04 Feb '12, 9pm

Coming Soon: A Wireless EV Highway Charging System?

Coming Soon: A Wireless EV Highway Charging System?

Stanford University researchers this week announced they have designed a road-based, high-efficiency wireless charging system for electric vehicles. In theory, the system could help create a network of all-electric highways that charge electric cars and trucks while they drive, reduce the need for point-specific charging infrastructure, and eliminate range anxiety. The power transfer system is based on a technology called magnetic resonance coupling. This technology creates a magnetic field between the road and vehicle to transfer electric currents to the vehicle’s battery. Copper coils, placed under the road surface at regular intervals, are tuned to resonate at the same frequency. When an electric current is introduced, it creates a magnetic field between the coils that can then transfer energy to a receiving coil in passing electric vehicles. Can it work? While the theo...

Full article: http://cleantechnica.com/2012/02/04/coming-soon-a-wireles...

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