Comprehensive Analysis of Various Coil Geometries in Single Transmitter and Multi-Receiver Wireless Power Transmission

Abstract

This article introduces a Wireless Power Transfer (WPT) system designed for powering multiple electronic loads using single transmitter and multiple receivers. Article presents an in-depth analysis of various receiver coil geometries such as circular, square, hexagonal, and octagonal types. To identify the most efficient coil design for the WPT system, Finite Element Analysis (FEA) method using ANSYS MAXWELL simulation tool is used. For comparison, parameters such as self-inductance, mutual inductance, and the coefficient of coupling are considered, the equivalent circuit model is employed to calculate essential electrical parameters. The simulation for the proposed model is simulated using the LT-Spice simulation tool. The system is operated at the 85 kHz resonant frequency and inductor-capacitor-capacitor (LCC) compensation topology is used to optimize the coupling factor and attain varying power capabilities at different loads. This comprehensive approach is used to integrates the theoretical, simulation and practical considerations to propose an effective WPT system to deliver a power to multiple electronic loads.