The Research And Design For Wpt System Based On ICPT Topology

There have two topologies to implement the WPT which is magnetic resonance topology and Inductively Coupled Power Transfer(ICPT)topology.This paper,based on the high power background,will focus on the ICPT topology.As an example for SS compensation ICPT circuit,The circuit has been analyzed detailed.The two equivalent circuits has been given.The system model in this paper has been built based on ICPT circuit,and the output current characteristic and voltage gain characteristic have been got.Beaed on the characteristics,two operating modal is defined.At the same time,the best work space of the two operating modal has been found.Then the characteristic of output power and efficiency has been analyzed.According to the modal of system.Some problems of the ICPT topology have been found.For the problem,three system optimized method has been proposed.According to the three optimized method,three circuit design method which are used in different scene has been proposed.A 500W WPT system has been built to use as an experiment platform.It includes a PFC circuit,Buck circuit,and a inverter circuit.In the system the synchronous rectification technology has been used to improve the system efficiency.At the end,through simulation,theoretical calculation,experiment,the theoretical analyze has been demonstrated.The 500W system can work stable and the efficiency has been reached 88%.All of the indexes has been reached to the request of the design.