Loss analysis and improvement of all parts of magnetic resonant wireless power transfer system

In order to make a quantitative analysis of the power loss in wireless power transfer system, a comprehensive analysis of all the losses of a magnetic resonant wireless power transfer system is presented in this paper. The skin effect, proximity effect and high frequency radiation is also taken into account in coils whose internal AC resistance and high frequency radiation resistance are presented. And the equivalent circuits and resistance calculation formulas of the system are proposed. The resistance and the loss of each part was measured, and the model is validated by experimental result.