A Generalized Method of Determining Coil and Compensation Circuit Parameters of Basic WPT Topologies

Usually, wireless power transfer (WPT) technology is used to recharge the battery of a mobile system. Typically, the known parameters for a WPT system are the source voltage, output voltage, and power level. The problem is selecting a suitable WPT circuit topology and finding the exact coil parameters. This paper presents a generalized method to find the coil and compensation element parameters for all the four basic WPT topologies. This study also considers that a current source inverter (CSI) is necessary when the primary side is parallel compensated, whereas for the series compensated primary network, a voltage source inverter (VSI) is required. All the analytical results have been verified with the simulation performed in PowerSIM.