Design and Simulation of Wireless Power Transfer System for Biomedical Implant

Abstract

Analytical and simulation approach is explored for link design and performance evaluation for wireless power transfer system. Electrical parameters are extracted from geometrical parameters of a primary and secondary coil and two port network model has been considered for link design and performance evaluation. Magnetic resonant coupling using SP configuration has been selected for longer distance in MHz frequency range. The software tools are used for evaluation of complex analytical design equation and to facilitate the design process.FEM based simulation tool is being used to compare the analytical result.Square PCB type geometrical shape is selected for analysis and evaluation. The power transfer efficiency up to 78% at 4 MHz for the distance of 33mm using SP resonant topology is achieved. Maximum distance and frequency range are the shortcomings to design WPT for biomedical implant.