Evaluation of Inductive Contactless Power Transfer Outlet with Coaxial Coreless Transformer

Abstract

A contactless outlet for dc distribution systems was proposed. It uses an inductive contactless power transfer circuit with a Series/Parallel (S/P) compensation circuit to prevent voltage fluctuation. However, the output voltage of the circuit rises in light load conditions. In this paper, the main circuit and control method for reducing the rise in output voltage and a method to estimate the output voltage are presented. The proposed circuit and methods were verified and evaluated experimentally using feedback control.