Stanford researchers have designed a new technology that could lead to wireless charging of electric vehicles while they cruise down the highway. This wireless transfer scheme has an efficiency of 97 percent. The transfer range is one fifteenth of the wavelength. The range is 2 meters for a 10 megahertz system. The transfer efficiency can be further increased by fine tuning the system design increasing the size of the metallic plane will result in a slightly higher transfer efficiency.
A Stanford University research team has designed a high-efficiency charging system that uses magnetic fields to wirelessly transmit large electric currents between metal coils placed several feet apart. The long-term goal of the research is to develop an all-electric highway that wirelessly charges cars and trucks as they cruise down the road.The new technology has the potential to dramatically increase the driving range of electric vehicles and eventually transform highway travel, according to the researchers.
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