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Wireless solar charging for electric buses?

By | February 20, 2012, 4:20 PM PST

While electric vehicles are still a small portion of the auto market in most countries, many cities have been looking to integrate electric vehicles into their public transit networks. London recently unveiled a hybrid version of its double-decker Routemaster bus.

But, as the Routemaster discovered in its first few days on the road, battery life is a severe constraint on electric public transit vehicles, which normally need to interrupt their routes to recharge.

Enter the ATC Solar Curve Bus Stop concept. Developed by Studio Mango for the city of Noord-Brabant, in the Netherlands, the system would install inductive charging technology at existing bus stops, enabling electric buses to recharge each time they stop to pick up passengers.

The developers would install around 15.5 meters of solar panels on top of the bus stop’s roof, which would convert sunlight to solar power throughout the day. The curved roof would both protect passengers from the elements and tilt down to enable wireless energy transfer to buses as they pulled up under the overhang. This energy transfer would occur using inductive charging, which employs an electromagnetic field to transfer energy between two objects.

Once the charging was completed, green LED lights at the bus stop would alert the driver to continue on his/her way.

No word on when the concept might be implemented, but this could prove to be an effective solution to our electric-bus-charging woes.

Photos: Studio Mango

via [EarthTechling]

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Channtal Fleischfresser

About Channtal Fleischfresser

Channtal Fleischfresser is a contributing editor for SmartPlanet.

Channtal Fleischfresser

Channtal Fleischfresser

Contributing Editor

Channtal Fleischfresser has worked for The Economist, WNET/Channel 13, Al Jazeera English, Wall Street Journal and Associated Press. She holds degrees from the University of Pennsylvania and the Columbia University Graduate School of Journalism. She is based in New York.

Follow her on Twitter.

Channtal Fleischfresser

Channtal Fleischfresser

Channtal does not have financial holdings that would influence how or what she covers.

She writes for SmartPlanet and is not an employee of CBS.

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+1 Vote
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Wow
That's actually a good-looking (and hopefully effective) design. It's economical in size and again hopefully, in cost. Imagine a fleet of electric buses replacing the gas guzzlers that shuttle people around. We can save massive amounts of oil and we make a huge impact on the environment.

Juan Miguel Ruiz
http://www.GreenJoyment.com
Posted by Green Joy
21st Feb 2012
+1 Vote
+ -
Only 1 problem no one has found a work around for.
The strength of the charging signal required for an overhead charger in this setup will be strong enough and close enough to interfere with passengers pacemakers. The shielding required adds too much to the weight of the vehicle.

Ground mounted wireless chargers are actually more dangerous than an electrified third rail.
Posted by Hates Idiots
21st Feb 2012
+1 Vote
+ -
Why inductive?
I see nothing wrong with having a plug of direct connection. Such things would need
to be locked down to prevent vandalism, but so will the inductive systems. The
shelters would need to be attached to the main grid and the solar power collected would be used to offset the power consumed.

As an alternative, you could have a power pack swap of some kind.
The side or bottom of the bus is opened, the pack removed, a fully charged one
inserted, and you are off. Packs would only swap when the one in the charger
has sufficiently more juice than the one on the bus. A well timed system could
easily swap out the packs in well under a minute if not a fraction thereof.
Posted by richard233
21st Feb 2012
+1 Vote
+ -
Good idea.
Why not a plug? They could do this same setup with an automated umbilical cord going into a roof top charging port like in flight refueling for planes, but reversed.

Sensors could guide general alignment and a simple funnel like design could slid the plug into place. A modified NATO standard charging adaptor used by the military, or something comparable, would work.
Posted by Hates Idiots
21st Feb 2012
+1 Vote
+ -
Less numerous
Battery packs make sense because of the extended lack of sunlight issue. They can be swapped out at far fewer intervals than at every stop, probably at the beginning point of a route. A minimum number of places to swap battery packs also translates to a choice of machines or people to do the work rather than being forced to use machines. There can still be solar panels on the shelter roofs, but they will feed power into the municipal grid rather than be an isolated system.
Posted by hoodedswan
21st Feb 2012
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