Design of multilayer flat spiral inductive coil for wireless power transfer

Abstract

A wireless power transfer system using multilayer flat spiral coils is constructed in this paper. The multilayer flat spiral coil can deliver power highly efficiently, being used in the resonator coupling WPT system. Thus, three structures of inductive coil are displayed in order to compare the benefits of the multilayer flat spiral coil. The second part describes three structures of the coils and the basic system. Moreover, the system with these pairs of coils is simulated by the MAXWELL and SIMPLORER. And the results show the advantages of the multilayer flat spiral coil directly which can bring high transfer efficiency and stable transfer.