Effect of metal plate on position error tolerance in wireless power transfer

Wireless power transmission techniques have been attracting attention in recent years. In the practical application, however, several problems are still remaining. Especially, the effects of metals around coils are not evaluated enough. In this paper, the effect of metals around the coils on position error tolerance has been investigated. As results of the analysis, it is clarified that the position error tolerance can be improved by attaching the metal cover to the coil.