A Simulation-Driven Exploration of Coil Design and WPT System Integration Strategies for High Quality Factor and Reduced Power Reflections

Abstract

Wireless power transfer (WPT) systems have been widely used in autonomous mobile robots. However, the performance of the WPT system is limited due to the low efficiency of the transfer. This research aims to explore the impact of coil design on performance, demonstrating promising improvements in power transfer efficiency and range. Specifically, this research uses high-frequency electrical stimulation to reduce signal reflections in the WPT system. The proposed system, simulated with its three variations and results, shows a significant reduction in signal reflection over a long range compared to previous literature. Furthermore, a derived equation to optimize coil turns improves the quality factor. The results of the proposed system show that using a double-layer coil with intermediate coils is a reliable and effective way to transfer power wirelessly over a long range.