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The efficiency of
wireless electric power transmission is generally low; however, a new method
has been proposed by a research group at MIT.
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The new method has
achieved a high transmission efficiency of 90% or more. As a result, a number of research
groups are currently examining wireless power transfer technology.
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Although the
resonance method can provide highly effective transmission compared with
previous methods, the efficiency can deteriorate sharply if the position of
the transmission coil shifts.
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Therefore, it is
difficult to effectively transmit electric power to a running vehicle using
this method.
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Moreover,
individuals and telecommunications equipment in the immediate vicinity of a
running car are adversely affected by the energy transmission.
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