Study of Wireless Power Transfer Using Series-Parallel Topology

This paper presents Series-Parallel Topology (SP) of magnetic coupling system for use in Wireless Power Transfer (WPT) applications. Configuration of the system is composed of rectifier circuit, inverter circuit and resonance circuit. Full bridge inverter circuit is powered by rectifier and its output is connected to the LC series resonant circuit. Moreover, the LC parallel circuit with resistance is serve as load of the topology. Electric equivalent circuit model is use to describe PS which yields reflected voltage, primary and secondary current and impedance of the system. The theory of the system is verified using an experimental set-up connected to a circular primary coil and secondary coil. Various experiments are conducted for difference distance, arrangement, frequency, angle, and diameter. The analysis compares the efficiency of SP topology and its results are reported.