Design methodology of a 500 W wireless power transfer converter

For designing a wireless power transfer (WPT) converter with high power transfer efficiency, the design methodology of adequate input voltage and magnetizing inductance to regulate reactive power is suggested. In addition, as increasing the magnetizing inductance, the turn number of the WPT coil increases, and it induces high parasitic resistance in the coil. Since the higher resistance makes the higher conduction loss, the analysis of the conduction loss is used in the design of the WPT coil and the operating point of the WPT converter. To verify the proposed design methodology, the mathematical analysis of the conduction loss is presented with experimental results.