efficiency
The article derides the 80% efficiency as being too low to be practical.. the reality is that this is actually pretty good for a wireless system.Even with a wired system, you would be doing well to get 90% efficiency out of it. Less if you count the losses through the battery and charger (assuming the wireless system power is used dynamically rather than stored)
That said, yes its still more practical to recharge at stations.. the cost of implementing this on just motorways would be astronomical (anyone seen the price of copper cable these days?)
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Monday 9th July 2012 08:13 GMT mark 63
me n my car weigh 1500kg
If this is all in the name of environmentalism , systainabilty , global warming, clean energy ...
then The whole "car" concept needs to go. people need to move on trains or buses , or conveyor belts - or just work out where the hell they want to be!
In the future the idea that when millions of people commuted miles to work , they increased their ground footprint by 100 times , and their mass from 70kg to upwards of 1500kg - by getting in a car will laughable
we dont have the available energy or space to carry on like this
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Monday 9th July 2012 08:28 GMT Khaptain
Re: me n my car weigh 1500kg
"- or just work out where the hell they want to be!"
I definately agree with what is stated above and just to add a litlle
Why the hell do we "need" to travel so much in the first place? There was a time when 20Kms was a long journey and today we are literally travelling 10s of thousands of kms per year. Is it all really necassary ?
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Monday 9th July 2012 09:59 GMT Anonymous Coward
Re: me n my car weigh 1500kg
Trains are all well and good if they go where you want.
To go to a neighbouring town for me is a 1 hour train journey, in car, about 10 mins.
To get to work by train, 1.5 hours (at best), so 3 hour round trip.
if I left at the same time in the car. about 20 mins in, about 40 min out., so 1 hour round trip.
So over my life, I could be looking at several thousand hours stuck on the train when I could be doing important things, like seeing my family, and enjoying life.
As for bus, well, I may see my kids at the weekend, if I'm back by then.
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Monday 9th July 2012 11:24 GMT James Micallef
Re: me n my car weigh 1500kg
To all the above replies, sure, some facilities are no longer available locally and some travel is necessary. However I agree with the original poster's point of - why do I need a vehicle weighing 1500-2000 kg to transport 1 person + briefcase, which is the vast majority of commuter trips?
There are smarter ways to travel to optimise both efficiency and speed. Even if public transport isn't delivering you right to your destination, in a car you have more traffic, parking problems etc. Cars are great for suburban + long-distance travel, they really suck in busy urban neighborhoods, a clever system will make use of a combination: park + ride, + extended use of bicycles / scooters / segway-type vehicles in 'bicycle' lanes.
However: under-raod charging??? OK cables are buried so no danger, and 80% transmission is pretty good, but are these guys proposing to dig up a huge proportion of millions of km of road worldwide, underlay with presumably very expensive metal and redo the road surface again??? It's insane, considering that fast-charging + swappable battery packs can be made practical for much less investment in infrastructure
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Monday 9th July 2012 08:30 GMT Some Beggar
They're thinking about this all wrong.
What you need is an insulated rod sticking out of the floorpan with a metal brush contact on each side. Then cut a slot into the middle of each lane of the motorway and lay metal tracks along either side of it. Wire these tracks in pairs to a high current DC supply. Lane changing can be facilitated by randomly placing slot crossovers - ideally just after a long, fast corner or humpback bridge. As an added bonus, traffic police can adjust the maximum speed on the road by using a handheld variable resistor wired into the DC supply.